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Stratigraphic, structural, and tectonic setting of an Upper Devonian-Mississippian volcanic-sedimentary… Mortensen, James Kenneth 1979

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STRATIGRAPHIC, STRUCTURAL, AND TECTONIC SETTING OF AN UPPER DEVONIAM-MISSISSIPPIAN VOLCANIC-SEDIMENTARY SEQUENCE AND ASSOCIATED BASE METAL DEPOSITS IN THE PELLY MOUNTAINS, SOUTHEASTERN YUKON TERRITORY by JAMES KENNETH MORTENSEN B.A.Sc, University of Brit ish Columbia, 1977 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE STUDIES Department of Geological Sciences We accept this thesis as conforming to the required standard THE UNIVERSITY OF BRITISH COLUMBIA December, 1979 © James K. Mortensen, 1979 In presenting th i s thes is in pa r t i a l fu l f i lment of the requirements for the L ibrary sha l l make it f ree ly ava i l ab le for reference and study. I fur ther agree that permission for extensive copying of th is thesis for scho lar ly purposes may be granted by the Head of my Department or by his representat ives. It is understood that copying or pub l i ca t ion of th is thes is for f inanc ia l gain sha l l not be allowed without my writ ten permission. an advanced degree at the Univers i ty of B r i t i s h Columbia, I agree that Department The Univers i ty of B r i t i s h Columbia 2075 Wesbrook P l a c e V a n c o u v e r , Canada V6T 1W5 Date - 11 -STRATI GRAPHIC, STRUCTURAL, AND TECTONIC SETTING OF AN UPPER DEVONIAN-MISSISSIPPIAN VOLCANIC-SEDIMENTARY SEQUENCE AND ASSOCIATED BASE METAL DEPOSITS IN THE PELLY MOUNTAINS, SOUTHEASTERN YUKON TERRITORY ABSTRACT The central Pelly Mountains in southeastern Yukon Territory consist of imbricate thrust sheets, which have undergone syn- and post-thrusting deformation and metamorphism. The local geology is further complicated by intrusion of Upper Cretaceous batholiths, and by s t r ike - s l ip faulting related to the Tintina Fault, a major northwest-trending transcurrent fault of uppermost Cretaceous or early Tertiary age. This faulting dis-rupts the northeast edge of the study area. Upper Devonian and Mississippian strata are present in at least two of the thrust sheets, but the Mississippian volcanic rocks occur in only one of them. The volcanic rocks consist of volcaniclastic material with minor interbedded flows, and were deposited in a sub-marine environment. Several coeval and cogenetic syenite and trachyte domes and small stocks are the remains of vent areas. Although the vol-canic rocks are a l l highly altered and show evidence of widespread chemical mobility, trace element data indicate that the rocks are meta-luminous trachytes, most closely resembling peralkaline volcanics generated in extensional environments. This suggestion of a predominantly extensional tectonic setting in mid-Mississippian time in the Pelly Mountains is consistent with recent tectonic syntheses for the area. Stratabound and stratiform massive base metal sulphide deposits that occur within the Mississippian volcanic sequence are similar in many respects to the Kuroko-type volcanogenic massive sulphide deposits of Japan. The Pel ly Mountains deposits, however, are among the f i r s t known occurrences in the world of Kuroko-type mineral izat ion in a r i f t envi ronment. - iv -TABLE OF CONTENTS Page ABSTRACT i i LIST OF FIGURES v i i LIST OF TABLES v i i i LIST OF PLATES v i i i ACKNOWLEDGMENTS ix CHAPTER 1. GENERAL INTRODUCTION 1 CHAPTER 2. STRUCTURAL AND STRATIGRAPHIC SETTING, AND TECTONIC SIGNIFICANCE OF AN UPPER DEVONIAN-MISSISSIPPIAN VOLCANIC-SEDIMENTARY SEQUENCE IN THE PELLY MOUNTAINS, SOUTHEASTERN YUKON TERRITORY 2 2.1 INTRODUCTION 2 2.2 GEOLOGICAL HISTORY OF THE PELLY MOUNTAINS 3 Miogeocline Development 3 Thrust Faulting 4 Deformation and Metamorphism 8 Offset on the Tintina Fault System 9 2.3 DETAILED GEOLOGY OF UPPER DEVONIAN-MISSISSIPPIAN UNITS 10 Structural Setting 10 Upper Devonian-Mississippian Shales 10 Mississippian Volcanic Rocks 11 Lithology 11 Geochronology 15 - V -TABLE OF CONTENTS (Continued) Page Geochemistry 21 Introduction 21 Major Element Geochemistry 22 Trace Element Geochemistry 28 Discussion 34 2.4 UPPER DEVONIAN-MISSISSIPPIAN TECTONICS IN THE PELLY MOUNTAINS 35 2.5 ACKNOWLEDGMENTS 36 2.7 REFERENCES 37 CHAPTER 3. KUROKO-TYPE MASSIVE SULPHIDE DEPOSITS ASSOCIATED WITH HIGHLY ALKALINE RIFT VOLCANICS IN SOUTH-EASTERN YUKON TERRITORY 40 3.1 INTRODUCTION.. 40 3.2 PHANEROZOIC TECTONICS AND SEDIMENTATION IM SOUTH-EASTERN YUKON 41 3.3 UPPER DEVONIAN-MISSISSIPPIAN VOLCANIC-SEDIMENTARY STRATIGRAPHY 43 3.4 CHEMISTRY OF THE MISSISSIPPIAM VOLCANIC ROCKS 45 3.5 UPPER DEVONIAN-MISSISSIPPIAN MASSIVE SULPHIDE DEPOSITS IN SOUTHEASTERN YUKON 47 Volcanic-Hosted Massive Sulphide Deposits 47 Massive Barite Deposits... 50 Other Deposits in the Selwyn Basin 54 3.6 DISCUSSION 54 3.7 CONCLUSIONS 55 3.8 ACKNOWLEDGMENTS 56 3.9 REFERENCES 56 - vi -TABLE OF CONTENTS (Continued) Page CHAPTER 4. GENERAL SUMMARY AND CONCLUSIONS 58 APPENDIX A. GEOCHEMICAL ANALYSES FOR THE PELLY MOUNTAINS IGNEOUS SUITE 59 APPENDIX B. RUBIDIUM-STRONTIUM ANALYTICAL TECHNIQUES 122 - vi i -LIST OF FIGURES Fi gure Page 2.1 Middle Paleozoic sedimentation patterns in the Yukon and Northwest Territories and northeastern Brit ish Columbia 5 2.2 Tectonostratigraphic cross-section across the central Pelly Mountains, Y.T 6 2.3 Twelve-point rubidium-strontium whole-rock isochron for Mississippian igneous rocks from the central Pelly Mountains, Y.T 18 2.4 Three-point rubidium-strontium whole-rock isochron for least-altered Mississippian igneous rocks from the Pelly Mountains, Y.T 19 2.5 Major element variation diagrams for the Pelly Mountains igneous suite 24 2.6 NagO vs. 1^ 0 plot for the Pelly Mountains igneous suite 25 2.7 Total alkalis vs. s i l i c a plot for the Pelly Mountains igneous suite 27 2.8 Trace-element variation diagrams for the Pelly Mountains igneous suite 29 2.9 Nb/Y vs. Si02 plot for the Pelly Mountains igneous suite 31 2.10 Z r / T i ^ vs. S i ^ plot for the Pelly Mountains igneous suite 32 2.11 Nb/Y vs. Zr/Ti02 plot for the Pelly Mountains igneous suite 33 3.1 Middle Paleozoic sedimentation patterns in the Yukon and Northwest Territories and northeastern Brit ish Columbia 42 3.2 Nb/Y vs. Zr /T i0 ? plot for the Pelly Mountains igneous suite 7 48 3.3 Location of Devonian and Mississippian stratabound and stratiform massive sulphide and barite deposits in southeastern Yukon 49 3.4 Metal zonation in a single d r i l l intersection of the mineralized horizon on the MM deposit 51 3.5 Cross-section through the MM deposit 52 - v i i i -Figure 3.6 Restored cross-section through the MM deposit. Page , 53 LIST OF TABLES Table 2.1 2.2 3.1 Rubidium-strontium concentrations and strontium isotopic compositions for whole-rock samples of volcanic and hypabyssal rocks from the central Pe l ly Mountains, Y.T Page 16 Rubidium-strontium concentrations and strontium isotopic compositions for mineral separates from a skarn assemblage associated with a syenite intrus ion in the central Pel ly Mountains, Y.T A comparison between major-element chemistry of rep-resentative samples of volcanic rocks from the Pel ly Mountains and average compositions of volcanic rocks from the Trans-Pecos Province and Kenya R i f t 20 46 LIST OF PLATES Plate I. Tectonic map of part of the central Pel ly S/^ cwxl Qllecfce*^ Mountains, Y.T i n ^ ae-fe-peek-et Plate II. Facies d i s t r i bu t i on map for Upper Devonian and Miss iss ippian volcanic and sedimentary units in the central Pe l ly Mountains, Y.T. SpeuJ. CAkch^^ in 'back ^eek-efe-- i x -ACKNOWLEDGMENTS I would f i r s t l i k e to acknowledge the guidance and encouragement that I have received from C.I. Godwin and R.L. Armstrong. I would also l i k e to thank Cyprus-Anvil Mining Corporation, and in par t i cu la r D.S. Jennings and P.M. Dean, for the i r on-going support, both f inanc ia l and i n sp i r a t i ona l , during the course of this study. Invaluable i n -st ruct ion and discussion regarding techniques of geochemical analysis were provided by G.T. Nixon and R.G. Berman. The work benefitted greatly from many enthusiast ic discussions with D.J. Tempelman-Kluit, I.J. Duncan, and R.R. Parr i sh. Early drafts of the thesis were reviewed by K.C. McTaggart and D.J. Whitford, and the i r help is g ratefu l l y ac-knowledged. F i na l l y , I would l i k e th thank K.L. Scott for her patience in explaining the mysteries of mass spectrometry to me. A l l f i e l d work for this study was funded by Cyprus-Anvil Mining Corporation. Analyt ica l work was supported both by a grant from the Department of Indian A f fa i r s and Northern Development (Whitehorse), and by Cyprus-Anvil Mining Corporation. - 1 -CHAPTER 1 GENERAL INTRODUCTION The geology of the Yukon Terr i tory must be known to understand the tectonics of the Northern Co rd i l l e r a . The Pel ly Mountains of south-central Yukon is one area where an almost complete record of the depositional and tectonic history is preserved. Excel lent exposures make i t possible to reconstruct a detai led geological history for this area, in sp i te of s t ructura l and metamorphic complexities. Previous regional mapping in the Pel ly Mountains has been by per-sonnel of the Geological Survey of Canada (Wheeler et a l . , 1960a, 1960b; Tempelman-Kluit, 1977b; Gordey, 1977). The study reported here is based on a tota l of s i x months of mapping, carr ied out by the author 9 during the summers of 1977 and 1978. An area of approximately 500 km in the central Pe l ly Mountains was mapped at a scale of 1:15,840 (1 inch to h mi le) . The objective was to study the structura l and s t r a t i graphic sett ing of Upper Devonian and Miss iss ippian rocks, and to examine and interpret volcanic rocks and associated base metal deposits contained with in this sequence. The results of th is invest igat ion are presented in the form of two papers to be submitted for publ icat ion. The f i r s t of these discusses the regional geology of the Pe l ly Mountains, and in par-t i c u l a r the Upper Devonian and Miss iss ippian st rata within the map area. The second deals with the volcanic-associated base metal deposits. A b r i e f summary of the results of the study follows the second manuscript. A l l ana lyt ica l data not included within the two manuscripts are reported in f u l l in Appendix A. - 2 -CHAPTER 2 STRUCTURAL AND STRATIGRAPHIC SETTING, AND TECTONIC SIGNIFICANCE  OF AN UPPER DEVONIAN-MISSISSIPPIAN VOLCANIC-SEDIMENTARY SEQUENCE  IN THE PELLY MOUNTAINS, SOUTHEASTERN YUKON TERRITORY 2.1 INTRODUCTION The Pelly Mountains of southeastern Yukon Territory l i e at the northern extremity of the Omineca Crystall ine Belt, near the transition into the Yukon Crystall ine Terrane (Tempelman-Kluit, 1977a). Exposure in the area is excellent, allowing detailed mapping and stratigraphic and structural correlation to be carried out with considerable confidence. Strata ranging in age from Upper Proterozoic through Lower Tertiary are present, and a remarkably complete record of sedimentation and tectonism is preserved. The area was f i r s t mapped by Wheeler et a l . (1960a, 1960b). De-tai led mapping and re-interpretation was subsequently carried out by per-sonnel of the Geological Survey of Canada (Tempelman-Kluit et a l . , 1975, 1976; Gordey and Tempelman-Kluit, 1976; Tempelman-Kluit, 1977a, 1977b; Gordey, 1977). The attention of mineral exploration groups in the area has recently been directed at Upper Devonian and Mississippian shales and volcanic rocks because of their potential for hosting massive sul -phide deposits. The mineral deposits have been examined in some de-ta i l by Morin (1977) and in this study (Chapter 3). The present study was focussed on'-the Upper Devonian and Missis-sippian units whose significance is highlighted in recent tectonic syn-theses for southern Yukon (Tempelman-Kluit, 1979). Approximately - 3 -2 500 km were mapped in deta i l , followed by petrographic, geochemical, and geochronological studies. 2.2 GEOLOGICAL HISTORY OF THE PELLY MOUNTAINS Miogeocline Development The sedimentary history of the Pelly Mountains has been presented by Tempelman-Kluit et a l . (1976) and Gordey (1977). From Middle Pro-terozoic through Upper Ordovician time, a miogeoclinal sequence accumu-lated along the western margin of the North American craton. This sequence consisted of c last ic sedimentary rocks, with minor Lower Cam-brian carbonates and Upper Cambrian to Ordovician basaltic and andesitic volcanic rocks. During the latter part of this time span, a narrow curvil inear shelf, referred to as the Pelly-Cassiar Platform by Gabrielse (1967), formed, roughly paral le l l ing the craton edge, but separated from i t by the Selwyn Basin (Gabrielse, 1957; Tempelman-Kluit and Blusson, 1977). The origin of the Pelly-Cassiar Platform is uncertain; Tempelman-Kl uit and Blusson (1977) propose its in i t ia t ion in Upper Cambrian time as an andesitic volcanic arc, but the presence of Lower Cambrian archeo-cyathid-bearing reef complexes (Tempelman-Kluit et a l . , 1975) suggests that shallow-water conditions may have prevailed at a somewhat ear l ier time. It is possible that i t represents the surface expression of a narrow horst formed during Upper Proterozoic or Lower Cambrian r i f t ing of the continental margin. Somewhat similar and roughly contemporaneous horst-l ike features have been documented in the Ware map-sheet in north-eastern Brit ish Columbia by Taylor et a l . (19.79). From Silurian to Middle Devonian time, the Pelly-Cassiar Platform was the s i te of shallow water carbonate and quartz sand deposition, - 4 -while shales and deep-water cherts accumulated in the Selwyn Basin to the east (Figure 2.1). In Upper Devonian arid Mississippian time, tec-tonism in southeastern Yukon resulted in extensive block-faulting, up-l i f t , and erosion, as evidence by a regional unconformity, graben-formation, and widespread deposition of locally-derived carbonaceous shales and chert-pebble comglomerates (Blusson, 1977; Smith, 1978; Gordey, 1978, 1979). Deposition of these c last ic units f i l l e d the Selwyn Basin and extended across the Pelly-Cassiar Platform. No evi -dence for the continued existence of a shallow platform in this region can be found after Upper Devonian time. Intercalated with the Devono-Mississippian shales on the Pelly-Cassiar Platform are extensive deposits of volcanic rocks of intermediate and fe l s i c composition. Upper Paleozoic and Triassic limy arg i l l i tes were deposited above the Mississippian shale and volcanic sequence. Thrust Faulting Major thrust faults within the study area (Plate I) are shown diagrametrically in Figure 2.2 on a simplified southwest-northeast tectonostratigraphic section. The nature of the lowermost structural discontinuity (Thrust Fault 'A' in Figure 2.2) is disputed. It has been interpreted as an unconformity by Tempelman-Kluit et a l . (1975; oral comm. 1978); the lack of continuity between structural fabrics developed in the rocks above and below the contact, however, suggests that i t is a surface of detachment along which an unknown amount of dis-placement has occurred. Thrust Faults 'B' and ' C clearly juxtapose older strata on top of younger. Thrust ' C was recognized as a regional feature by Wheeler et a l . (1960a, 1960b) and was named the Porcupine Thrust. Movement Fig. 2.1 Middle Paleozoic sedimentation patterns in the Yukon and Northwest Territories and northeastern Brit ish Columbia (modified after Temoelman-Kluit 1977a). ' T .L . 1 refers to the Tel sin Lineament. - 6 -STRUCTURAL UNIT SW www V ^ ; N E -_-_-----_-_-_-_=_z_=_-_os -_-Thrust c :........ Thrust B TT-sz. -S V 7 7 V V V '7^. - • • • w / > V v v > y A . . - . Thrust A -:u€0:-pi-—] shole and phyl lite ! • /vv | volcanic rocks Y/ 0\ dolomite 1 1 | limestone and marble '•[•:•:••'•$ quartz sandstone and quartzite Fig. 2 . 2 Tectonostratigraphic cross-section across the central Pelly Mountains, Y.T. - 7 -along Thrust 'B' emplaced a dist inctive sequence of Siluro-Devonian platformal rocks above the Devonian and Mississippian shales and vol-canic rocks. In Plate I i t can be seen that this sheet of platformal units is absent in the central part of the map area, but is present in both the eastern and western parts. The easternmost exposures l i e on the eastern side of strands of the Tintina Fault System, along which we believe several tens of kilometres of r ight- lateral displacement may have occurred. We think, therefore, that the thrust sheet of pH a t-formal rocks orig inal ly formed a tapering wedge, thickening to the west, and pinching out along a roughly north-south l ine through the center of the map area. An important l i thologic unit is local ly present along Thrust 'B ' . Highly sheared and brecciated serpentinites, local ly containing meta-morphically regenerated ol iv ines, form discontinuous lenses up to a kilometre in length, but rarely exceeding 30 metres in thickness. Major and trace element analyses have been carried out on four samples of these rocks (Appendix A), and show them to be ultramafic in composition, but abnormally low in Cr and Ni (0 to 126 ppm Cr; 22 to 55 ppm Ni). This may be a result of loss of these elements during serpentinization. The only other ultramafic rocks in the Pelly Mountains occur as large klippen approximately 25 km to the south-west. These have been mapped by Tempelman-Kluit (1977b) as part of the Anvil-Campbell Allochthon, a regional sheet of ultramafic rocks, basalts, and cherts of probable ophio l i t ic a f f in i ty , that were thrust over the miogeoclinal strata of the Pelly Mountains in Upper Triassic time (Tempelman-Kluit et a l . , 1976; Tempelman-Kluit, 1977a, 1979). It is l ike ly that the thrust faulting that affected the miogeo-cl inal sequence occurred beneath the Anvil-Campbell Allochthon, and that the serpentinite bodies in the study area represent sl ices of the al loch-- 8 -thon that were incorporated within the imbricate zpne during its devel-opment. Direction of transport along the thrust surfaces is uncertain. The Anvil-Campbel1 Allochthon is thought to be rooted to the southwest (Tempelman-Kluit, 1979), and an easterly or northeasterly displacement is therefore presumed for the thrust sheets. Firm evidence for this is lacking, but there are no other logical alternatives at present. The thrust faults involve units as young as Tr iass ic, but the thrust surfaces are crosscut by Upper Cretaceous plutonic rocks. The timing of the thrusting, and, by inference, the age of emplacement of the Anvil-Campbell Allochthon, is therefore bracketed between Upper Triassic and Upper Cretaceous. This is consistent with other evidence that has been compiled by Tempelman-Kluit for the timing of this event. Deformation and Metamorphism Three phases of deformation have affected the study area. All three are seen together only in the southwestern corner of the map area; elsewhere folding is less intense and generally only one or two phases are v is ib le in outcrop. The f i r s t two phases (Fj and V^) are coaxial, with a general northwesterly trend. structures are upright and tight to i soc l ina l . In the southwestern corner of the map area, however, these folds have been deformed around the noses of recumbent isocl inal structures. The mineral assemblage almandine-biotite-chlorite-muscovite, characteristic of metamorphism in the lower amphi-bol ite facies, is developed in pe l i t i c rocks of Mississippian age in this corner of the map area. This metamorphism is associated with the F event. Upper greenschist facies metamorphism accompanied F2> along with the development of a penetrative crenulation cleavage. Throughout - 9 -the rest of the map area, both and a r e characterized by lower greenschist facies matamorphism. The third phase of deformation (F^) produced northeasterly-trending regional warps with\ only minor associated recrysta l l izat ion, and local development of a crenulation cleavage. In the southwestern corner of the map area, second-phase structures deform the thrust surfaces, but first-phase structures do not. The coaxial nature of the F^  and F^ events suggests that they were closely linked in time, and we conclude that both events ref lect nappe develop-ment during the thrusting. F^ appears to be an unrelated event, possibly resulting from stresses developed during either the intrusion of Cretaceous granitic batholiths to the southwest (Tempelman-Kluit, oral comm., 1978), or the i n i t i a l wrenching associated with the offset on the Tintina Fault System. Offset on the Tintina Fault System Regional strati graphic and structural correlations within and to the northeast of the study area have been obscured by Upper Cretaceous or Lower Tertiary offset along the Tintina Fault System, a broad northwest-trending zone of transcurrent faulting along which approximately 450 km of r ight- lateral displacement has been documented (Roddick, 1964; Tempelman-Kluit, 1977a). Restoration of this displacement fac i l i ta tes the con-duct ion of maps showing general ized pre-faulting sedimentation patterns, such as is shown in Figure 2.1 (from Tempelman-Kluit, 1977a). Displace-ment occurred along a series of steeply-dipping anastomosing fault sur-faces (Tempelman-Kluit, 1977a, 1977b), however, making correlations be-tween fault blocks within the fault zone extremely tentative. Rocks in the eastern portion of the study area which are actually within the fault zone, therefore, can only be correlated in a general way with those far-ther west. - 10 -2.3 DETAILED GEOLOGY OF UPPER DEVONIAN-MISSISSIPPIAN UNITS Structural Setting Within the study area, Devono-Mississippian strata are only p r e s e n t in abundance in a single thrust sheet (Figure 2.2). This thrust sheet is rooted to the southwest and is concealed in that direction by structurally higher units. The complete distribution of the various units, therefore, cannot be determined. Exploratory d r i l l i ng through the overlying struc-tural packages has extended our knowledge of facies distribution s l ight ly beyond the southwestern l imit of surface outcrop of the Devono-Mississippian strata. Two main rock units are distinguished; a shale and chert granule gr i t sequence, and an assortment of volcanic complexes consisting of ex-tensive vol cam" c last ic deposits interbedded with volcanic flows and tuf-faceous cherts, and intruded by subvolcanic domes and stocks (Plate II). The volcanic sequence was deposited in a submarine environment, as ev i -denced by the lack of welding in the tuffs, the presence of rare pillow structures in some flow units (J.A. Morin, oral comm., 1977), and the common intercalation with marine shales. The volcanic units are both underlain and overlain by shales throughout the study area. Elsewhere in the Pelly Mountains, Gordey and Tempelman-Kluit (1976) report Missis-sippian volcanic rocks unconformably overlying Si lurian and Devonian strata; this relationship was not seen in our study area. Upper Devonian-Mississippian Shales In the study area the shales range from moderately carbonaceous to highly graphitic. They are often s l ight ly calcareous, and local ly are dist inct ly rusty-weathering as a result of abundant pyrite. They are typical ly very recessive in outcrop. In the southwestern part of the - 11 -map area, the shales have been more intensely metamorphosed and take on a slaty to phy l l i t i c appearance. Narrow lenses of carbonaceous chert granule gr it are local ly present. Near volcanic pi les, varying amounts of tuffaceous material is included within the shale, and local ly the contact between shale and argillaceous tuff is gradational. Fossiliferous strata within the shale sequence in the Pelly Mountains are extremely rare. Conodants and brachiopods collected from the upper part of the shale unit were tentatively identif ied as mid-Mississippian by B.E.B. Cameron and E.W. Bamber (pers. comm., quoted in Tempelman-Kluit et a l . , 1976). The rocks are 1ithologically correlated with Upper Devonian and Mississippian shales in the Selwyn Basin to the northeast, which are thought to represent material eroded from fault scarps within the Basin (Blusson, 1976; Gordey, 1978, 1979). Mississippian Volcanic Rocks  Li thology Mississippian volcanic rocks in the Pelly Mountains are pre-dominantly submarine l a p i l l i tuffs and agglomerates of intermediate and fe l s i c composition. Flows, dykes, and s i l l s are less abundant. A northwest-trending belt of high-level syenite domes and stocks crosses the study area. These intrude the lower portions of the volcanic section, and fragments of them are contained within some of the volcaniclastic units nearby. They are therefore considered to be subvolcanic equivalents of some of the fe l s ic tuffs and flows. The distinction between 'intermediate' and ' f e l s i c ' units is a f i e ld c lass i f icat ion that is based on the color of the rocks in hand sample. It is supported in a general way by measured SiG^ contents in the rocks, and wil l be retained for the following dis-- 12 -cussion, although mineralogical and chemical data suggest that or ig in-al ly the two rock types were not greatly different. Total thickness of the volcanic section in the study area is highly variable, ranging from less than 100 m to as much as 600 m. This range and var iabi l i ty is typical of the volcanic sequence throughout the Pelly Mountains (Tempelman-Kluit et a l . , 1976; Gordey, 1977). Volcanic units of intermediate composition comprise the bulk of the volcanic sequence. In the lower part of the sequence, these rocks form l ight ol ive grey to greenish grey-weathering outcrops. Structural complexity and discontinuous outcrop cause d i f f i cu l ty in following single units for any distance; some tuffaceous horizons, however, are traceable for up to 2 km. Vent areas for the early phase of volcanism have not yet been identi f ied. Flows are massive and local ly amygdaloidal. Individual flow and fragmental units show a wide variation in thickness, ranging from 1 to 20 m thick. Fragment size in the tuffaceous horizons also varies widely; i t is generally less than 5 cm, but blocks as large as 40 cm in diameter are local ly present. Both flows and tuffs are highly sheared, and l a p i l l i are often flattened. The rocks consist of Carlsbad-twinned K-feldspar and a lb i te-twinned plagioclase laths, often showing a dist inct ive trachytic texture. The plagioclase is a l b i t i c , although the fine grain-size hinders accurate optical determination of the An-content. The rocks are generally not porphyritic, but rare part ia l ly or wholly recrystal l ized sanidine phenocrysts with subhedral outlines have been observed in some samples. Glomeroporphyritic textures were noted in a single flow, consisting of K-feldspar and unzoned plagio-clase aggregates to 4.5 mm in diameter, set in a fine-grained ground-- 13 -mass. Gordey (1977) has reported orthoamphibole phenocrysts in a similar unit to the southeast. Fine-grained opaque minerals (mainly pyrite with a lesser am-ount of magnetite) occur as a fine dusting throughout the pheno-crysts and groundmass, as well as in the matrix of tuffaceous samples. Epidote occurs less commonly as an alteration mineral. In the southwestern corner of the map area, the intermediate volcanic rocks have been recrystal1ized to a fine-grained assemblage of K-feldspar, b iot i te , quartz, and muscovite, with minor pyrite, clay, and carbonate. Zircon is a ubiquitous accessory mineral. In some sections, a vague trachytic texture is s t i l l v i s ib le, although this is commonly obliterated by the incipient development of crenulation cleavage. A dist inctive 30 m thick flow occurs in the center of the map area. It is a 'dark;trachyte', consisting of 12 to 15% riebeckite phenocrysts in a trachytic groundmass of K-feldspar, plagioclase, and minor b iot i te. The riebeckite has been identif ied by its cleavage, low extinction angle, and dist inctive pleochroism. It occurs as skeletal and needlelike grains to 2 mm in length, that roughly parallel the alignment of the feldspar crystals. An episode of explosive fe l s ic volcanism occurred midway through the formation of the volcanic sequence, resulting in widespread depo-s it ion of fe l s ic l a p i l l i tuff and minor agglomerate. These were de-rived from several source areas, which are now recognizable as small trachyte and syenite domes and stocks. Several of these volcanic centers have been identif ied in the study area and, in each case, they are flanked by coarse agglomerate deposits which fine outwards from the intrusive body. To the south of the study area, trachyte - 14 -flows that are fed directly from small subvolcanic stocks have been identif ied by J.A. Morin (oral comm., 1978). The fe l s ic tuffs are somewhat recessive, and typical ly form bright reddish-orange gossans resulting from abundant contained pyrite. They are host to, or are immediately overlain by several small massive sulphide deposits which are thought to have formed by hydrothermal convection through the volcanic pi le (Morin, 1977; and Chapter 3 of this study). The pyrite within the fe l s i c units probably formed by the same process. The fe l s ic units are typical ly very fine-grained and non-porphyritic. They consist predominantly of K-feldspar (80-85%) with lesser amounts of plagioclase (15-20%) and minor free quartz. The plagioclase is a lb i t i c in composition. Deposits of crystal tuff of limited area! extent have been mapped at several loca l i t ies in the study area. These deposits contain fragments of both sanidine and partly resorbed euhedral quartz grains to 1.8 mm in diameter. These are the only known occurrences of quartz phenocrysts in the study area. The syenite and trachyte stocks and domes, and most of the intrusive s i l l s in the map area are mineralogically identical to the fe l s i c tuffs. Grain size in these bodies is variable, depending on the size of the intrusion. In the largest syenite stock in the map area, measuring approx-imately 12 km by 4 km, K-feldspar grains reach 1 cm in diameter. Miarol it ic cavities are also present in this body. Pervasive clay and carbonate alteration is present throughout the fe l s i c volcanic units. The metamorphic equivalents of these rocks in the southwestern corner of the map area are fine-grained K-feldspar-muscovite schists, that exhibit a well-developed pene-trative crenulation cleavage. - 15 -The upper part of the volcanic sequence consists of buff to grey-brown-weathering intermediate flows and tuf f s which are i nd i s -tinguishable from those lower in the sect ion. Laharic deposits, containing c lasts of both intermediate and f e l s i c volcanic rocks, as well as carbonaceous shale have been observed at two l o c a l i t i e s . The volcanic sequence i s capped throughout much of the Pe l ly Mountains by a l a t e r a l l y pers istent tan to buff-weathering tuffaceous and argi l laceous chert unit approximately 100 m th ick. This i s in turn over la in by carbonaceous shales. Geochronology The lack of good f o s s i l control for the shale-volcanic sequence prompted us to use i sotopic methods to date the volcanism. Due to the extremely f ine-grained nature of most of the volcanic rocks, and the abundant textural evidence for small-scale chemical mobi l i ty in the coarser-grained flows and int rus ive rocks, Rb-Sr isochrons for mineral separates from the volcanic su i te were not attempted. Rb-Sr whole-rock techniques have been applied to the volcanic su ite in th is study and by Chronic (1979) to a related syenite pluton. Data from these studies are presented in Table 2.1. Seven Rb-Sr whole-rock analyses for metamorphosed volcanic rocks from the south-west corner of the map area were previously reported by Mortensen et a l . (1978). These data have been supplemented By s ix addit ional analyses from elsewhere in the study area. The samples that were analysed t yp i ca l l y contain very small amounts of strontium, resu l t ing in high Rb/Sr ra t i o s . Consequently, the rocks are very sens i t ive to 87 8fi a l t e r a t i on , and control on the i n i t i a l Sr /Sr rat io is poor. One of the e a r l i e r analyses (No. 1275) was not used in age calculat ions 87 8fi due to i t s extreme discordance. The high Rb /Sr value for the Table 2.1. Rubidium-Strontium Concentrations and Strontium Isotopic Compositions for Whole-Rock Samples of Volcanic and Hypabyssal Rocks from the Central Pelly Mountains, Y.T. Sample Descri ption Rb Sr 8 7 Rb/ 8 6 S r 87 r /86 r Sr/ Sr Number ppm ppm A-27-A* altered trachyte 163 21 22.5 0.7891 77MM61* altered trachyte 153 94 4.7 0.7317 C-24* altered trachyte 168 46 10.6 0.7507 6-225* altered trachyte 153 57 8.6 0.7588 C-22-A* fe l s ic metatuff 130 40 9.4 0.7437 3-1275* fe l s i c metatuff 262 23 33.4 0.8007 3-1022* trachyte 150 54 8.1 0.7336 6-258 altered trachyte 232 41 16.3 0.7753 38 altered trachyte 161 38 12.4 0.7516 356 trachyte 212 55 11.2 0.7548 30 2-B fe l s i c l a p i l l i tuff 115 30 11.1 0.7482 436 trachyte 215 46 13.6 0.7717 860 syenite 68 382 : 0.-5 0.7117 N3WR** syeni te 193 160: 3.5 0.7203 N3AWR** syenite 192 159 3.5 0.7201 N3BWR** syeni te 196 152 3i7 0.7210 N5WR** syenite 119 434 0.8 0.7039 N10WR** syenite 195 50 11.3 0.7429 M27WR** syenite 19 79 0.7 0.7102 * Data from Mortensen et a l . (1977). * * Data from Chronic (1979). Al l analyses done in the Geochronology Laboratory, Department of Geological Sciences, The University of Brit ish Columbia. See Appendix B for discussion of analytical error. - 17 -sample caused i t to greatly influence the slope of the calculated regression l i n e , and hence lead to a misleading!}/ young age. The age calculated for the remaining twelve samples (Figure 2.3) is 293.6 ± 20.3 m.y., with an i n i t i a l S r 8 7 / S r 8 6 r a t i o of 0.7093 (calculated using a York, 1967, least squares regression treatment of the data). An isochron calculated for the three leas t -a l te red ( textura l l y ) samples (No. 436, 356, and 860) from the su ite y ie lds an age of 304.2 ± 19.1 m.y., with an i n i t i a l ra t io of 0.7095 (Figure 2.4). These i n i t i a l rat ios are higher than typical values for continental volcanic su i tes , and l i k e l y r e f l e c t metamorphic resett ing of o r ig ina l i sotopic ra t i o s . An age of 288.5 ± 17.5 m.y., with a strontium i n i t i a l ra t io of 0.7086 was obtained from a combined plot of the above data and data from seven whole-rock Rb-Sr analyses reported in Chronic (1979). As in the previous two cases, this isochron shows evidence of open-system behaviour and metamorphic resett ing. The most conclusive age determinations for the Pe l ly Mountains volcanism have been obtained by Chronic (1979) on mineral seoarates from a skarn developed adjacent to one of the large syenite stocks in her study area. A Rb-Sr mineral isochron (data presented in Table 2.2) y ie lds an age of 333.0 + 10.0 m.y., with an i n i t i a l ra t io of 0.7105. This s l i g h t l y older date is supported by a K-Ar date of 319.0 + 10.0 m.y. for the coarse-grained phlogopite from within the skarn (Chronic, 1979). Since the syenite body which produced the skarn was a feeder for f e l s i c tuf f s at an intermediate level: in the volcanic p i l e , an age of Meramecian-Chesterian can be confidently assigned to the vo l -- 18 -.8000 -1 1 1 1 1 l l 1 1 1 1 y .7900 - • .7800 - ' -7700 - * s -7600 .7500 .7400 Sr 8 7 Sr 8 6 -.7300 • -.7200 .7100 Rb87 Sr*fc .7000 1 l l I i i i 1 1 1 1 0 4 8 12 16 20 24 Fig. 2.3 Twelve-point rubidium-strontium whole-rock isochron for Mississippian igneous rocks from the central Pelly Mountains, Y.T. - 19 -. 7800 .7700 .7600 .7500 .7400 . 7 3 0 0 . 7 2 0 0 . 7 1 0 0 . 7000 1 1 1 1 1 I I I l 1 I I 1 -S r * 7 - --Rb 8 7 -Sr86 i 1 1 1 - 1 1 I 1 1 , , i 1 8 10 12 14 Fig. 2.4 Three-point rubidium-strontium whole-rock isochron for least-altered Mississippian igneous rocks from the Pelly Mountains, Y.T. Table 2.2. Rubidium-Strontium Concentrations and Strontium Isotopic Compositions for Mineral Separates from a Skarn Assemblage associated with a Syenite Intrusion in the Central Pelly Mountains, Y.T.* Sample Description Rb Sr 8 7 Rb/ 8 6 S r 87 c ,86c Sr/ Sr Number ppm ppm P6CWR skarn whole-rock 572 106 15.6 0.7822 P6CPh phlogopite separate 612 77 22.9 0.8220 P6CCc ca lc i te separate 4 348 0.03 0.7106 * Data from Chronic (1979). See Appendix B for discussion of analytical error. - 21 -canic p i l e . The somewhat younger whole-rock isochron dates are the resu l t of red i s t r ibut ion of Rb and Sr during regional metamorphism of the volcanic su i te . A maximum age for that metamorphism (197 m.y.) can be calculated for sample 1275, the most a ltered rock in the su ite analysed. Geochemistry Introduction. Geochemical data for the Miss iss ippian igneous rocks have been reported previously by Morin (1977; 37 analyses), Gordey (1977; 10 analyses), and Chronic (1979, 5 analyses of syenite). These data show the highly a l k a l i c character of the rocks. The r e l a t i v e l y high loss on i gn i t i on values and, in many cases poor tota l s reported, hinder quant itat ive interpretat ion of the data. Twenty-seven samoles of the igneous su ite from throughout the map area were analysed for th is study. The majority of these are from the southwest corner of the area, where diamond-drill core was ava i lab le . Thirteen of the analyses are from d r i l l - c o r e specimens; thus surface a l te rat ion in these samples i s neg l i g ib le . The remainder of the samples were selected as the freshest material obtainable from surface outcrop. A l l the samples were analysed for ten major elements and nine trace elements. Analyses were made by X-ray fluorescence, using a P h i l l i p s PW 1410 spectrometer. Major element concentrations were determined on fused rock powders, using a l i th ium tetraborate fusion f lux with La absorber, and fol lowing the procedure described by Norrish and Hutton (1969). Analyses for trace elements were carr ied out on pressed powder pe l l e t s . Data were reduced using computer programs written by G.T. Nixon (Ph.D. thes i s , in prep.) and R.G. Berman (1979). The data are present in Appendix A. In a l l cases, tota l s - 22 -are in the range of 100 ± 1.5 wt. % and in a l l but nine analyses, loss on ignition is less than 1 wt. %. Neither C0^ nor S in the rocks were determined. The main alteration noted in thin sections is the introduction of carbonate and pyrite, and i t is probable that much of the loss on ignition reported here is due to these volat i le phases. Considerable caution must be used in interpreting the geo-chemical data. The over-riding problem is that the volcanic rocks were deposited in a submarine environment, and many of them are tuffaceous. Although negligible contemporaneous sedimentary material is believed to be included in the tuffaceous samples that were analysed, the interaction between the volcanic rocks, particularly the highly permeable tuffaceous units, and seawater has almost cer-tainly produced profound changes in the original chemistry of the rocks. The presence of volcanogenic massive sulphide deposits within the volcanic sequence suggests (based on currently-accepted models for the genesis of such deposits) that extensive geothermal con-vection systems were operative around at least some of the trachyte and syenite domes and stocks, resulting in mobilization and transport of several of the major and trace elements. Furthermore, the r e l -atively high grade of metamorphism in the area from which most of the samples were collected has, at least in some cases, resulted in additional chemical alteration of the rocks. Major Element Geochemistry. Geochemical changes experienced by fresh basalts during interaction with seawater have been discussed by several authors (eg. Spooner and Fyfe, 1973; Andrews et a l . , 1974; Mottl et a l . , 1974; Andrews and Fyfe, 1976). The principal changes noted include a net gain of Na and Mg, and a net gain or loss of S i , - 23 -Ca, and K. Studies of the effects of convecting seawater through f e l s i c volcanic p i les indicate that a considerable amount of Fe can also be gained or l o s t (eg. Sato, 1973). The major elements which have been most affected by metasom-atism during the emplacement, diagenesis, and metamorphism of the Pe l ly Mountain igneous su ite are Fe and Ca (due to the introduction of pyr i te and carbonate) and the a l k a l i elements. This i s c l ea r l y demonstrated by major element var iat ion diagrams shown in Figure 2.5. In view of these observations, i t i s c lear that standard means of chemically c l a s s i f y i ng volcanic rocks (eg. Irvine and Baragar, 1971) cannot be appl ied. Several s i gn i f i can t features are evident, however. Of par t i cu la r importance are the high values of tota l a l k a l i s , ranging from 2.71 to 13.72 wt. %, with the majority of the samples containing in excess of 8.0 wt. %. Four of the samples with the lowest total a l k a l i contents show evidence of severe chemical a l t e r -at ion, pa r t i cu l a r l y by the extreme depletion in Al^O^ (7.51 to 8.23 wt. % for altered samples as contrasted with values of 12.63 to 19.83 wt. 7o for fresher rocks). These altered samples were co l lected from the southwest corner of the map area, where the metamorphic grade reaches lower amphibolite fac ies , and where chemical mobi l i ty would be most l i k e l y to occur. These four samples have been ex-cluded from the fol lowing discussion. A plot of 1^0 vs. 1^ 0 contents for the remaining twenty-three samples is shown in Figure 2.6. The resu l t i s a broad band which suggests that a process of a l k a l i exchange may have operated between potassic rock and Na-rich seawater. I t is concluded, there-fore, that the rocks have undergone substantial a l k a l i exchange - 2 4 -0.3-07 -0.6 -cvj O 0.5 " 0.4 -0.3-—t r o CM 15-I 0 W 0.5-0.4-o c 2 0.3-88 0.2-0.1 -0.0-0.24-1 0.21 -0.18-in O CJ 0.15-0. >o 0.12-0.09-0.06-54 -I r-— i — 58 62 66 % S i 0 2 70 74 78 Fig. 2.5 Major element var iat ion d i a -grams for the Pe l ly Mountains igneous su i te (data presented on a hydrous bas is) . Analyt ical error i s less than the samnle dot except Al 9 0o (2o-=±0 .33 wt. % ) , ' T i 0 9 (2 =±0.02wtT %) , Na ?0 C2 = ±0.24)7 and P 2 0 5 (2 =±0 .02 wt. %).. 54 58 62 66 70 74 78 7oS i0 2 - 25 -14-13-!2H I I-10-9-8-o o ' <£• 6-5" 4-3-2-I-0-\ \ I© \ \ \ \ \ \ \ \ \ / \ © X • J L J L J L \ 0 / \ V 4 > \ • % \ \ \ \ • \ \ • \ © x © • # \ #\ ( "i 1 1 1 1 1 1 i r~ 2 3 4 5 6 7 8 9 10 %K 2 0 12 13 0 Fig. 2.6 Na?0 vs. i^O plot for the Pelly Mountains igneous suite. - 26 -with seawater, but the tota l a l k a l i content has not been greatly affected. This can be demonstrated by comparing the composition of a sample taken from the center of a coarse-grained syenite stock in the middle of the map area, with that of another sample taken from a f iner -gra ined, bleached ' r i n d ' that is l o c a l l y present along the edge of the same stock. The composition of the syenite i s s imi la r to other published syenite analyses (eg. Carmichael et a l . , 1974, p. 385). The composition of the ' r i n d ' i s e s sent ia l l y that of a quartz keratophyre, showing Na-enrichment (from 7.73 to 10.77 wt. %) and K-depletion (from 4.64 to 0.14 wt. %). Total a l k a l i s , however, have only changed by 1.5 wt. %. Other notable changes caused by interact ion with seawater are an increase in S i 0 2 and a decrease in A l ^ and CaO. The ' r i n d ' also shows typ ica l keratophyric textures (eg. 'checkerboard'-twinning in plagio-c lase) , supporting our conclusion that i t i s a metamorphosed equi-valent of the syenite. I f our reasoning regarding a l k a l i exchange is correct, then c l a s s i f i c a t i o n schemes based on tota l a lka l i - content can be used with caution. Figure 2.7 shows one such scheme, for d iscr iminat ing between a l ka l i ne and sub-alkal ine su i tes. With few exceptions, the Pe l ly Mountains volcanics f a l l well within the a lka l ine f i e l d . The highly a lka l ine character of at least some of the volcanics i s borne out by the i r primary mineralogy, which in two of the samples analysed includes 12 to 15 % r iebeck i te . A second important feature of the major element geochemistry of these rocks i s the r e l a t i v e l y low A l ^ contents for the range of S i 0 2 contents observed. Although i t was suggested e a r l i e r that extreme Al-deplet ion in some of the highly metamorphosed rocks from - 2 7 -Fig. 2.7 Total alkal is vs. s i l i c a plot for the Pelly Mountains igneous suite. Line dividing alkaline (above) from sub-alkaline (below) is from Irvine and Baragar (1971). - 28 -the southwest corner of the study area is due to mobi l izat ion of Al during metamorphism, the less-metamorphosed samples co l lected region-a l l y are also A l - de f i c i en t , ind icat ing that i t may be a real chemical t r a i t of the volcanic su i te . The rat io (Na^O + |<20)/A1903 has been calculated for a l l of the samples, and ranges from 0.74 to 0.97, ind icat ing that most of the rocks are metaluminous, and that many border on pe ra l ka l i n i t y . In one case, the ra t io is s l i g h t l y greater than 1 , implying a peralkal ine nature. This re f lec t s a l te ra t ion and metasomatism, however, rather than the primary chemistry of the rock. Trace Element Geochemistry. Analyses for nine trace elements were carr ied out in order to further characterize the volcanic su i te. These analyses are shown diagrametr ical ly in Figure 2.8. The results provide strong support for the a l k a l i c character of the rocks. Rb and Sr contents are somewhat var iab le, and both were evidently mobile during diagenesis and metamorphism. Ba contents vary widely but are generally very high. Some of the Ba may be contained in the matrix of tuffaceous samples in the manner described by Thurlow et a l . (1975) for dacites in Newfoundland; the high Ba concen-trat ions in massive flows and int rus ive rocks, however, suggests that much of the Ba i s primary, thus lending support to the view that the primary magmas were highly potassic. Probably the most s i gn i f i can t of the trace elements analysed were Nb, Zr, and Y. These elements, along with T i 0 9 and P 2 0 5 , are r e l a t i v e l y immobile during diagenesis and subsequent meta-morphic a l te ra t ion (Pearce and Cann, 1973; Winchester and Floyd, 1975, 1977; Floyd and Winchester, 1975, 1978; Smith and Smith, 1976). This implies that the abundances of these elements measured in the rocks are close to or ig ina l values. A l l of the samples analysed are 350-— 300-ro 4f 250-X) 200-e a. a. 150-100-50-« • • 4800 -Co o^ „ tn 4000 -<f >S 3200 -o CD g 2100 • a. °- 1600 H 800 • * ••• 2100 o 5 m o o to 1500 H M E CL QL I20n 900 H 600-J 300 120 - i S« l o o - j 3 801 >• 6 O L a . 60 H 40 20 0 54 58 62 66 % S i O , 70 —I— 74 CM x> a: E a. a. 300 250 200 H I50 100 50 -0 -400 -^ 350 -v? 0 S CJ 300 • HH L. 250 -to E 200 -a. Q. I50 -I00 -50 " 78 54 \ ; i —i— 58 62 i 6G 70 ~I— 74 %SiO, Fig. 2.8 Trace element var iat ion diagrams for the Pel ly Mountains igneous su i te. Analyt ica l error (2o) i s given on abcissa. - 30 -extremely enriched in Nb, Zr, and Y, and correspondingly depleted in T i 0 o and P^O^ (Figure 2.8). In terms of absolute abundances of these elements, the Pe l ly Mountains volcanic rocks are comparable only to rocks of metaluminous and peralkal ine a f f i n i t i e s (Winchester and Floyd, 1977). Plots of immobile elements and element rat ios have been pre-pared by Winchester and Floyd (1977) for d iscr iminat ing between various rock types. These discriminants have been tested and found e f fec t i ve for volcanic rocks spanning a wide range of compositions, and at metamorphic grades as high as granul i te facies (Floyd and Winchester, 1978). These are the only discriminants ava i lab le as yet that can be applied to f e l s i c rocks. The discriminants i dent i f y only rock types, and do not d ist inguish between tectonic regimes of magma genesis or emplacement. Three discriminant plots are employed here. In Figure 2.9 and 2.10 the rat ios of Nb/Y and Z r / T i ^ are plotted against S i ^ content. Both plots show remarkably consistent values for the rat ios over a wide range of SiO^ contents. In each case, the data show a wide d i s t r i bu t i on , f a l l i n g in several of the delimited f i e l d s , but gen-e ra l l y being re s t r i c ted to the highly a l k a l i c rock types. The common mobi l izat ion of SiO,, during metamorphism has led Floyd and Winchester (1978) to caution against the use of the above plots in interpret ing data from metamorphosed volcanic su i tes. The preferred technique i s to plot Nb/Y vs. Zr/TiO^. The resu l t ing plot (Figure 2. shows that, with a s ingle exception, the Pe l ly Mountains data plot ent i re l y within the trachyte f i e l d . This evidence i s taken as con-f irmation that these rocks are highly a l k a l i c trachytes, and that much of the var iat ion of SiO^^ content observed in the suite re f lec t s - 3 1 -48 RHYOLITE RHYODACITE DACITE •• • COMENDITE PANTELLERITE • • • • • • » _ TRACHYTE • ANDESITE \ • r \ PHONOLITE • \ TRACHYANDESITE \ SUB-ALKALINE BASALT ALKALI / ^ \ ^ BASALT /BASANITE /NEPHELINITE 1 1 1 1 — i — i — i — r l 1 1 1 — i — i — r — r o.to 1.00 N b / Y 10.0 ig. 2.9 Nb/Y vs. SiO^ plot for the Pelly Mountains igneous suite. - 32 -- 33 -COMENDITE PHONOLITE RHYOLITE \ RHYODACITE DACITE ANDESITE TRACHYTE ANDESITE/SASALT / / S U B - A L K A L I N E BASALT ALKALI -BASALT BA3ANITE NEPHELINITE O.OI 0.10 I 1.0 N b / Y 10.0 100.0 Fig. 2 . 1 1 Nb/Y vs. Zr/TiO^ plot for the Pelly Mountains igneous suite. - 34 -chemical a l te ra t ion rather than the primary chemistry of the rocks. Discussion. The Pe l ly Mountains volcanic rocks are unusual in terms of both the i r major and trace element contents, and there i s evidence that at least some of these geochemical pecu lar i t ies are o r i g i n a l . It i s useful to compare these rocks with other suites from varying magmatic associations. Major element abundances do not preclude the rocks from being a l k a l i c members of a volcanic arc sequence; however, they most c lose ly resemble metaluminous and per-a lka l i ne rocks such as those from the Kenyan R i f t Zone (MacDonald et a l . , 1970), the Trans-Pecos Province (Barker, 1977), or from oceanic islands (Baker, 1974). This s i m i l a r i t y is borne out by the trace element abundances. Such high values of Mb, Zr, and Y have only been recorded in highly metaluminous and peralkal ine suites (Winchester and Floyd, 1977); we conclude, therefore, that the Pel ly Mountains volcanic rocks represent such a su i te . Metaluminous and peralkal ine volcanic rocks have been the sub-jec t of many recent studies. The evidence is not completely con-c lu s i ve , but the consensus of these studies i s that with the exception of oceanic i s lands, th i s type of magmatism is in v i r t u a l l y a l l cases associated with an extensional environment (eg. MacDonald, 1974; V i l l a r i , 1974; Smith et a l . , 1977; Barker, 1977). Although l i t t l e evidence for crustal extension in Miss iss ippian time has been found in our study area, a marked unconformity is l o ca l l y evident beneath the Devono-Mississippian sequence elsewhere in the Pe l ly Mountains (Gordey and Tempelman-Kluit, 1976; Gordey, 1977), suggesting at least local u p l i f t at that time. Abundant evidence for contem-poraneous extension has been documented within the Selwyn Basin to - 35 -the east of the study area (Blusson, 1976; Tempelman-Kluit and Blusson, 1977; Smith, 1978; Gordey, 1978, 1979). This evidence, coupled with the dist inctive geochemical data reported in this paper, make i t highly probable that the Mississippian volcanic rocks in the Pelly Mountains were generated within an extensional tectonic regime. 2.4 UPPER DEVONIAN-MISSISSIPPIAN TECTONICS IN' THE PELLY MOUNTAINS Tempelman-Kluit (1979) has compiled evidence from southeastern and south-central Yukon which suggests the following series of tectonic events in Upper Paleozoic and Lower Mesozoic time in that area: in Mississippian (or s l ight ly earl ier) time, east-dipping subduction was in it iated outboard of the present position of the Teslin Lineament (Figure 2.1) with the subsequent formation of a volcanic arc in what is now central and south-central Yukon. A tensional environment developed behind the arc, resulting in extensive block-faulting and the deposition of Upper Devonian and Mississippian shales and conglomerates as already discussed. This r i f t ing was eventually local! ized at the present pos-it ion of the Teslin Lineament, and a marginal basin opened, with a typical ocean f loor. A profound change in the tectonic style west of this basin occurred in Lower Mesozoic time, and led to the closure of the marginal basin, with final suturing of the arc against the continental margin in Lower Jurass ict ime. During the closure, portions of the marginal basin floor (now represented by the Anvil-Campbel1 Allochthon) were ob-ducted onto the continental edge. The results of our study support several aspects of this tectonic model. The geochemistry of the Mississippian volcanic rocks in the Pelly Mountains suggests their formation in an extensional setting, prob-- 36 -ably corresponding to incipient formation of the aforementioned marginal basin. As discussed, folding and thrusting observed in the Pelly Mountains occurred within an imbricate zone beneath the Anvil-Campbell Allochthon (as evidenced by the presence of tectonized serpentinite bodies along thrust surfaces). The emplacement of the ophio l i t ic sheet and the closure of the marginal basin must therefore be post-Upper Tr iass ic, because rocks of this age are involved in the deformation. The age of i n i t i a l r i f t ing that led to the formation of the marginal basin is approx-imately mid-Mississippian. 2,5 ACKNOWLEDGMENTS I am indebted to the management of Cyprus-Anvil Mining Corporation for f i e ld support during the course of this study, and for permission to publish proprietory information from company reports. Discussions with D.S. Jennings and P.M. Dean of Cyprus-Anvil Mining Corporation, D.J. Tempelman-Kluit of the Geological Survey of Canada, J.A. Morin of the Department of Indian Affairs and Northern Development (Whitehorse), and I.J. Duncan and R.R. Parrish of the Department of Geological Sciences, University of Brit ish Columbia, contributed much to the project. The cheerful and patient advice of G.T. Nixon, R.G. Berman, and K.L. Scott on geochemical and geochronological techniques and interpretation is gratefully acknowledged. Analytical work was supported by grants from the Department of Indian Affairs and Northern Development (Whitehorse) and Cyprus-Anvil Mining Corporation. - 37 -2.6 REFERENCES Andrews, A . J . , Barnett, R.L., MacClement,B.A.E., Fyfe, W.S., Morrison, G., MacRae, N.D., and Starkey, J . , 1974, Zeolite facies metamorphism, geochemistry, and some aspects of trace-element re-distribution in altered basalts of DSDP, Leg 37. Init ia l Report of the Deep Sea Dr i l l ing Project, 37, pp. 795-802. Andrews, A.J. and Fyfe W.S., 1976, Metamorphism and massive sulphide generation in oceanic crust. Geosc. Can. 3, pp. 94-94. Baker, P.E., 1974, Peralkaline acid volcanic rocks of oceanic islands. Bu l l . Vole. 38, pp. 738-754. Barker, D.S., 1977, Northern Trans-Pecos magmatic province; introduction and comparison with the Kenyan Rift . Geol. Soc. Amer. Bul l . 88, pp. 1421-1427. Berman, R.G., 1979, The Coquihalla Volcanic Complex, southwestern Brit ish Columbia. Unpublished M.Sc. Thesis, University of Br it ish Columbia, 170 p. Blusson, S.L., 1976, Selwyn Basin; Yukon and Distr ict of Mackenzie. Geol. Surv. Can. Paper 76-1A, pp. 131-132. Carmicael, I.S.E., Turner, F .J . , and Verhoogen, J . , 1974, Igneous petrology. McGraw-Hill, Inc., New York, 739 p. Chronic, F., 1979, Geology of the Guano-Guayes rare earth element-bearing skarn property, Pelly Mountains, Yukon Territory. Unpublished M.Sc. Thesis, University of Brit ish Columbia, 122 p. Floyd, P.A. and Winchester, J.A., 1975, Magma type and tectonic setting discrimination using immobile elements. Earth Planet. Sci . Lett. 27_, pp. 211-218. Floyd, P.A. and Winchester, J.A., 1978, Identification and discrimination of altered and metamorphosed volcanic rocks using immobile elements. Chem. Geol. 21, pp. 291-306. Gabrielse, H., 1967, Tectonic evolution of the Northern Canadian Cordi l lera. Can. J . Earth Sci. 4, pp. 271-298. Gordey, S.P., 1977, Stratigraphy, structure, and tectonic evolution of the southern Pelly Mountains in the Indigo Lake area, Jukon Territory. Unpublished Ph.D. Thesis, Queen's University, 200 p. Gordey, S.P. 1978, Stratigraphy and sturcture of the Summit Lake area, Yukon Territory and Distr ict of Mackenzie. Geol. Surv. Can. Paoer 78-1A, pp. 43-48. Gordey, S.P., 1979, Stratigraphy of southern Selwyn Basin in the'Summit Lake area, Yukon Territory and Northwest Terr i tor ies. Geol. Surv. Can. Paper 79-1A, pp. 13-16. - 38 -Gordey, S.P. and Tempelman-Kluit, D.J., 1976, Stratigraphic and structural studies in the Pelly Mountains, Yukon Territory. Geol. Surv. Can. Paper 76-1B, pp.1-5. Irvine, T.N. and Baragar, W.R.A., 1971, A guide to the chemical class-i f i cat ion of the common volcanic rocks. Can. J . Earth Sci. 8, pp. 523-547. MacDonald, R., 1974, Tectonic settings and maqma associations. Bul l . Vole. 38, pp. 575-593. MacDonald, R., Bailey, D.K., and Sutherland, D.S., 1970, Oversaturated peral kal ine glassy trachytes from Kenya. J . Petrol. 1_1, pp. 507-517. Morin, J.A., 1977, Ag-Pb-Zn mineralization in the MM deposit and associated Mississippian fe l s ic volcanic rocks in the St. Cyr Range, Pelly Mountains. Dept. Indian and Northern Af fa i rs , 1976 Mineral Inventory Report, pp. 83-97. Mortensen, J.K., Godwin, C.I., and Armstrong, R.L., 1977, Rb/Sr isochron for metavolcanic rocks from the MM deposit, Pelly Mountains, Y.T. Dent. Indian and Northern Affa irs , 1977 Mineral Inventory Renort, pp. 25-26. Mottl, M.J., Corr, R.F., and Holland, H.D., 1974, Chemical exhange getween seawater and mid-ocean ridge basalt during hydrothermal alteration: an experimental study. Geol. Soc. Amer. Abst. with Prog. 6, pp. 879-880. Norrish, K and Hutton, J .T . , 1969, An accurate X-ray spectrographs method for analyses of a wide range of geological samples. Geochim. Cosmochim. Acta 33, pp. 431-453. Pearce, J.A. and Cann, J.R., 1973, Tectonic setting of basic volcanic rocks determined using trace element analyses. Earth.Planet. Sci . Lett. 19, pp. 290-300. Roddick, J.A., 1964, The Tintina Trench, J . Geol. 75, pp. 23-33. Sato, T., 1973, A chloride complex model for Kuroko mineralization. Geochem. J . (Japan) 7_, pp'. 245-270. Smith, C.L., 1978, Geological setting of Jason and Tom deposits, Mac-Mi11 an Pass area, eastern Yukon. Paper presented at 1978 Geoscience Forum, Whitehorse, Y.T., Dec. 3-5, 1978. Smith, I.E.M., Chappel, B.W., Ward, G.K., and Freeman, R.S., 1977, Peralkaline rhyolites associated with andesitic arcs of the south-west Pacif ic. Earth Planet. Sci . Lett. 37_, pp. 230-236. Smith, R.E. and Smith, S.E., 1976, Comments on the use of T i , Zr, Y, Sr, K, P, and Nb in c lass i f icat ion of basaltic magmas. Earth Planet. Sc i . Lett. 32, pp. 114-120. - 39 -Spooner, E.T.C., 1973, Sub-sea-floor metamorphism, heat, and mass transfer. Contrib. Mineral. Petrol. 42, pp. 287-304. Taylor, G.C., Cecile, M.P., Jefforson, C.W., and Norford, B.S., 1979, Stratigraphy of Ware (east half) map area, northeastern 3r i t i sh Columbia. Geol. Surv. Can. Paper 79-1A, pp. 227-231. Tempelman-Kluit, D.J., 1977a, Stratigraphic and structural relations between the Selwyn Basin, Pelly-Cassiar Platform, and Yukon Crys-ta l l ine Terrane in the Pelly Mountains, Yukon. Geol. Surv. Can. Paper 77-1A, pp. 223-227. Tempelman-Kluit, D.J., 1977b, Quiet Lake and Finlayson Lake map sheets. Geol. Surv. Can. Open Fi le Map 486. Tempelman-Kluit, D.J., 1979, Transported cataclasite, ophiol ite, and granodiorite in Yukon: evidence of arc-continent co l l i s ion. Geol. Surv. Can. Paper 79-14, 27 p. Tempelman-Kluit, D.J., Abbot, G., Gordey, S.P., and Read, B., 1975, Stratigraphic and structural studies in the Pelly Mountains, Yukon Territory. Geol. Surv. Can. Paper 75-1A, pp. 45-48. Tempelman-Kluit, D.J., Gordey, S.P., and Read, B.C., 1976, Stratigraphic and structural studies in the Pelly Mountains, Yukon Territory. Geol. Surv. Can. Paper 76-1A, pp. 97-106. Tempelman-Kluit, D.J. and Blusson, S.L., 1977, Pelly-Cassiar Platform and Selwyn Basin: neither without the other. Geol. Ass. Can. Prog, with Abst. 2, p. 52. Thurlow, J .G. , Swanson, E.A., and Strong, D.L., 1975, Geology and l i tho-geochemistry of the Buchans polymetallic sulDhide deposits, New-foundland. Ec. Geol. 70, pp. 130-144. Vii lan", L., 1974, The island of Pantelleria. Bul l . Vole. 38, po. 680-724. Wheeler, J.O., Green, 1..H.,, and Roddick, J.A., 1960a, Quiet Lake. Geol. Surv. Can. Map 7-1960. Wheeler, J.O., Green, L.H., and Roddick, J.A., 1960b, Finlayson Lake. Geol. Surv. Can. Map 8-1960. Winchester, J.A. and Floyd, P.A., 1976, Geochemical magma type discrim-ination: application to altered and metamorphosed basic igneous rocks. Earth Planet. Sc i . Lett. 28, pp. 459-469. Winchester, J.A. and Floyd, P.A., Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chem. Geol. 20, pp. 325-343. York, D., 1967, Best isochron, Earth Planet. Sci . Lett. , 2, D O . 479-482. - 40 -CHAPTER 3 KUROKO-TYPE MASSIVE SULPHIDE DEPOSITS ASSOCIATED WITH HIGHLY  ALKALINE RIFT VOLCAMICS IN SOUTHEASTERN YUKON TERRITORY 3.1 INTRODUCTION In recent years numerous attempts have been made to classify specif ic types of volcanogenic massive sulphide deposits in terms of tectonic setting and petrochemistry of associated volcanic rocks. One correlation that often appears in the l i terature, and is commonly used as a cr iterion for massive sulphide exploration programs, is the relat ion-ship between Kuroko-type ores and subduction-related, calc-alkaline arc volcanism (eg. Hutchinson, 1973). This association has recently been questioned by Stauffer et a l . (1975), Mwanang'onze (1975), and Fox (1979), who have established that Kuroko-type deposit often occur in volcanic piles consisting of t ho le i i t i c , rather than calc-alkal ine fe l s i c differentiates. The purpose of this paper is to describe Upper Paleozoic Kuroko-type deposits in northwestern Canada that occur in volcanic rocks that are highly alkaline and which probably formed in a r i f t environment, rather than within a volcanic arc. Although none of the deposits that wil l be discussed have yet been proven to be economic, they represent an important exception to a dogma which may at present be restr ict ing exploration for Kuroko-type deposits. Before describing the massive sulphide deposits of the Pelly Mount-ains in deta i l , the Phanerozoic geological history of southeastern Yukon wil l be br ief ly reviewed. Two other groups of stratabound deposits in that area wil l be discussed in addition to the volcanic-hosted ones, in - 41 -an attempt to relate the formation of several types of deposit to the Upper Paleozoic tectonics in the Pelly Mountains and adjacent terranes. 3.2 PHANEROZOIC TECTONICS AND SEDIMENTATION IM SOUTHEASTERN YUKON The geology of the Pelly Mountains, southeastern Yukon Territory, is both structurally and stratigraphically complex. Recent detailed mapping by Geological Survey of Canada personnel (eg. Tempelman-Kluit et a l . , 1976; Tempelman-Kluit, 1977; Gordey, 1977) has provided a gen-eral understanding of the geological history of the area. From Middle Proterozoic through Upper Ordovician time a miogeoclinal sequence bui l t up along a quietly subsiding continental margin (the western edge of the North American craton). This sequence consisted predominantly of c last ic sediments, with minor Lower Cambrian carbonates and Upper Cambrian-Ordo-vician basaltic volcanic rocks. During the latter part of this time span the Pelly-Cassiar Platform, a positive area with shallow water sedimen-tation, lay offshore, parallel to the continental platform edge, but separated from i t by the Selwyn Basin. From Si lurian to Middle Devonian time, the Pelly-Cassiar Platform was the site of carbonate and quartz-rich sandstone deposition, while shales and deep-water cherts accumulated in the Selwyn Basin to the northeast (Figure 3.1). In Upper Devonian to approximately mid-Mississippian time, a pro-found tectonic change occurred in the southeastern Yukon. In the Selwyn Basin, extensive up l i f t , block-faulting, and erosion occurred, as ev i -denced by a regional unconformity, graben-formation, and the widespread deposition of locally-derived carbonaceous shales and chert-pebble con-glomerates (Smith, 1978; Gordey, 1979; Came, 1979). Deposition of these c last ic units extended right across the Pelly-Cassiar Platform, - 42 -Y U K O N N.W.T. A L A S K A detailed -map-area Fig. 3.1 Middle Paleozoic sedimentation patterns in the Yukon and Northwest Territories and northeastern Brit ish Columbia (modified after Tempelman-Kluit , 1977). . - 43 -which ceased to exist after Upper Devonian time. The Upper Devonian-Mississippian strata on the previously miogeoclinal Pelly-Cassiar Plat-form contain extensive deposits of Lower to Upper Mississippian inter-mediate and fe l s ic volcanic rocks intercalated with black shales. The volcanic rocks and their associated mineralization wil l be the main focus of this paper. From mid-Mississippian through at least Upper Triassic time, limy arg i l l i te s were the principal lithology over the region of the former Pelly-Cassiar Platform. Three main factors have complicated the relat ively simple s t r a t i -graphic relationships discussed above. The f i r s t is extensive thrust faulting and associated metamorphism, thought to be related to imbri-cation beneath a large over-riding ophiolite slab (the Anvil-Campbell Allochthon) that was emplaced in Lower Jurassic time (Tempelman-Kluit et a l . , 1976; and Chapter 2 of this study). The second is intrusion by Upper Cretaceous granitic batholiths, and the third is s t r ike-s l ip faulting along the Tintina Fault Zone, a transcurrent fault system that affects the northeastern part of the study area, and offsets both .geo-synclinal strata and Cretaceous batholiths (Tempelman-Kluit, 1977). Sufficient detailed mapping has been carried out in the Pelly Mountains by Tempelman-Kluit and others to sat is factor i ly resolve most of the problems in correlation imposed by these factors. 3.3 UPPER DEVONIAN-MISSISSIPPIAN VOLCANIC-SEDIMENTARY STRATIGRAPHY Upper Devonian and Mississippian rocks of the Pelly Mountains con-s i s t of thick accumulations of black shale containing minor chert granule gr i t , with local ly voluminous volcanic rocks (Plate II). These volcanic rocks form coalescing piles of volcaniclastic material, with a few recog-- 44 -nizable flows and intrusive bodies. The rocks were deposited in a marine environment, as evidenced by a lack of welding in the tuffaceous units, the presence of rare pillow structures (J.A. Morin, oral comm. 1977), and intercalation with marine black shales. Several volcanic centers can be identi f ied, most of which are characterized by the pre-sence of syenite and trachyte domes and stocks. The volcanic section is capped by a lateral ly persistent tuffaceous chert horizon. The thick-ness of the volcanic section reaches 600 m, but is generally less than 100 m. Total thickness of the Upper Devonian-Mississippian sequence in the map area ranges from 500 to 800 m. Isotonic age determinations have been made for the volcanic units - a rubidium-strontium whole-rock isochron yielding a minimum age of 304 ± 19 m.y. (Chapter 2 of this study), a potassium-argon phlogopite date of 319 ± 10 m.y. (Chronic, 1979), and a rubidium-strontium mineral isochron of 333 ± 10 m.y. Within the area mapped in detail by Mortensen (shown in Plate II) the Mississippian volcanic rocks occur within a single regionally ex-tensive thrust-bounded sheet, although the latera l ly equivalent Devono-Mississippian black shales are present in several other structural s l ices. The thrust sheet containing the volcanic rocks is rooted to the southwest, and is concealed by structurally-higher units in that direction, therefore the present extent of the volcanic rocks cannot be completely determined. This situation pertains throughout the central Pelly Mountains (Gordey, 1977; C. Lalonde, oral comm., 1979). The thrust sheet containing the volcanic rocks has suffered three phases of deformation, with the f i r s t two probably relating to thrusting (Chapter 2 of this study). At the southwesternmost exposure of the thrust sheet, synkinematic metamorphic grade reaches lower amphibolite - 45 -facies, but throughout most of the map area, the rocks are in lower greenschist facies. 3.4 CHEMISTRY OF THE MISSISSIPPIAN VOLCANIC ROCKS Twenty-seven samples of the volcanic rocks were analysed for major and trace elements. Four of these were discarded because of obvious textural and/or chemical evidence of alteration and metasomatism. The remaining twenty-three analyses are summarized in Table 3.1. The chem-istry of the volcanic units is discussed at length in Chapter 2. The outstanding chemical features in the major element contents are extremely high total alkal i and low alumina contents. The molecular alkali/alumina ratio for these rocks ranges from 0.71 to 0.97, showing that they are highly alkal ine, and many border of peralkalinity. While i t can be argued that these chemical pecularities may be due to a l ter-ation, the presence of as much as f i fteen percent (by volume) of primary modal riebeckite in two of the sodic trachytes analysed strongly sug-gests that the volcanics are of highly alkaline character. The analyses included also agree well with other published and unpublished data for these rocks (Morin, 1977; Gordey, 1979). The rocks analysed cannot be precisely c lass i f ied using standard chemical c r i ter ia because of per-vasive alteration, commonly involving introduction of carbonate and pyrite. The major element chemistry, however, is closely comparable with that of rocks of the Kenyan Rift Zone (MacDonald et a l . , 1970) and the Trans-Pecos Province of West Texas (Barker, 1977), both of which occur in intra-plate r i f t environments. Average analyses from these provinces are included in Table 3.1. Measured abundances of specif ic minor and trace elements in the Table 3.1 A' Comparison between Major-Element Chemistry of Representative Samples of Volcanic Rocks from the Pelly Mountains and Average Compositions of Volcanic Rocks from the Trans-Pecos Province and Kenya R i f t . * Pelly Mountains Trans-Pecos Kenya Rock type No. of analyses syenite 1 trachyte 1 altered trachyte 1 altered trachyte 1 trachyte + syenite 23 trachyte + syenite 22 S i0 2 64.9 65.1 61.1 59.9 64.1 61.5 T i 0 2 0.6 0.5 0.5 0.4 ' 0.4 0.8 A 1 2 ° 3 . 19.9 13.6 15.7 16.5 16.6 14.2 Fe 2 0 3 0.9 7.3 9.2 8.3 3.2 3.7 FeO - - - - 1.0 4.2 MnO 0.0 0.1 0.2 0.2 0.2 0.3 MgO 0.2 0.0 0.9 0.9 0.3 0.5 CaO 1.1 2.3 1.3 2.3 1.1 1.5 K20 4.7 10.3 5.8 9.0 5.3 4.8 Na20 7.8 0.6 5.4. 2.4 6.2 7.0 P 2°5 0.1 0.2 0.1 0.2 0.1 0.2 Al l analyses are presented on an anhydrous basis. ** Average values for the Trans-Pecos Province and Kenya Rift are from Barker (1977). F e t o t a l i s Qiven as Fe 2 0 3 for Pelly Mountains analyses. - 47 -Pelly Mountains igneous suite are also very s ignif icant. Mb, Zr, and Y are strongly enriched relative to most other volcanic suites, and are only comparable to rocks of peralkaline a f f in i t ie s (Winchester and Floyd, 1977). A plot of Zr/T i0 2 vs. Nb/Y, thought to be relat ively insensitive to chemical alteration (Winchester and Floyd, 1977), sug-gests that a l l of the Pelly Mountains Mississippian volcanic rocks are trachytes (Figure 3.2). It is suspected, therefore, that the Pelly Mountains suite formed in a r i f t environment. This agrees well with the recent tectonic synthesis of southern Yukon by Tempelman-Kluit (1979) which cal ls for Upper Devonian and/or Mississippian block-faulting and volcanism associated with incipient marginal basin spreading. This spreading became local l ized farther to the southwest, along the present-day Teslin Lineament. Closure of the marginal basin occurred in Upper Triassic or Lower Jurassic time. 3.5 UPPER DEVONIAN-MISSISSIPPIAN MASSIVE SULPHIDE DEPOSITS IM SOUTHEASTERN YUKON Volcanic-Hosted Massive Sulphide Deposits Five stratabound and stratiform zinc-lead-barite deposits of Devonian to Mississippian age have been discovered in the Pelly Mountains to date (Figure 3.3). All of these share the following features with the Kuroko deposits of Japan: 1) they form above or near small fe l s ic domes or plugs, 2) they occur within sequences of fe l s i c and intermediate volcanic rocks, generally at the late stages of a fe l s i c cycle, 3) metal values are typical ly Zn>Pb>Cu>Ag, 4) barite forms massive to bedded sucrosic deposits (often with abundant pyrite) distal to the main base metal sulphide deposit. Rare re l i c t botryoidal textures in the pyrite have been reported from - '48 -IO.O-J 1.0 CM ° . 1 0 0.0H 0.001 COMENDITE PANTELLERITE/ PHONOLITE TRACHYTE ANDESITE . ANDESITE/SASALT / / SUB-ALKALINE BASALT ALKALI -BASALT BA5ANITE NEPHELINITE 0.01 0.10 I 1.0 N b / Y 10.0 100.0 Fig. 3.2 Nb/Y vs. Zr /T i0 2 plot for the Pelly Mountains igneous suite. Fig 3.3 Location of Devonian and Mississippian stratabound and stratiform massive sulphide and barite'deposits in southeastern Yukon Territory. Deposits are as follows; 1) MM; 2) MATT CREEK; 3) BNOB; 4) CHZERPNQUGH; 5) JOE; 6} GREW; 7) TOM-JASON-TEA-PETE. Dashed l ine on the right-hand figure outlines the area mapped in detail in this study. - 50 -the MM deposit and from the JOE deposit (#1 and #5 on Figure 3.3) by J.A. Morin (written comm., 1978). Only one of the known deposits has been extensively dr i l l - tes ted (MM deposit). In this deposit, several further s imi lar it ies to Kuroko-style mineralization are present. A well-developed pipe or stringer zone, consisting of quartz, chlor i te, pyrite, and chalcopyrite stringers within fractured massive trachyte, underlies the main sulphide lens. Also, a crude metal zonation is evident in the main lens, as shown in Figure 3.4. Structural geology imposed by thrust faulting and deformation is evident in a cross-section through the MM deposit (Figure 3.5). A restored cross-section through the same section prior to deformation is shown in Figure 3.6, depicting sulphide deposition in a volcanic pi le within a black shale sub-basin, and emphasizing the s imi lar i t ies to the Kuroko model. The best d r i l l intersection obtained to date for the Pelly Mountains deposits is from the MM property, where 4.0 m (true thickness) grading 10.4% combined metals was intersected in a d r i l l hole which cut the main sulphide lens and passed through part of the stringer zone. It is s ig-nificant to note that, on the MM property, the mineralized horizon con-taining sulphides thought to be genetically related to this stringer zone is over 3.5 km in length prior to unfolding, attesting to the wide-spread s tab i l i ty of sulphide deposition conditions. The other deposits appear to be smaller than the MM deposit, although they have not been dr i l l - tes ted extensively. Massive Barite Deposits At least one massive bedded barite deposit occurs within the same volcanic sequence in the Pelly Mountains. It is shown as #6 in Figure 3.3. Cu(%) Pb(%) Zn(%) 0.0 0.8 1.6 2.4 3.2 0 4 8 12 16 0 4 8 12 16 8 3 0 H 0> 0» 8 4 0 H Q . 8 5 0 H 8 6 0 8 7 0 1 I 1 • 250 r -252 H254 [-256 £ r-258 E 13 262 2 6 6 Fig. 3.4 Metal zonation in a single d r i l l intersection (Dri l l Flole 77-03) of the mineralized horizon on the MM deposit. I I I I I 0 100 metres no vertical exaggeration ,o..o alluvium pelitic phyllite and schist massive trachyte XX* 2 serpentinite . interbedded pelites and volcanic rocks ^T^jl carbonates volcanic rocks massive sulphides and barite ~ ~ J phyllites Fig. 3.5 Cross-section through the MM deposit. D r i l l holes 77-04, 76-06, and 76-07 are angled holes projected into the plane of the sect ion. SW NE metres approximate horizontal and vertical scale CO Fig. 3 . 6 Restored cross-section through the MM deposit. - 54 -The deposit consists of massive to thin-bedded barite, local ly inter-bedded with chert. No sulphides have been reported from within the barite. The deposit has a strike length of at least 12 km. It is closely as-sociated with the tuffaceous chert unit that caps the volcanic sequence regionally, and its relationship to the volcanic-hosted base-metal de-posits is uncertain at present. Other Deposits in the Selwyn Basin A number of stratiform barite and zinc-1ead-barite deposits occur in Devonian and Mississippian shales of the eastern Selwyn Basin (#7 in Figure 3.3). Most of these occur within northwest-trending fault-bounded grabens or half-grabens (Smith, 1978; Carne, 1979; Lydon et al ., 1979). Although spatial ly and depositionally dist inct from the volcanic-hosted deposits of the Pelly Mountains, the two types of deposit formed both contemporaneously and within a similar extensional tectonic regime, suggesting the poss ibi l i ty of a genetic relationship. 3.6 DISCUSSION The Pelly Mountains volcanic rocks were generated in a r i f t environ-ment. The deposits described above therefore represent a class only rarely reported in the l i terature, namely volcanogenic massive sulphide deposits associated with highly alkaline rocks in a tensional rather than a compressional tectonic setting. The only other similar deposits are found in northeast F i j i (Colley and Rice, 1978). This distinction is highly s ignif icant, because i t emphasizes the physical, as opposed to chemical aspects of the 'Kuroko model 1, ie. the need for only a small high-level heat source to drove the convection of base-metal transporting waters, rather than a particular chemical composition for the volcanic pi le in which the deposit forms. Alkaline volcanic rocks represent a - 55 -source of base metals and barium as good or better than ca l c -a l ka l i ne rocks. The paucity of massive sulphide deposits associated with a lka l ine or peralkal ine volcanic rocks is eas i ly explainable i f one considers the i n t r i n s i c r a r i t y of such rocks [less than 1% of a l l volcanic rocks) and the sett ing in which they are t yp i c a l l y generated. Only two such en-vironments have been i den t i f i ed thus f a r ; these are in i n t ra -p l a te r i f t settings such as the Kenyan R i f t or the Trans-Pecos Province of west Texas and as l a te stage d i f fe rent ia tes in oceanic seamounts. Neither of these settings is su i table for the formation of massive sulphide de-pos i t s , because f e l s i c volcanism in i n t ra -p la te r i f t zones i s t yp i c a l l y sub-aer ia l , and because oceanic seamounts do not contain extensive v o l -can i c l a s t i c and sedimentary sequences from which to extract metals. An ideal sett ing for massive sulphide bodies is in marginal basins; volcanism in these environments,"however, does not commonly include f e l s i c rocks, being generally re s t r i c ted to basalts. The tectonics of southeastern Yukon are unusual , in that a r i f t basin, complete with f e l s i c d i f f e ren t i a te s , appears to have formed within a previously mio-geoclinal area, resu l t ing in f e l s i c volcanic centers in a euxinic shale basin from which ore f l u id s can be extracted. S imi lar geologic settings elsewhere in the world are extremely rare. 3 . 7 CONCLUSIONS The volcanogenic massive sulphide deposits in the Pe l ly Mountains of southeastern Yukon Terr i tory are very s im i la r to the Kuroko-type deposits, but have formed in highly a lka l ine rocks in a r i f t environment. We think that th i s conclusion serves both as a support for the ex i s t ing model for Kuroko-type deposit genesis, and as a caution to exploration - 56 -geologists against setting excessively restr ict ive c r i ter ia when iden-tifying potentially favourable volcanic terranes for hosting such deposits. 3.8 ACKNOWLEDGMENTS I am indebted to the management of Cyprus-Anvil Mining Corporation for f i e ld support during the course of this study, and for permission to publish propietory information on the MM deposit. Many persons contributed useful discussion and ideas to the study, including P.M. Dean and D.S. Jennings of Cyprus-Anvil Mining Corporation, D.J. Temp-leman-Kluit of the Geological Survey of Canada, J.A. Morin of the Depart-ment of Indian Affairs and Northern Development (Whitehorse), C. Lalonde of Newmont Exploration of Canada, Ltd;, and R.L. Armstrong, G.T. Nixon, I.J. Duncan, and R.R. Parrish of the Department of Geological Sciences, University of Brit ish Columbia. Geochemical and geochronological work was supported by grants from the Department of Indian Affairs and Northern Development (Whitehorse) and Cyprus-Anvil Mining Corporation. 3.9 REFERENCES Barker, D.S., 1977, Northern Trans-Pecos Province: introduction and comparison with the Kenyan Rift. Geol. Soc. Bul l . 88, pp. 1421-1427. Carne, R.C., 1979, Upper Devonian stratiform barite- lead-zinc-s i lver mineralization at Tom Claims, MacMillan Pass, Yukon Territory. Unpublished M.Sc. Thesis, University of Brit ish Columbia, 149 p. Chronic, F., 1979, Geology of the Guano-Guayes rare earth element-bearing skarn property, Pelly Mountains, Yukon Territory. Unpub-lished M.Sc. Thesis, University of Br it ish Columbia, 122 p. Colley, H. and Rice, CM. , 1978, Kuroko-type deoosits in Vanua Levu, F i j i . N. Z. J . Geol. Geophys. 21, pp. 277-285. Fox, J.S., 1979, Host-rock geochemistry and massive volcanogenic sulphide ores. Can. Inst. Min. Metal. 72^ , pp 127-134. - 52 -Gordey, S.P., 1977, Stratigraphy, structure, and tectonic evolution of the southern Pe l ly Mountains in the Indigo Lake area, Yukon Ter r i to ry . Unpublished Ph.D. Thesis, Queen's Univers i ty, 200 p. Gordey, S.P., 1979, Strat igraphy ; of southeastern Selwyn Basin in the Summit Lake area, Yukon Terr i tory and Northwest Te r r i t o r i e s . Geol. Surv. Can. Paper 79-1A, pp". 13-16. Hutchinson, R.W., 1973, Volcanogenic sulphide deposits and the i r metal-logenic s ign i f i cance. Ec. Geol. 68, pp. 1223-1246. Lydon, J.W., Lancaster, R.D., and Karkkainen, P., 1979, Genetic controls of Selwyn Basin s t rat i form barite/sphalerite/galena deposits: an invest igat ion of the dominant barium mineralogy of the Tea deposit, Yukon. Geol. Surv. Can. Paper 79-IB, pp. 223-229. MacDonald, R., Ba i ley , D.K., and Sutherland, D.S., 1970, Over-saturated peralkal ine glassy trachytes from Kenya. J . Pe t ro l . 11_, pp. 507-517. Morin, J.A., 1977, Ag-Pb-Zn mineral izat ion in the MM deposit and associated Miss iss ippian f e l s i c volcanic rocks in the St. Cyr Range, Pe l l y Mountains. Dept. Indian and Northern A f f a i r s , 1976 Mineral Inventory Report, pp. 83-97. Mwanang'onze, E.H.B., 1975, Some chemical character i s t i c s of rocks of the Birch Lake Mine, northern Manitoba. Univ. Manitoba Center for Precambrian Studies, 1975 Annual Report, pp. 133-142. Smith, C.L., 1978, Geological sett ing of Jason and Tom deposits, Mac-Mi l lan Pass area, eastern Yukon. Paper presented at 1978 Geoscience Forum, Whitehorse, Y.T., Dec. 3-5, 1978. Stauffer, M.R., Mukharjee, A . C , and Koo, J . , 1975, The Amisk Grouo: an Aphebian (.?) i s land arc deposit. Can. J . Earth S c i . 12, pp. 2012-2035. Tempelman-Kluit, D.J., 1977, Strat igraphic and structura l re lat ions between the Selwyn Basin, Pel ly-Cass iar Platform, and Yukon Cry s ta l l i ne Ter-rane in the Pe l ly Mountains, Yukon. Geol. Surv. Can. PaDer 77-1A, pp. 223-227. Tempelman-Kluit, D.J., 1979, Transported ca tac la s i te , ooh i o l i t e , and granodiorite in Yukon: evidence of arc-continent c o l l i s i o n . Geol. Surv. Can. Paper 79-14, 27 p. Tempelman-Kluit, D.J., Gordey, S.P., and Read, B.C., 1976, Strat igraphic and structural studies in the Pe l ly Mountains, Yukon Ter r i to ry . Geol. Surv. Can. Paper 76-IA, pp. 97-106. Winchester, J.A. and Floyd, P.A., 1977, Geochemical d iscr iminat ion of d i f fe rent magma series and the i r d i f f e ren t i a t i on products using immobile elements. Chem. Geol. 20, pp. 325-343. - 58 -CHAPTER 4  GENERAL SUMMARY AND CONCLUSIONS Detailed mapping in the central Pelly Mountains, Yukon Territory, has shown the geology to be divided into four separate thrust panels structurally stacked by three regionally extensive thrust faults. Polyphase deformation associated with varying degrees of metamorphism occurred during and after the thrust faulting. Upper Devonian and Mississippian strata occur within two of the thrust sheets, but the Mississippian volcanic rocks are confined to a single thrust unit. The presence of tectonized serpentinite bodies along one of the thrust surfaces suggests that the thrusting occurred within an imbricate zone beneath the Anvi1-Campbel1 Allochthon, a structurally higher slab of mafic and ultramafic rocks now preserved as rare klippen southwest of the study area. Upper Devonian and Mississippian strata in the map area include carbonaceous shales, fe l s i c volcanic rocks, and rare chert granule gr i ts. The shales and grits are correlative with a regional c last ic sequence to the north and east. The volcanic rocks are abundant within the map area, but are not regionally extensive. The geochemistry of the volcanic rocks is very dist inctive and suggests that they were generated within an extensional environment. This is compatible with recent tectonic syntheses for this region. Base metal deposits associated with the volcanic rocks are of a type previously thought to occur only in compressional , subduction-related setting. This emphasizes the need to re-examine some current ideas regarding the relationship between tectonic setting and the gen-eration of this type of ore deposit. - 59 -APPENDIX A GEOCHEMICAL ANALYSES FOR THE PELLY MOUNTAINS IGNEOUS SUITE CROUP TITLE-AND-REFERENCS SHEET CONTRIBUTOR 'S NAME CONTRIBUTION NUMBER CROUP TITLE (TOPICAL RESUME OF CROUP CONTENTS. 72 CHARACTERS ONLY) CROUP LOCATION (THE MOST NORTHEASTERLY SAMPLE SITE RECORDED ON ANY ~ SPECIMEN SHEET ATTACHED 70 THIS CROUP) LAT JTULE L0N2ITODE | yL DATA'SOURCES REF. NO. * 2 REFERENCE(S)•» uence Deposits \r\ cwuk Tcrcfonic S e t l i ^ erf C L . ' N Upper bev0*i*K - w A-iSocrid.'fe--' S ^ 5 « Mi-rc-i 5<?p y'n^on. 7err<^ /<x<j *. M . Test's Vancouver, 8 ^ -< Z"--1-. A N U M D E R I N T H E R A N G E 1 - 10. O Y U H I C K T H E R E F E R E N C E I S _ ALL S P E C I M E N S H E E T S A T T A C H E D T O T H I S C R O U P . ( C O N T I N U E S H E E T I F N E C E S S A R Y . ) TO E E C I T Cr-J B A C K P L E A S E USE C O - R E N T U©77> CEOL. S O C . A M E R . F O S - .AT. E.G. C O C O L O . E FT K R U M M E N A C H E R . O . . 1947. P K O D L E M c S C E O C H R . DANS L A P A R T I E NW C E L ' A N A T O L E C E N T R A L S I T U - O U I E ) : E C M I N E R A L . O. P E 1 R 0 C . f i lTT. . V . 47. P . S 2 5 - 8 3 I . ICMET CONTRIBUTOR'S NAME CONTRIBUTION NO. A. HEADINO INFORMATION ROCK NAME J^aj^CK^i LATITUDE AJ LONOITUDE CEOLOOIC UNIT Pexx.^ Mouwrft^ S REFERENCE NO. - K W e ^ u S S U I T E B ESSENTIAL OXIDES EI02 T102 AL203 FE203 FEO r.so CAO NA20 K20 p^o^ C02 H20* H20- TOTAL 0,o3 Q/OV 2&?) 0.00 0-0^ 0.^6 ^1 0.2? "14.44 TRACE ELEMENTS OR COMPONENTS NAME C r \J 1 AMOUNT /2- "Lo. (>Q a I** RFFERENCE 1 2 & . . 1C . . ID . . 2A . 2D . 2E . 2F . 2G . 2H . 21 NAME AMOUNT REFERENCE NAME AMOUNT REFERENCE 3 A STRATI GRAPHIC lA*»\ (C A ^ H A J I O . ' 3 3 ISOTOPIC OR PHYSICAL REFERENCE NO. . . 3C . . 3F . . 3G . . 3H . . 31 C . YEARS METHOD MATERIAL REF. NO. PETROCRAPHIC DESCRIPTORS C3> 4B 4C 4D 4E 4F 4G 4H 41 ERUPTIVE TYPE- MODE OF OCCURRENCE BN PYROCLASTIC BO RINC DIKE BP ROPY'LAVA AA NO INFORMATION BO SCORIA BR SECRECATION AB AA BS SILL AC ACCLOHERATE BT SPATTER AD ASH BU STOCK AE ASH FLOW BV SUBAERIAL AF BATHOLITH BU SUBAQUEOUS AC BLOCK LAVA BX SUBMARINE AH BOMB BY TEPHRA A l BOSS BZ TUFF A J BRECCIA CA TUFF BRECCIA AK CONE. SHEET CB VEIN AL D1ATREHE CC VOLCANIC AM DIKE (DYKE) CD VOLCANICLASTIC AN DOME CE WELDED TUFF AO EXTRUSIVE CF XENOLITH AP FLOW AO FLOW BRECCIA DP OTHER (ADD iti 1 AR HYALOCLASTITE A5 HYPABYSSAL TEXTURE. STRUCTURE AT ICNIMBRITE CRAIN SIZE AU INTRUSIVE AV INTRUSIVE (INTRUSION > DO NO INFORMATION BRECCIA * AU LACCOLITH DR AMYCDULAR AX LAPILLI DS APHANITIC AV LAVA DT APHYRIC AZ LAVA LAKE DU APL1TIC BA LAYERED INTRUSION DV BANDED BB LOPOLITH DU COARSE BC NECK DX CRYPTOCRYSTLN. BD NU6E ARDENTE DY CUMULATE BE NODULE DZ DEVITRIFIED BF PAHOEHOE EA DISCRYSTALLINE 80 PHACOLITH EB DOLER1TIC BH PILLOW LAVA EC EUCRYSTALLINE B l PIPE ED EOUICRANULAR BJ PLUO EF FELSITIC BK PLUTON EO FINE BL PLUTONIC EH CLASSY BM PUMICE CI FOLIATED &F Vl«A 0\e\\oY1\6t-uW\C &<j ? « V \ > i . ' i o v T M T p n \ c E J CLOMEROPORPH. CB VITREOUS EK CNEISSIC ec VITROPHYRIC EL GRANITIC CD XENOCRYSTIC EM CRANOPHYRIC EN CRANULIT1C HY OTHER (ADD IN EO CRAPHIC EP HOLOCRYSTALLINE STATE OF PRESERVAT EO HOLOHYALINE ER HYALINE IA NO INFORMATION ES HYALOPILITIC IB FRESH ET HYPOCRYSTALLINE IC ALTERED EU INTER3ERTAL ID SLICHTLY EV LAMPRDPHYRIC IE MODERATELY EW LINEATED /•"IF~> EXTENSIVELY EX MASSIVE EY MEDIUM I J OTHER (ADD IN 1 EZ MICROCRYSTALLINE FA HICROCRAPHIC TYPE OF ALTERATION FB MICROLITIC FC MICROPECMATITIC IK NO INFORMATION FD M1CROPOIKILITIC FE MICROPORPHYRITIC IL ARCILLITIC FF M1CROSPHERULITIC IM CHLORITIC FO MYRMEKITIC IN DEUTERIC FH OPHITIC 10 FENITIC FI ORBICULAR IP HYDRATED F J PECMATITIC 10 HYDROTHERMAL FK PERLITIC IR LEACHED FL PHANERITIC IS METAHORPHIC FM PILOTAXITIC IT HETASOMATIC FN PLATY :u OXIDATION FO POIKILITIC IV PALACONIT1C FP PORPHYRITIC IU PROPYLITIC FO PUMICEOUS IX PYRITIC FR RECRYSTALLIZED IY SAUSSURITIC FS SCHISTOSE IZ SERICITIC FT SCORIACEOUS r-3X~«ERPENTINlZED ^ B ' S I L I C I F I C A T I O N FU SERIATE FV SPHERULITIC JC SOLFATARIC FW SPINIFEX JD WEATHERED FX SUBOPHITIC FY TRACHYTIC J J OTHER (ADD IN 1 FZ VARIOLITIC OA VESICULAR - 61 -F. M I N E R A L ' A S S E H O L A C E NA NO I N F O R M A T I O N F E L D S P A R S . F O I D S K N D N E N F Nl NJ ovr N X F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M 1 C R 0 C L I N E M I C R O P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I D I N E A N T I T E R T H I T E O J K A T O P H O R I T E T S T O U R M A L I N E OK R I E B E C K I T E T T V E S U V I A N I T E O L S O D I C TVI Z E O L I T E ( S ) T V C H A B A Z I T E on A E N I C M A T I T E T U H E U L A N D I T E ON C O S S V R I T E T » L A U M O N T I T E 0 0 R H O N I T E T V N A T R O L I T E T Z P H I L L I P S I T E 0 9 O T H E R ( A D D I N B L O C K C> T t I I R C O N T 2 Z O I S I T E P Y R O X E N E S , P V R 0 X F N O 1 D S . O L I V I N E S AMPHIOOIOICS PA P» PC PD PE PF » 1 G3> M I C A B I O T I T E L E P 1 D 0 L I T E M U S C O V I T E P H V O C O P I T E S E R I C I T E . C H L O R I T E ' S E R P E N T I N E r f OTHER (ADD IN BLOCK 0) OA 3B OC OD <a» OC OF 00 OH 01 A H P H 1 B O L E B . A S A L T I C H N B L N D . C U M M I N O T O N I T E H O R N B L E N D E 5 > « r o j « S rVe A L K A L I A M P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E M A S T I N O S I T E K A E R 3 U T 1 T E RC RD O R T H O P Y R O X E N E B R O N Z I T C E N S T A T ] T E N L P L A O I O C L A S E R E H Y P E R S T H S N E NM N A - P L A C I O C L A S E NN I h T E R H C D . P L A O R F C L I N O P Y R O X E N E N O NP C A - P L A C I O C L A S E RC A U C I T E A L D I T E RM C I O P S I C E NO A L B I T E - O L I C O C L A S E R I O I O P S I D E - A U C I T E NR O L I C O C L A S E S J C H R O M E - D I O P S I D E N S O L I C O C L . - A N D E S N RK F E R R O A U C I T E N T A N D E S 1 N E R L H E D E N B E R O I T E N U A N D S N . - L B R D R T . RM ' H I C H - A L A U C I T E N V L A B R A D O R 1 T E R N P I C E O N I T E NU L D R P R T . - O V T W N T . RO S U B C A L C 1 C A U C I T E NX B Y T O V J N I T E RP T I T A N A U C I T E N V B Y T U N T . - A N O R T H I T E NZ ' A N O R T H I T E RO A L K A L I P Y R O X E N E RR A C H I T E N 9 O T H E R ( A D D IN B L O C K C> RS A C M I T E - D I O P S I O E R T A E C 1 R I N E O A F E L D S P A T H O I D RU A E O I R 1 N E — A U C I T E 0 9 A N A L C I ME RV A E C I R 1 H E - D 1 0 F S 1 D E O C C A N C R I N I T E RU O M P H A C I T E OD H A U ~ N E MX S O D I C O E K A L S I L I T E 0 = L E U C I I E RY P E C T O L I T E OO N 2 P H E L I N E RZ U O L L A S T O N I T E O H N O S E A N R I S P O D U M E N E 01 P S E U D O L E U C I T E O J S O D A L I T E R 9 O T H E R ( A D D I N B L O C K 0> 0 9 O T H E R ( A D D IN B L O C K 01 S A O L I V I N E SB F A Y A L I T I C P H Y L L 0 S I L 1 C A T E S . D G U O L C S C F O R S T E R I T I C C H A I N S I L I C A T E S . AND S D M C N T I C E L L 1 T E S 9 O T H E R ( A D O I N B L O C K C> O T H E R S I L I C A T E S T A T B T C T D T E T F T C T M T I T J T K T L TM T N T O T P T O TR A L L A N I T E A L U M I N O - S I L I C A T E S A N D A L U S I T E K Y A N I T E S I L L 1 M A N I T E B E R Y L C L A Y M I N E R A L ( S ) C O R D I E R I T E E P I D O T E OAR N E T A L M A N D I N C A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L I L I T E T I T A N I T E . S P H E N E T O P A Z T 9 O T H E R ( A D D I N B L O C K 0 ) U A US UC UD U C U F UO U H U I U J UK U L ur. U N uo UP uo UR U U uv uu ANATASE BROOK I T E C A S S I T E R I T t CORUNDUM H E M A T I T E I L M E N I T E L I M 0 N 1 T E P E R O V S K I T E P S E U D C B R O O K I T E R U T I L E S I L I C A C R O U P C R I S T O O A L I T E C R Y P T O C R Y S T . O U A R T Z T R t D Y M I T E S P I N E L C H R O M I T E H E R C Y M T E M A C H E M I T E M A G N E T I T E P L E O N A S T E T I T A N O H A C N E T 1 T E U L V 0 S P 1 N E L O P A O U E S . O R E S U 9 O T H E R ( A D D IN B L O C K 0 ) N O N - O X I D E S . N O N - S I L I C A T E S V A A P A T I T E V B C A R B O N A T E ( S J CS3' C A L C I T E vo D O L O M I T E V E S I O E R I T E V F . F L U O R I T C VO M O N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S 1 V I S U L F A T E ( S ) V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E CZ!£> P Y R R H O T I T C V 9 O T H E R ( A D D IN B L O C K 01 H 1 N E R A L 0 * OS UB UC U D WC C H L O R O P H A E I T E C L A S S I D D I N O S I T E L E U C O X E N E P A L A C O N I T E S I D E R O M C L A N E U 9 O T H E R ( A D D I N B L O C K 0 ) A D D I T I O N A L N O T E S Sample 5°° • 62 ' l- T \ C O N T R I B U T O R ' S NAME C O N T R I B U T I O N N O . A. H E A D I NO I N F O R M A T I O N R O C K N A M E L A T I T U D E (. I , L O N G I T U D E ( ^ z £ y -J-OAJCFOUS 5 a i r e 1 R E F E R E N C E N O . B E S S E N T I A L O X I D E S S 1 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO n c o C A O N A 2 0 K 2 0 P 2 0 3 C 0 2 H 2 0 * H 2 0 - T O T A L 41.1-1 a-ce f.64 00c? 3-75" 0.00 0«|0 0.(4 C. T R A C E E L E M E N T S OR C O M P O N E N T S N A M E A A O y A M O U N T 3} / l T l o / " f IT R F F E R E N C E 1A IB . 2A . 2D . 2E . 2F . 2G . 2H . 21 N A M E A M O U N T R E F E R E N C E N A M E A M O U N T R E F E R E N C E . 3A . 3B . 3C . 3D . 3F . 3G STF. A T I P R A P H I C l y W -I S O T O P 1 C OR P H Y S I C A L R E F E R E N C E N O . Y E A R S M E T H O D M A T E R I A L R E F , N O . 3H 31 E . . 4B . 4C .'4D . 4E . 4F . 4G . 4H . 41 P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E . M O D E O F O C C U R R E N C E A A N O I N F O R M A T I O N AB A A A C A C C L O M E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M E AM D I K E ( D Y K E ) A N DOME A O E X T R U S I V E A C F L O U A O F L O U B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E < I N T R U S I O N ) B R E C C I A A U L A C C O L I T H A X L A P I L L ! A Y L A V A A 2 L A V A L A K E B A L A Y E R E D I N T R U S I O N B B L O P O L 1 T H B C N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E BO P H A C O L I T H B H P I L L O W L A V A B I P I P E B J P L U S BK P L U T O N B L P L U T O N I C BM P U M I C E B N P Y R O C L A S T I C B O R I N O D I K E B P R O P Y * L A V A 6 0 S C O R I A B R S E C R E C A T I O N B S S I L L B T S P A T T E R B U S T O C K B V S U B A E R I A L B U S U B A Q U E O U S B X S U B M A R I N E B Y T E P H R A B 2 T U F F C A T U F F B R E C C I A C B V E I N C C V O L C A N I C C D V O L C A N I C L A S T I C C E W E L D E D T U F F C F X E N O L I T H D P O T H E R ( A D D I N B L O C K C > T E X T U R E . S T R U C T U R E .  C R A I N S I Z E D O N O I N F O R M A T I O N D R A M Y C D U L A R D S A P H A N I T I C D T A P H Y R I C D U A P L I T I C D V B A N D E D D U C O A R S E D X C R Y P T O C R Y S T L N . D Y C U M U L A T E D 2 D E V I T R I F I E D E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D E Q U I G R A N U L A R E F F E L S 1 T I C E O F I N E E H C L A S S Y E I F O L I A T E D & F V\WOV<\OV<\81-BU\C E J C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T I C E M G R A N O P H Y R r C E N O R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O H O L O H Y A L I N E E R H Y A L I N E E S H Y A L O P I L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R 1 C E U L I N E A T E D E X M A S S I V E E Y M E D I U M E 2 M I C R O C R Y S T A L L I N E F A M I C R D C R A P H I C F B M I C R O L I T I C F C M I C R O P E G H A T I T I C F D M I C R O P O I H I L I T I C F E M I C R O P O R P H Y R I T I C F F M I C R D S P H E R U L I T I C F 0 M Y R M E K I T 1 C F H O P H I T I C F I O R B I C U L A R F J P E G M A T I T I C F K P E R L 1 T 1 C F L P H A N E R I T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K 1 L I T I C F P P O R P H Y R I T I C F Q P U M I C E O U S F R R E C R Y S T A L L I 2 E D F S S C H I S T O S E F T S C O R 1 A C E O U S F U S E R I A T E F V S P H E R U L I T I C F U S P I N I F E X F X S U B O P H I T I C F Y T R A C H Y T I C F 2 V A R I O L I T I C C A V E S I C U L A R C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C HY O T H E R ( A D D I N B L O C K c) S T A T E O F P R E S E R V A T I O N IA NO I N F O R M A T I O N I B F R E S H I C A L T E R E D ID S L I O H T L Y I E M O D E R A T E L Y E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K c> T Y P E O F A L T E R A T I O N I K NO I N F O R M A T I O N I L A R G I L L I T I C IM C H L O R I T I C I N D E U T E R I C 10 F E N I T I C I P H Y D R A T E D 1 0 H Y D R O T H E R M A L IR L E A C H E D rfs^METAMORPHlC T T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R I T I C I Y S A U S S U R I T I C 12 S E R I C I T I C ( " O A J S E R P E N T I N I Z E D S B S I L 1 C I F I C A T I O N J C S D L F A T A R I C J D U E A T H E R E D J J O T H E R ( A O D I N B L O C K 0 ) JE C a r o o r\oA-\C •ze.o\\\\c - 63 -F. MINERAL ASSEHOLACE H A NO INFORMATION F E L D S P A R S . F O I D S N S F E L D S P A R NC A L K A L I F E L D S P A R N O A N O R T H O C L A S E N E K - F E L D S P A R N F M I C R O C L I N E ' NO n I C R O P E R T K I T E NH O R T H O C L A S E N l P 6 R T H I T E N J S A N ! D I N E NK A N T I P E R T H I T E •art NO NR NS .T NY P L A O I O C L A 3 E N A - P L A C 1 0 C L A S E l l . T C R H C D . P L A O . C A - P L A 0 1 O C L A S E A L D I T E A L B I T E - O L I C O C L A S E O L I C O C L A S E O L I C O C L . - A N D E S N . A N D E S I N E A N D S N - L B R O R T . L A B R A D O R I T E L O R P R T . - B Y T U N T B Y T O V J N I T E B Y T U N T . — A N O R T H I T E A N O R T H I T E N9 OTHER I ADD IN BLOCK C> O A F E L D E P A T H O I D OB A N A L C l H E O C C A N C R I N I T E OD H A U Y N E O C K A L S I L I T E 0= L E U C I I E OO N Z P H E L I N E O H N O S E A N 01 P S E U D O L E U C I T E cu S0DAL1TE 09 OTHER (ADD IN BLOCK 0) PHYLLDS(L TCATES. DGUDLE CHAIN SILICATES. AND  A.TPHIOO.OICS PA MICA PB BIOTITE PC LEPIDOLITE PD MUSCOVITE PE PHLOCOPITE PF SERICITE CHLORITE SERPENTINE P7 OTHER (ADD IN BLOCK 0) O A OB O C OD <5? O E O F 00 O H 01 A M P H I B O L E B A S A L T I C H N B L N D . C U r m 1 N O T O N I T E H O R N B L E N D E A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 3 U T I T E O J K A T O P H O R 1 T E TS T O U R M A L I N E OK R I E B E C K I T E TT V E S U V I A N I T E CH. S C D I C T V Z E O L I T E I S l T V C H A B A Z I T E O H AEN1CMATITE TU H E U L A N D I T E ON C O S S Y R I T E TX L A U M O N T I T E on R H O N I T E T Y N A T R O L I T E T Z P H I L L I P S I T E 09 O T H E R ( A D D I N B L O C K 0) T I Z I R C O N T2 Z O I S I T E P Y R O X E N E S . P Y R 0 X E N 0 1 D S .  O L I V I N E S T9 OTHER (ADD IN BLOCK Cl RA PYROXENE OXIDES RB ORTHOPYROXENE UA ANATASE RC BRONZITE U3 BROOK ITE RD ENSTATITE UC CACSITER1TE RE HYPERS THE NF. UD CORUNDUM UE HEMATITE RF CLINOPYROXENE UF ILMENITE RC AUCITE UV LIMONITE RH DI0PS1DE UH PEROVSKITE RI DIOPSICE-AUCITE UI PSEUDCOROOKITE RJ CHROME-DIOPS 1DE UJ RUTILE RK TERROAUCITE RL HEDENDERCITE SILICA CROUP RM HICH-AL AUCITE UK CRISTODALITE RN PICE0N1TE UL CRYPTOCRYST. RO SUBCALCIC AUCITE UM OUARTZ RP TITANAUCITE UN TRIDYHITE RO ALKALI PYROXENE UO SPINEL RR ACMITE UP CHROMITE RS ACHITE-DIOPSIDE UO HERCYMTE RT AECIR1NE UR MACHEM 1TE RU AEOIR:N£-AUC:-E MACNETITE RV AEC1RINE-DI0PSIDE ^ - 0 T J PLEONASTE RU OMPHACITE UU TITANOHACNETITE RX SOSIC UV ULVOSPINEL U * UU OPAOUES. ORES RV PECTOLITE RZ UOLLASTONITE U9 OTHER (ADD IN BLOCK C) Rl SPODUMENE NON-OXIDES. NON-SILICATES R9 OTHER (ADD IN BLOCK 0) VA APATITE SA OLIVINE VB CARBONATE(S) SB FATAL 1TIC CALCITE SC FORSTERITIC DOLOMITE SD MONT ICELL ITE VE SIDERITE VF FLUOR ITE S9 OTHER (ADD IN BLOCK 0) VO MONAZITE UU OPAOUES. ORES OTHER SILICATES VH NATIVE ELEMENT(S> VI SULFATE(S) TA ALLANITE VJ SULFIDE(S) ALUMIN0-SIL1CATES CHALCOPYRITE TD AN DAL US I TE PVRITE TC KVANITE PYRRHOT1TE TD SILLIMANITE TE BERYL V9 OTHER (ADD IN BLOCK 01 TF CLAY MIN3RAL(S) TC C0RD1ERITE MINERALOIDS TH EPIDOTE TI OAR NET UA CHLOROPHAEITE TJ ALMANDINC UB CLASS TK ANDRADITE UC IDDINOSITE TL CROSSULAR UD LEUCOXENE TM MELANITE UE PALACONITE TN PYROPE UP 6IDER0MELANE TO SPESSARTINE TP HEL1L1TE U9 OTHER (ADD IN BLOCK 0) TO TITANITE. SPHEN6 TR TOPAZ p i CO O. ADDITIONAL NOTES C O N T R I B U T O R ' S NAME C O N T R I B U T I O N NO. 'AD I NO I N F O R M A T I O N (~) sji A * _ ROCK N A M E A ( | E F ^ JV^ -RC CE"°0IC UN,TFL^ H o U ^ l N ^ LATITUDE £(.44«*J J,^AJSOU.S S a i T t LOCATION REFERENCE NO. L O N C , T U D E / U I g E S S E N T I A L O X I D E S S I 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O M N O M S O C A O N A 2 0 H 2 0 P 2 0 5 C 0 2 M 2 0 * H 2 0 - T O T A L 3*81 0-04 33* o n fl.OO 0'O| 0,0* 032 C. T R A C E E L E M E N T S OR C O M P O N E N T S . . 1A . . IB . . ID 2A N A M E Cr AMOUNT 21 0 . 0 2 f /z R F F E R E N C E N A M E AMOUNT R E F E R E N C E 2E 2F 2G 2H 21 N A M E AMOUNT R E F E R E N C E . 3A E T F . A T i c R A P H i c -{t\y\ (firm U J I - \ . 3B I S O T O P I C OR P H Y S I C A L R E F E R E N C E NO. 3C 3D <r§s> . 3F . 3G . 3H . 31 E . P E T R O C R A P H I C D E S C R I P T O R S Y E A R S M E T H O D M A T E R I A L R E F . NO. C3P E R U P T I V E T Y P E . BN P Y R O C L A S T I C E J C L O M E R O P O R P H . C B V I T R E O U S MODE O F O C C U R R E N C E BO R I N S D I K E E K C N E I S S I C CC V I T R O P H Y R I C B P R O P Y " L A V A E L C R A N I T I C C D X E N O C R Y S T I C AA NO I N F O R M A T I O N BQ S C O R I A EM C R A N O P H Y R rC BR S E G R E G A T I O N E N C R A N U L I T I C H Y O T H E R ( A D D I N B L O C K AB AA B S S I L L E O C R A P H I C AC A C C L O M E R A T E BT S P A T T E R E P H O L O C R Y S T A L L I N E S T A T E O F P R E S E R V A T I O N A D A S H B U S T O C K E Q H O L O H Y A L I N E A E A S H F L O U B V S U B A E R I A L ER H Y A L I N E I A NO I N F O R M A T I O N A F B A T H O L I T H B U S U B A O U E O U S E S H Y A L O P I L I T I C I B F R E S H AC B L O C K L A V A BX S U B M A R I N E • E T H Y P O C R Y S T A L L I N E I C A L T E R E D AH BOMB BY T E P H R A E U I N T E R 3 E R T A L I D S L I C H T L Y A l B O S S BZ T U F F E V L A M P R O P H Y R I C I E M O D E R A T E L Y AO B R E C C I A C A T U F F B R E C C I A EU L I N E A T E D CTF> E X T E N S I V E L Y AK C O N E S H E E T CB V E I N EX M A S S I V E AL D I A T R E M E CC V O L C A N I C EY M E D I U M IJ O T H E R (ADD IN B L O C K AM D I K E ( D Y K E ) C D V O L C A N I C L A S T I C EZ M I C R O C R Y S T A L L I N E AN DOME CE U E L D E D T U F F FA M I C R O C R A P H I C T Y P E O F A L T E R A T I O N AO E X T R U S I V E CF X E N O L I T H F B M I C R O L I T I C AP F L O U O T H E R ( A D D I°N B L O C K C) F C M I C R O P E C M A T I T I C IK NO I N F O R M A T I O N AO F L O U B R E C C I A DP F D M I C R O P O I K I L I T I C AR H Y A L O C L A S T I T E F E M I C R O P O R P H Y R 1 T I C I L A R C I L L I T I C AS H Y P A B Y S S A L T E X T U R E , S T R U C T U R E . F F M I C R O S P H E R U L I T I C IM C H L O R I T 1 C A T I C N I M B R I T E C R A I N S I Z E F O M Y R M E K I T I C IN D E U T E R I C A U I N T R U S I V E F H O P H I T I C IO F E N I T I C AV I N T R U S I V E ( I N T R U S I O N ) DO NO I N F O R M A T I O N F I ORB I C U L A R IP H Y D R A T E D B R E C C I A • F J P E C M A T I T I C 1 0 H Y D R O T H E R M A L AU L A C C O L I T H DR A M Y C D U L A R F K P E R L I T I C IB L E A C H E D fH) M E T A M O R P H I C AX L A P I L L I DS A P H A N I T I C F L P H A N E R I T 1 C AY L A V A DT A P H Y R I C F M P I L O T A X I T I C I T M E T A S O M A T I C AZ L A V A L A K E DU A P L 1 T I C F N P L A T Y I U O X I D A T I O N BA L A Y E R E D I N T R U S I O N DV B A N D E D F O P O I K I L I T I C I V P A L A C O N 1 T I C BB L O P O L I T H D U C O A R S E F P P O R P H Y R I T I C IU P R O P Y L I T 1 C BC N E C K DX C R Y P T O C R Y S T L N . F Q P U M I C E O U S IX P Y R I T I C B D N U E E A R D E N T E DY C U M U L A T E F R R E C R Y S T A L L I Z E D I Y S A U S S U R I T I C BE N O D U L E DZ D E V I T R I F I E D F S S C H I S T O S E I Z S E R I C 1 T I C BF P A H O E H O E E A D I S C R Y S T A L L I N E F T S C O R I A C E O U S /JANSERPENTINIZED BC P H A C O L I T H E B D O L E R I T I C F U S E R I A T E T J t T S I L I C I F I C A T I O N BH P I L L O U L A V A E C E U C R Y S T A L L I N E F V S P H E R U L I T I C J C S O L F A T A R I C 81 P I P E E D E O U I C R A N U L A R FU S P I N I F E X J D U E A T H E R E D B J P L U C E F F E L S I T I C F X S U B O P H I T I C BK P L U T O N EO F I N E FY T R A C H Y T I C J J O T H E R ( A D D I N B L O C K B L P L U T O N I C EH C L A S S Y FZ V A R I O L I T I C BM P U M I C E E I F O L I A T E D CA V E S I C U L A R ';• GE eu.W>-rtC • j E carljonaVit • &F VHA -><iUor-\»fv,lAt - j c pr>e.V.Yi\V\C &0 porti l A m m i t ' - j V t c j c , 2eo \ ; V \ c - 65 -F. MINERAL ASSEMBLAGE NA NO INFORMATION FELDSPARS, FOIDS NI FELDSPAR NC ALKALI FELDSPAR NO ANORTHOCLASE NE K-FELDSPAR NF M1CROCL1NE ' NS M1CRCPERTHITE NH ORTHOCLASE NI PERTHITE NJ SANTO!NE OK NM ^ANTIPERTMITE N*_ PLACIOCLA3E NM NA-PLAC13CLASE NS 1UTERMCD PLAO. NO CA-PLACIOCLASE NP AL3I1F NQ AI.BITE-OLICOCLASE NR OLlCCCLASE NS OL! -OCL -ANDESN. NT ANDES1NE NU AHDSN —L8RDRT. NV L»»( tADO»ITE NU IBRDRT. -OYTUNT NI BYTOvJNITE NY BYTUNT. -ANORTMITE NZ ANONTH1TE NT OTHER (ADD IN BLOCK SI OA OB OC OD OE o* OO OH 01 OJ FELDSPATHOID ANALCIHE CANCRINITC HAUYKE KALSILITC LEUCITE NIPMEL1NE NOSE AN PSEU0OLEUC1TE E03ALITE O* OTHER (ADD IN BLOCK 0) PHYLLOSILICATES. DCUDLE CHAIN SILICATES. ANO AMPHIOO-OI'S PA PI PC PD PE PF » 1 PQ C5P MICA BIOTITE LEPIDOLITE MUSCOVITE PHLOCOPITE SERICITE. CHLORI TE SERPENTINE P» OTHER <ADD IN BLOCK 0) OA AMPHIIOLC 01 BASALTIC HNBLND. oc CUMMINOTONITE OD HORNBLENDE Q9 OC ALKALI AMPHIBOLC OF ARFVEDS0N1TE 0-0 IARKEVIK]TE OH HASTINCSITC 01 KAER5UTITC OJ OK OL on ON 00 KATOPHGH I TE R1EBCCKITE SODIC AENICMATI TE COSSYR ITE RHONITC 09 OTHER I ADD IN BLOCK C) PYR0XCT4ES. PYROrFNOIDS. OLIV INES R9 OTHER (ADD IN BLOCK 01 TS TOURMALINE TT VESUVIANITE TU 2E0LITEIS> TV CHABAZITE TW HEULANDITE TX LAUMONTITE TY NATROLITE TZ PHILLIPSITE T l ZIRCON T2 ZOISITE TV OTHER (ADD IN BLOCK C> RA PYROXENE OXIDES RB ORTHOPYROXENE UA ANATASE RC BRONZ1TE U3 IPOOKITE RO ENSTATITE UC CASSITER1TE RE HYPERSTHENE UO CORUNDUM UE HEMATITE RF CLINOPYROIENE UF ILMENITE RC AUC1Tt UO LIMONITC RH DI0PS1DE UH PEROVSMTE Rl DIOPSIDE-AUCITE UI PSEUDC3ROOKITE RJ CHROME—DIOPS 1DE UJ RUTILE RK TEIROAUCITE RL MEDENOERCITE SILICA CROUP KM MICM-AL AUC1TE UH CRISTOBALI TE' RN PIOEONITE UL CRYPTOCRYST. RO SUBCALCIC AUCITE UM OUARTZ RP TITANAUCITE UN TRIDYHITE RO ALKALI PYROXENE UO SPINEL RR ACMITE UP CHROHITE RS ACMITE-DIOPSIOE UO MERCYNITE RT AECIR1NE UR MACHEMITE RU AEOIRINE-AUCI-E MACNETITE RV AEClRINE-DIOrsIDE UT PLEONASTE RU OMPHACITE uu TITANOMACNETITE R> SODIC uv ULVOSPINEL u x uu OPAQUES. ORES RY PECTOLITE RZ UOLLASTONITE U9 OTHER (ADD IN BLOCK 0) Rl SPODUHCNE N O N - O X I D E S . N O N - S I L I C A T E S * VA APATITE OLIVINE VI CARBONATE(S1 FAYALITIC VC CALCITC SC POPSTER ITIC VO DOLOMITE SO MCNTI CELL I TE VE VF . SISERITE FLUOR ITC S* OTHER (ADD IN BLOCK 01 VO MONAZITE uu CPAOUES. ORES OTHER SILICATES VH VI NATIVE ELEMENT (SI SULFATE(SI TA ALL AN I TE V J SULFIDE(SI ALUMIN0-SIL1CATES VK CHALCOPYRITE T l ANDALUS1TE VL PYRITE TC KYANITE PYRRH0T1TE TO S ILL 1 MAN I TE TC BERYL v? i: •CR (ADD IN BLOCK 0) TF CLAY MINERALt S> TC C0RD1ERITC MINER* .OIOS TH EPIDOTC TI OARNET UA CHLOROPHAEtTE T J ALMANDINE U l CLASS TK ANDRAOITC UC 1DDINCSITC TL ' CROSSULAR UD LEUCOIENE TM MELAN ITE we PALACCNITC TN PYROPE UF SIDEROMELANE TO SPESSARTINE TR MELILITE W» OTHER (ADD IN BLOCK 01 TO TI TAN!TE. SPHENE TH TOPAI 0. ADDITIONAL NOTES - 66 - N T S ' / h * ' CONTRIBUTOR'0 NAME CONTRIBUTION NO. A. HEAP1N0 INFORMATION ROCK NAME •ORMAT ION l l \ /- «-LATITUDE LI.44" U ION O M . - T • " LONOITUDE , _ . , C E O L O O I C U N I T P E ( J L .U (Mo U A/T/^l MS -/-<} f\Jc3D I Surn= 1 REFERENCE NO. B ESSENTIAL OXIDES S102 T102 AL203 FE203 FED MNO MOO CAO NA20 K20 P203 C02 H20» H20- TOTAL 3o.|« If. 12- If V) 013 1*41 o.co 0.03 0.ZI ioo.-f? C. TRACE ELEMENTS OR COMPONENTS N A M E O \J AMOUf.'T 1 Q /2t1 °\ i f02_ R F F E R E N C E 1 NAME AMOUNT | REFERENCE 1 NAME AMOUNT REFERENCE . 3A . 3B . 3C . 3D 3F 3G 3H 31 c. 6TEATICRAPHIC U-VV K ACJLO f"\ ISOTOPIC OR PHYSICAL REFERENCE NO. YEARS METHOD MATERIAL REF, NO. . 4B . 4C .'4D . 4E . 4F . 4G . 4H . 41 PETROCRAPH1C DESCRIPTORS ERUPTIVE TYPE. MODE OF OCCURRENCE AA NO INFORMATION AB AA AC ACCLOMERATE AD ASH AE ASH FLOW AF BATHOLITH AC BLOCK LAVA AH BOMB AI BOSS A J BRECCIA AK CONE SHEET AL DIATREME AM DIKE (DYKE) AN DOME AO EXTRUSIVE AP FLOW AO FLOW BRECCIA AR HYALOCLASTITE AS HYPABYSSAL AT ICNIMBRITE AU INTRUSIVE AV INTRUSIVE (INTRUSION) BRECCIA AW LACCOLITH AX L A P I L L I AY LAVA AZ LAVA LAKE BA LAYERED INTRUSION BB LOPOL1TX BC NECK BD NUEE ARDENTE BE NODULE BF PAHOEHOE BC PHACOLITH BH PILLOW LAVA B l P IPE B J PLUS BK PLUTON BL PLUTONIC BM PUMICE BN PYROCLASTIC BO RIN0 DIKE BP ROPY* LAVA SO SCORIA BR SECRECATION BS S I L L BT SPATTER BU STOCK BV SUBAERIAL BU SUBAQUEOUS BX SUBMARINE BY TEPHRA BZ TUFF ' CA TUFF BRECCIA CB VEIN CC VOLCANIC CD VOLCANICLASTIC CE WELDED TUFF CF XENOLITH DP OTHER (ADD (>i BLOCK C) TEXTURE. STRUCTURE.  CRAIN SI7E DO NO INFORMATION DR AMYCDULAR DS APHANITIC DT APHYRIC DU APLIT IC DV BANDED DW COARSE DX CRYPTOCRYSTLN. DY CUMULATE DZ DEV1TRIFIED EA DISCRYSTALLINE EB DOLERITIC EC EUCRYSTALLINE ED EQUICRANULAR EF F E L S I T I C EO FINE EH CLASSY EI FOLIATED GE euAucY.vV'ic GF V\M^  CM ^\0YA©»-toU\ C y»Yy\<k.\oYr\<vpk'ic E J CLOMEROPORPH. EK CNEISSIC EL CRANITIC EM CRANOPHYRrC EN CRANULITIC EO GRAPHIC EP HOLOCRYSTALLINE EO HOLDHYALINE ER HYALINE ES HYALOP1L1TIC ET HYPOCRYSTALL1NE EU INTER3ERTAL EV LAMPRCPHYRIC EU LINEATED EX MASSIVE EY MEDIUM EZ MICROCRYSTALLINE FA MICROCRAPHIC FB MICROLITIC FC MICROPECMAT1TIC FD MICROPOIKILITIC FE MICROPOSPHYRITIC FF MICROSPHERULITIC FO MYRMEKITIC FH OPHITIC FI ORBICULAR F J PECMATITIC FK PERLIT1C FL PHANERIT1C FM PILOTAXITIC FN PLATY FO P01K1LITIC FP PORPHYRITIC FO PUMICEOUS FR RECRYSTALLI ZED FS SCHISTOSE FT SCORIACEOUS FU SERIATE FV SPHERULITIC FW SPINIFEX FX SUBOPHITIC FY TRACHYTIC FZ VARIOLITIC OA VESICULAR CB VITREOUS CC VITROPHYRIC CD XENOCRYSTIC HY OTHER (ADD IN BLOCK C) STATE OF PRESERVATION IA NO INFORMATION IB FRESH IC ALTERED ID SLICHTLY MGDERATELY IF^) EXTENSIVELY I J OTHER (ADD IN BLOCK C) TYPE OF ALTERATION IK NO INFORMATION IL ARCILL IT IC IM CHLORITIC IN DEUTERIC 10 FENIT IC IP HYDRATED 10 HYDROTHERMAL IR LEACHED CisSnETAMORPHIC IT METASOMATIC IU OXIDATION IV PALACONITIC IU PROPYLITIC IX PYRITIC IY SAUSSURIT1C 12 SER1CIT1C £j7)S£RPENT-INIZED ^ » S IL1CIF ICAT10N JC SOLFATAR IC JD UEATHERED J J OTHER (ADD IN BLOCK 0) JF pi^cV,r\ V V i c . i £ o \ ; V \ c - 67 -K. M I N E R A L A S S E M O L A C E NA NO I N F O R M A T I O N F E L D S P A R S . F O I D S NB F E L D S P A R NC A L K A L I F E L D S P A R ND A N O R T H O C L A S E N E K - F E L D S P A R N F M I C R O C L I N E NC M I C R O P E R T K I T E NM O R T H O C L A S E M l P E R T H I T E N J S A N ! D I N E OK NK A N T I P E R T H I T E N L P L A C I 0 C L A 3 E NM N A - P L A C I O C L A S E NN I N T E R M C D . P L A O . NO C A - P L A C I O C L A S E NP A L B 1 T E NO A L B I T E — O L I C O C L A S E NR O L I C O C L A S E NS O L I C O C L . - A N D E S N . NT A N D E S 1 N E ' NU A N D S H - L 3 R 0 R T . NV L A B R A D O R I T E •At L B R D R T . - B Y T U N T . N l B Y T O W N I T E •;v B Y T U N T . - A N O R T H I T E :1 A N O R T H I T E V ? O T H E R ( A D D IN B L O C K 0 ) 3 A F E L D S P A T H O I D IB A N A L C 1 M E X C A N C R I N I T E DD H A U Y N E O E K A L S I L I T E OF L E U C 1 T E OO N E P H E L I N E O H N O S E A N O I P S E U D O L E U C I T E O J S O D A L I T E 0 9 O T H E R ( A D O IN B L O C K 0 ) P H Y I L O S I L 1 C A T E S . . D O U B L E C H A I N S I L I C A T E S ,  A M P H l l T O - O I C S P A P B P C P D P £ P F » X C?5> M I C A B I O T I T E L E P 1 D 0 L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E ^ATA (^0nrV*z C H L O R I T E S E R P E N T I N E ft O T H E R ( A D D I N B L O C K 01 O A 9B oc OD Q f O E O F 00 O H at A H P H I B O L E B A S A L T I C H N B L N D . C U M M I N O T O N I T E HORNBLENDE P « Y « ) R J l + e A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E H A E R 3 U T I T E O J OK O L 0*1 ON 0 0 K A T O P H O R I T E R I E B E C K I T E S O D I C A E N I C M A T I T E C O S S Y R I T E R H O N I T E 0 9 O T H E R ( A D D I N B L O C K C ) P Y R O X E N E S . P Y R O X E N O I D S .  O L I V I N E S RA P Y R O X E N E RB O R T H O P Y R O X E N E RC B R O N Z I T E RD E N S T A T 1 T E R E H Y P E R S T H E N E RF C L I N O P Y R O X E N E RC A U C I T E RH D I O P S I D E RI D I O P S I D E - A U C I T E R J C H R 0 N E - D I 0 P S 1 D E RH F E S R O A U C I T E H L H E D E N O E R C I T E RM H I C l J - A L A U C I T E 9 N P I C E 0 N 1 T E RO S U B C A L C I C A U C I T E RP T I T A N A U C I T E RO A L K A L I P Y R O X E N E RR A C M I T E RS A C M 1 T E - D I 0 P S I D E RT A E C I R I N E RU A E C I R * N E — A U C I T E RV A E C 1 R I N E — 0 1 0 F S I D E RU O H P H A C I T E RX S O D I C RY P E C T O L I T E RZ U O L L A S T O N I T E R l S P O D U M E N E R 9 O T H E R IArD I N B L O C K 0) S A O L I V I N E S B F A Y A L I T I C S C F O R S T E R I T I C S O M C N T 1 C E L L I T E S 9 O T H E R ( A D O I N B L O C K C l O T H F R S I L I C A T E S T A A L L A N I T E A L U M I N O - S I L I C A T E S T B A N D A L U S I T E T C K Y A N I T E T D S I L L I M A N I T E T E B E R Y L T F C L A Y M I N E R A L ! S ) T C C O R D I E R I T E T H E P I D O T E T I O A R N E T T J A L M A N D I N E TK A N D R A D I T E T L C R O S S U L A R TM M E L A N 1 T E T N P Y R O P E T O 6 P E S S A P T I N E T P M E L I L I T E T O T I T A N I T E . S P H E N E TR T O P A Z 1 9 T O U R M A L I N E T T V E S U V I A N I T E T U Z E O L I T E ( S ) T V C H A B A Z I T E T U H E U L A N D 1 T E TX L A U M O N T 1 T E T Y N A T R O L I T E T Z P H I L L I P S I T E T I Z I R C O N T 2 Z O I S I T E T 9 O T H E R ( A D D IN B L O C K C l U A UO UC UD U E U F UV U H U I U J UK U L UM U N UO UP UO UR uu uv uu A N A T A S E B R O O K I T E C A S S I T E R I T E C O R U N D U M H E M A T I T E I L M E N I T E L 1 H 0 N I T E P E R O V S K I T E P S E U D C B R O O K I T E R U T I L E S I L I C A CROUP C R I S T O B A L I T E C R Y P T O C R Y S T . Q U A R T Z T R I D Y M I T E S P I N E L C H R O M I T E H E R C Y M T E M A C H E M I T E M A C N E T 1 T E P L E O N A S T E T 1 T A N O M A C N E T I T E U L V 0 S P 1 N E L WJ< p ' C o O P A O U E S , O R E S U 9 O T H E R I A D D IN B L O C K 0) N O N - O X I D E S . N O N - S I L I C A T E S V A A P A T I T E V B C A R B O N A T E ( S ) V C C A L C I T E V D D O L O M I T E V E S 1 D E R I T E V F F L U O R I T E V C M O N A Z I T E UU O P A Q U E S . O R E S V H N A T I V E E L E M E N T ( S 1 V I S U L F A T E ( S I V J S U L F I D E ( S ) V H C H A L C O P Y R I T E V L P Y R I T E C3?D P Y R R H O T I T E V 9 O T H E f l ( A D D IN B L O C K C ) H I N C R A L O I D S U B UC U D ue up C H U O R O P H A E I T E C L A S S I D D I N O S I T E L E U C O X E N E P A L A C O N I T E 6 1 D E R O M E L A N E U 9 O T H E R ( A D D I N B L O C K 0 ) C. A D D I T I O N A L N O T E S - 68 -NTS j jVO | C O N T R I B U T O R ' S NAr tE C O N T R I B U T I O N NO. A; H E A D I N S I N F O R M A T I O N R O C K N A M E 4 r-rf.ch ftf L A T I T U D E Q t£Qt fj L O N C I T U D C l n ^ 0 ^ J CEOLOOIC U N i T ^ p £ U J l 3 M c v . f O T 4 i i O R E F E R E N C E NO. ^ 8 ESSENTIAL OXIDES S 1 0 2 T 1 D 2 A L 2 0 3 F E 2 0 3 ! F E O riNO MOO C A O N A 2 0 K 2 0 P 2 0 3 C 0 2 H 2 0 * H 2 0 - [ T O T A L 61-88 A HI 018 oh £.o3 OQ8 O-OO T R A C E E L E M E N T S OR C O M P O N E N T S N A M E K/i 1 O r 1 W 5 r fa Y AMOUNT (O | 0 | 4 f f R F F E R E N C E 1 i • 1 N A M E I 1 AMOUNT 1 R E F E R E N C E j 1 I NAME | — AMOUNT R E F E R E N C E D. APE 3A 3B 3C 3D . 3F .3G . 3H . 31 E. I S O T O P 1 C OR P H Y S I C A L Y E A R S I M E T H O D M A T E R I A L R E F . NO. i P E T R O C R A P H I C D E S C R I P T O R S . 4B . 4C . 4D . 4E . 4F . 4G . 4H . 41 E R U P T I V E T Y P E . . MODE OF O C C U R R E N C E A A NO I N F O R M A T I O N AB A A A C A C C L O H E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A I B O S S A J B R E C C I A A K C O N E S H E E T A L D 1 A T R E M E AM D I K E ( D Y K E ) A N DOME A O E X T R U S I V E < S>LOU AO. F L O U B R E C C I A AR H Y A L O C L A S T I T E A S M Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A 2 L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H B C N E C K BD N U E E A f l D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L I T H BH P I L L O W L A V A B l P I P E B J P L U C BK P L U T O N B L P L U T O N I C Bn P U M I C E . B N P Y R O C L A S T I C BO R I N C D I K E B P R O P Y - L A V A BO S C O R I A BR S E C R E C A T I ON BS S I L L BT S P A T T E R B U S T O C K BV S U B A E R I A L B U S U B A O U E O U S BX S U B M A R I N E B Y T E P H R A B 2 T U F F C A T U F F • B R E C C I A C B V E I N C C V O L C A N I C C D V O L C A N I C L A S T I C C E W E L D E D T U F F C F X E N O L I T H DP O T H E R ( A D D (N B L O C K C ) T E X T U R E . S T R U C T U R E .  CR AIN S I Z E DO NO I N F O R M A T I O N DR A M Y C D U L A R DS A P H A N I T I C D T A P H Y R I C D U A P L I T I C OV B A N D E D DU C O A R S E DX C R Y P T O C R Y S T L N . DY C U M U L A T E DZ D E V I T R I F I ED E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D EOU1 G R A N U L A R #F E L S I T I C F I N E C L A S S Y E I F O L I A T E D & F V\w. 0 \^ \o to \o * - » K l c p«in'vA\omtrph\c E J C L O M E R O P O R P H . E K C N E I 5 S I C E L C R A N I T I C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P I L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E K 3 E R T A L E V L A H P R O P H Y R I C E U L I N E A T E D E X M A S S I V E E Y M E D I U M E Z H I C R O C R Y S T A L L I N E F A H I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K 1 L I T 1 C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E S M A T I T 1 C F K P E R L I T 1 C F L P H A N E R I T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K I L I T I C F P P O R P H Y R I T I C F O P U M I C E O U S F R R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T I C F U S P I N I F E X F X S U B O P H I T I C ( J j f T R A C H Y T I C F Z V A R I O L 1 T I C C A V E S I C U L A R C B V I T R E O U S CC V I T R O P H Y R I C C D X E N O C R Y S T I C HY O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N IB F R E S H I C A L T E R E D (Tj£) S L I C H T L Y I E M O D E R A T E L Y I F E X T E N S I V E L Y I J O T H E R ( A D D IN B L O C K C> T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C I H C H L O R I T 1 C I N D E U T E R I C 1 0 F E N I T I C IP H Y O R A T E D 1 0 H Y D R O T H E R M A L IR L E A C H E D CJ5>1E T AMOR P H I C I T M E T A S 3 M A T 1 C i U O X I D A T I O N I V P A L A C O N I T I C IW P R O P Y L 1 T I C IX P Y R I T 1 C I Y S A U S S U R I T I C 1 2 S E R I C 1 T 1 C J A S E R P E N T 1 N 1 Z E D J B S I L I C I F I C A T I D N J C S O L F A T A R I C ^ J j ? ) W E A T H E R E D J J O T H E R ( A D D I N B L O C K 01 OE J c C » f \ i o na-V\c_ zeo \ i V\c - 69 -F. HINERAL ASSEMBLAGE NA NO INFORMATION FELDSPARS, F01DS NB ND NE NF NC NM FELDSPAR ALKALI FELDSPAR ANORTHCCLASE K-FELDSPAR MICROCLINE MICROPERTHITE ORTHOCLASE 09 OTHER (ADD IN BLOCK 01 PHYLLOSILICATES. DOUBLE CHAIN SILICATES, AND AflpMIDOLCICS PA PC PD PE PF » 1 PO PH ' MICA BIOTITE LEPIDOLITE MUSCOVITE PHL0C0P1TE SERICITE fATwe^ ffn rY« CHLORITE • SERPENTINE P9 OTHER (ADD IN BLOCK 01 OA OB OC OD Qf OE OF 00 OH 01 AMPHIBOLE BASALTIC HNBLND. CVMMINOTONITE HORNBLENDE ALKALI AMPHtBOLE ARFVEDSONITE BARKEVIKITE HASTINCSITE KAER3UT1TE OJ . OL OM ON on KATOPHORITE RIEBECKITE SCDIC AEN1CMATITE C0SSYR1TE RMONITE 09 OTHER (ADD IN BLOCK 0) PYROXENES. PYROIFNOIDS.  OLIVINES NI PERTH1TE RA NJ SAN!DINE OK RB NK ANTIPERTHITE RC RD NL PLACI0CLA3E RE -SP NA-PLACIOCLASE Il.TCRMED. PLAC. RF NO CA-PLACFOCLASE RC NP AL D1TE RH NO Al.B 1TE-OLICOCLASE RI NR OLlCCCLASE RJ NS OLICOCL. —ANDESN. RK NT ANDESINE RL NU ANDSN -LBRDRT. HM NV LABRADOR ITE RN NU LGRPRT. -BYTUNT RO NX BYT0UN1TE RP NV BYTUNT. -ANORTHITE NI AN0RTH1TE RO RR N9 OTHER (ADD IN BLOCK 0) RS RT OA FELDSPATH01D RU OB ANALC1ME DV OC CANCRINITE PU OD HAUYNE RX OE KALSILITE 0 « LEUCITE RY OS NIPHELINE RZ OM NOSEAN Rl 01 PSEUD0LEUC1TE OJ SODALITE R9 PYROXENE ORTHOPYROXENE 8ROMZ1TE ENSTAT1TE HYPERSTHZNE CLINOPYROXENE AUCITt DICSIDE -:OPSIDE-AUC!TE CHR0ME-DI0HS1DE FERROAUCITE HEOENOERCITE HICM-AL AUC1TE PICEONITE SUBCALCIC AUCITE TITAHAUCITE ALKALI PYROXENE ACMtTE ACMITE-DIOPSIOE AECIR1NE AECIRINE-AUCITE AECIR1NE-DIOPSIDE OMPHACITE SODIC PECT0L1TE UOLLAST ON1TE SPODUMENE R9 OTHER (ADD IN BLOCK 0) SA SB SC SO OLIVINE FAYALtTIC FORSTERITIC MCNT1CELLITE S9 OTHER (ADD IN BLOCK CI OTHER SILICATES TA ALLANITE ALUMINO-SILICATES TB ANDALUSITE TC KYANITE TD SILL IMANITE TE BERYL TF CLAY MINERAL(S) TC CORDIERITE TM EPIDOTE TI CARNET TJ ALMAND1NE TK ANSRADITE TL CROSSULAR TM MELANITE TN PYRO-E TO SPESSARTINE TP MELIL1TE TO TITANITE. SPHENE TR TOPAZ T3 TOURMALINE TT VESUVIA.N: TE TU ZEOLITE(SI TV CHABAZ:TE TU HEULANOITE TX LAUMONT:TE TY NATROL tTE TZ PHILLIPSITE Tl ZIRCON T2 ZOISITE T9 OTHER (ADD IN BLOCK C OXIDES UA ANATASE U3 BROOK ITE UC CASS ITER1TE UD CORUNDUM UE HEMATITS UF ILMENITE UU LIMONITE UH PEROVSKITE Ul PSEUDCUfiOOKITE UJ RUTILE SILICA"CPOUP UK CRISTOBALITE UL CRYPTOCPYST. ur. OUARTZ UN TRIDYMITE uo SPINEL UP CHROMITE UO HERCYMTE UR HACHEM1TE US MACNET1TE UT PLEONASTE UU TITANOT.ASNETITE UV ULV0SP1NEL u UU OPAQUES. ORES U9 OTHER (ADD IN BLOCK NON-OXIDES. NON-SILICATE VA APATITE VB CARBONATE(SI vc CALCITE VD DOLOMITE VE S13ERITE VF FLUOR ITE VO MONAZITE UU OPAQUES. ORES VH NATIVE ELEMENT!SI VI SULFATE(S) 'SULFIDE(S) VK CHALCOPYRITE VL PYRITE VH PVRRHOTITE V9 OTHER (ADD IN BLOCK 0) MINERAL01CS UA UB UC UD WE UF CH-.C.OPHAEITE C L « iv 10--:.-.SSITE LEUCOXENE PALACONITE S10EROMELANE U9 OTHER (ADD IN BLOCK CI C. ADDITIONAL NOTES 70 -CONTRIBUTOR'S NAnE CONTRIBUTION NO. A. KEAD1N0 INFORMATION ROCK NAME F O A T I  I LATITUDE Q_ ^dhj LONOITUDE CEOLOCIC UNIT REFERENCE NO. B ESSENTIAL OXIDES 1 8102 TI02 AL203 FE203 FEO MNO MCO | CAO NA20 K20 P20S C02 | H20* M20- TOTAL ll.4o 0.4<? «) XT. 0 ^ l i t 5"% 0.|| 0.5"| o.od /of.cc TRACE ELEMENTS OR COMPONENTS . . 1A . . IC . . ID 2A NAME (r t AMOUNT T O 27.? RFFERENCE 1 1 NAME I 1 AMOUNT i i REFERENCE 1 2D 2E 2F 2G 2H 21 NAME 1 AMOUNT REFERENCE . 3A . 3B . 3C . . 3D . 3F . 3G . 3H . 31 E. ISOTOPIC OR PHYSICAL PETROCRAPHIC DESCRIPTORS ERUPTIVE TYPE. MODE OF OCCURRENCE . 4C . 4D . 4E . 4F . 4G . 4H . 41 53-"^ AA NO INFORMATION 4B AB AA AC ACCLOMERATE AD ASH AE ASH FLOU AF BATH0L1TH AC BLOCK LAVA AH BOMB A l BOSS AJ BRECCIA AK CONE SHEET AL DIATREME AM DIKE (DYKE) AN DOME AO EXTRUSIVE -AP^FLOU AO FLOU BRECCIA AO HYALOCLASTITE AS HYPABYSSAL AT ICNIMBRITE AU INTRUSIVE AV INTRUSIVE (INTRUSION) BRECCIA AU LACCOLITH AX LAP ILLI AY LAVA AZ LAVA LAKE BA LAYERED INTRUSION BB LOPOLITH BC NECK BD NUEE ARDENTE BE NODULE BF PAHOEHOE BC PHACOLITH BH PILLOU LAVA BI PIPE BJ PLUS BK PLUTON BL PLUTONIC BM PUMICE BN PYROCLASTIC BO RINC DIKE BP ROPY-LAVA 80 SCORIA BR SECRECATI ON BS S I L L BT SPATTER BU STOCK BV SUBAERIAL BU SUBAQUEOUS BX SUBMARINE BY TEPHRA BZ TUFF CA TUFF BRECCIA CB VEIN CC VOLCANIC CD VOLCANICLASTIC CE UELDED TUFF CF XENOLITH DP OTHER (ADD I*N BLOCK 0> TEXTURE. STRUCTURE.  CRAIN SIZE DO N0„ INFORMATION DR AMYCDULAR DS APHANITIC DT APHYRIC DU APLIT IC DV BANDED DU COARSE DX CRYPTOCRYSTLN. DY CUMULATE DZ DEV1TR1FIED EA DISCRYSTALLINE EB DOLERITIC EC EUCRYSTALLINE ED EOUICRANULAR EF FELSIT IC L_ES3FINE EH CLASSY EI FOLIATED E J CLOMEROPORPH. EK CNEISSIC EL CRANITIC EM CRANOPHYRIC EN CRANUL1TIC EO CRAPHIC EP HOLOCRYSTALLINE EQ HOLOHYALINE ER HYALINE ES HYAL0P1LITIC ET HYPOCRYSTALLINE EU INTER3ERTAL EV LAMPROPHYRIC EU LINEATED EX MASSIVE EY MEDIUM EZ MICROCRYSTALLINE FA MICROCRAPHIC FB MICR0L1TIC FC MICROPESMATITIC FD n lCROPOIKIL IT IC FE MICROPORPHYRITIC FF MICROSPHERULITIC FO MYRMEKITIC FH OPHITIC F I ORBICULAR F J PECMATITIC FK PERLIT IC FL PHAAERIT1C FM PILOTAXITIC FN PLATY FO POIKIL IT IC FP PORPHYRITIC FO PUM1CE0US FR RECRYSTALLIZED FS SCHISTOSE FT SCORIACEOUS FU SERIATE FV SPHERUL1TIC FU SPINIFEX FX SUBOPHITIC FY TRACHYTIC FZ VARIOLITIC CA VESICULAR YEARS METHOD MATERIAL ! REF. NO. 1 &F VXM Ov^ 'lOYtxftv-toMC &G p«VitV.OYni»Vph\c CB VITREOUS CC VITROPHYRIC CD XENOCRYSTIC HY OTHER (ADD IN BLOCK C) STATE OF PRESERVATION IA NO INFORMATION IB FRESH IC ALTERED SLICHTLY T E MODERATELY IF EXTENSIVELY I J OTHER (ADD IN BLOCK C) TYPE OF ALTERATION IK NO INFORMATION IL A R C I L L I T I C IM CHLORITIC IN DEUTERIC 10 FEN ITIC IP HYDRATED 10 HYDROTHERMAL IR LEACHED / T j l > E T AMORPHIC T T METASOMATIC IU OXIDATION IV PALACONITIC IU PR0PYLIT1C IX PYRITIC IY SAUSSURITIC IZ SER1CITIC JA SERPENT INI ZED JB S IL1C IF ICAT IDN JC SOLFATARIC (2~-)U£ATHERED J J OTHER (ADD IN BLOCK 0) OE Ca.-4-o ncn-VvC - 71 F MINERAL ASSEHPLACE NA NO INFORMATION FELDSPARS. FOIDS NB F E L D S P A R (SD A L K A L I F E L D S P A R ND A N O R T H O C L A S E N E K - F E L D S P A R . N F M I C R O C L I N E N C M I C R O P E R T H I T E NM O R T M O C L A S E N l P E R T H I T E N J S A N I D I N E OK NH A N T I f E R T H I T E P L A C I O C L A 5 E N A - P L A C I O C L A S E I N T C R H E D . P L A O NO C A - P L A C I 0 C L A 5 E NP A L B I T E NO A L B I T E - O L I C O C L A S E NR O L I C O C L A S E N S O L I C O C L . - A N D E S N . N T A N D E S I N E N U ANDSW. — L B R D R T . N V L A B R A D O R I T E N U L B R D R T . - B V T U N T . NX B Y T O U N I T E N Y B V T U N T . - A N O R T H I T E NZ A N O R T H I T E N? OTHER (ADD IN BLOCK C) O A F E L D S P A T H O i D OB A N A L C 1 M E O C C A N C R I N I T E OD H A U Y N E O E K A L S I L I T E O F L E U C I T E O S N E P H E L I N E O H N O S E A N O I P S E U D O L E U C I T E O J S O O A L I T E 09 OTHER (ADD IN BLOCK 0 1 p H Y L L O S ( L I C A T E S . D O U P L E C H A I N S I L I C A T E S . A N D A M P M I O O ' - O I C S PC PH MICA BIOTITE LEPIDOLITE MUSCOVITE PHLOCOPITE SERICITE. pATA<>1ffnvT*2 CHLORITE ' SERPENTINE P9 OTHER (ADD IN BLOCK 0 ) OA AHPHIBOLE OB BASALTIC HNBLND. OC CUMMINOTONITE OD HORNBLENDE Qf P « T ( ) « S l + e OE ALKALI AHPHIBOLE O F ARFVEDSONITE O S BARKEVIKITE OH HAST INCSI TE 01 KAER3UTITE R9 O T H E R I A J D IN B L O C K 0 > SA SB SC SD OLIVINE FAVALITIC FQRSTERITIC MONT ICELLITE S 9 OTHER (ADD IN BLOCK C) OTHER SILICATES TA ALLAN ITE ALUMINO-SILICATES TB ANDALUSITE TC KVANITE TD SILLIMANITE TE BERVL TF CLAV MINERAL(S> T C CORDIERITE T H EPIDOTE T I OAR NET T J ALMANDINE TK ANDRADITE TL CROSSULAR TM MELANITE TN PVROPE TO SPESSARTINE TP MEL1LITE TO TITANITE. SPHENE TR TOPAZ OJ KATOPHORITE TS TOURMALINE RIEBECKITE TT VESUVIANITE CfL SODIC TU ZEOLITE(S) TV CHABAZITE OM AENICMATITE TU HEULANDITE ON COSSVRITE TX LAUMONTITE on RHONITE TY NATROLITE TZ PHILLIPSITE 09 OTHER (ADD IN BLOCK C) TI ZIRCON T2 ZOISITE >VROXENES. PYROXENOIDS. OLIVINES T9 OTHER (ADD IN BLOCK C> RA PYROXENE OXIDES RB ORTHOPYROXENE UA ANATASE RC BRONZITE UD BROOKITE RD ENSTAT H E UC CASSITER1TE RE HYPERSTHENE UD CORUNDUM UE HEMATITE RF CLINOPYROXENE UF ILMENITE RC AUC1TE UU LIMONITE RH DIOPS1DE UH PEROVSKITE RI CIOPSIDE-AUC'TE UI PSEUDC3R00KITE RJ CHR0ME-DI0PS1DE UJ RUTILE RK FERROAUCITE RL HEDENDERCITE SILICA CPOUP RM HICH—AL AUCITE UK CRISTOBALITE RN PICEONITE UL CRYPTQCRYST. RO SUBCALCIC AUCITE UM QUART Z RP TIT ANAUCITE UN TRIDYMITE RO ALKALI PYROXENE UO SPINEL RR ACHITE UP CHROMITE RS ACMITE-DIOPSIOE UO HERCYMTE RT AECIR1NE UR MACHEM1TE RU AEOIR:NE-AUCI-E US MACNETITE RV AECIRINE-D10PSISE UT PLEONASTE RU OMPHACITE UU TITANOMASNETITE RX SODIC UV ULVOSPINEL ^ U U OPAOUES. ORES RV PECOLITE RZ UOLL A3T0NITE U9 OTHER (ADD IN BLOCK C) R l SPOC<-'MENE "wx p> coVA< N O N - O X I D E S . N O N - S I L I C A T E S V A A P A T I T E V B C A R B O N A T E r S ) V C C A L C I T E VO D O L O M I T E V E S I D E R I T E V F F L U O R I T E V C H O N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T I S ) V I S U L F A T E ( S I C55> S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E VM P Y R R H O T I T E V9 O T H E R ( A D D IN B L O C K 0 ) M I N E R A L O I D S UA CHLOROPHAEITE UB OLASS UC IDDINOSITE UD LEUCOXENE UE PALACONITE UP EIDEROMELANE U9 OTHER (ADD I N BLOCK 0 ) Sample 35^  72 /u-> / K u | CONTRIBUTOR'S NAME C O N T R I B U T I O N NO. A, H E A D 1 N 0 I N F O R M A T I O N R O C K N A M E LATITUDE ({.^°K/ LONC.TUDE /2,X. UNIT p£u„y lMcuNrr/-)(*vs~ £<=i<\JcD C j u ( T i - r R E F E R E N C E NO. B E S S E N T I A L O X I D E S S I 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O (1NO C A O N A 2 0 K 2 0 P 2 0 3 C B 2 M20+ H 2 0 - T O T A L Cxi 0 ' T $ O-0| 0-01 I0.1T C.01 0.(51 O . Q O T R A C E E L E M E N T S OR C O M P O N E N T S N A M E O (it /V't I AMOUNT o 4 - S~ 20-J4-R F F E R E N C E 1 :<OB> . . IC . . ID . . 2A N A M E 1 AMOUNT 1 R E F E R E N C E j !D . 2E . 2F . 2G . 2H . 21 N A M E • 1 AMOUNT R E F E R E N C E B T E A T 1 C R A P H I C  I S O T O P I C OR P H Y S I C A L . 3A . 3B . 3C . 3D . 3F .•3G . 3H . 31 E . P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E .  MODE O F O C C U R R E N C E CSS> A A AB A B A A r R E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F . NO. | NO I N F O R M A T I O N . 4C .'4D . 4E . 4F . 4G . 4H . 41 A C A G G L O M E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M E _D IKE ( D Y K E ) SOME E X T R U S I V E A P F L O U A d F L O U B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H A X L A P I L L I A Y L A V A A 2 L A V A L A K E B A L A Y E R E D I N T R U S I O N B B L O P O L I T H B C N E C K B D N U E E A R D E N T E B E N O D U L E B F P A H O E H O E BG P H A C O L I T H B H P 1 L L O U L A V A B I P I P E B J P L U C BK P L U T O N B L P L U T O N I C BM P U M I C E 8 N P Y R O C L A S T I C E J C L O M E R O P O R P H . BO R I N O D I K E E K C N E I S S I C BP R O P Y - L A V A E L C R A N I T I C BO S C O R I A EM C R A N O P H Y R FC BR S E C R E C A T I O N E N C R A N U L I T I C B S S I L L E O C R A P H I C BT S P A T T E R E P H O L O C R Y S T A L L I N E • S T O C K E O H O L O H Y A L I N E S U B A E R I A L ER H Y A L I N E S U B A Q U E O U S E S H Y A L O P 1 L I T I C S U B M A R I N E E T H Y P O C R Y S T A L L I N E B Y T E P H R A E U I N T E R S E R T A L BZ T U F F E V L A M P R O P H Y R I C CA T U F F B R E C C I A E U L I N E A T E D C B V E I N M A S S I V E C C V O L C A N I C M E D I U M C D V O L C A N I C L A S T I C M I C R O C R Y S T A L L I N E C E U E L D E D T U F F F A M I C R O C R A P H I C C F X E N O L I T H F B M I C R O L I T I C O T H E R ( A D D IN B L O C K C ) F C M I C R O P E C M A T I T I C DP F D M 1 C R O P O I K I L I T I C F E M I C R O P O R P H Y R I T I C T E X T U R E . S T R U C T U R E . 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M E T A M O R P H I C ^ J r J f l E T A S O M A T IC l U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L 1 T I C IX P Y R I T I C I Y S A U S S U R I T I C 12 S E R I C I T 1 C J A B E R P E N T J N I Z E C J B S I L 1 C I F I C A T I O N J C S O L F A T A R I C J D U E A T H E R E D J J O T H E R ( A D D I N B L O C K C) JF pt--e.V,n\V"\c zeo\;V\c « MINERAL ASSEHBLACE NO INFORMATION FELDSPARS. FOIDS < N P NE NF N3 MM N l NJ DW NO N P HQ NR «(< « T NU TW l « Xx NV vz FELDSPAR ALKALI FELDSPAR ANORTHOCLASE K-FELDSPAR MICROCLINE MICROPERTHITE OR THOCLASE PERTHITE SANIDINE ^ANTIPERTHITE PLAGIOCLASE NA-PLACIOCLASE INTCRMED. PLAO. CA-PLAOIOCLASE ALOUE ALB1TE-OLICOCLASE OLICOCLASE OLICOCL. -ANDESN. ANDESINE ANDSN -LBRDRT. LA3RADUKITE LDRPRT. -DYTWNT BVTOMN1TE BVTUNT. -ANORTHITE ANORTHITE 09 OTHER (ADD IN BLOCK C) PHYLLOSILICATES. DOUBLE CHAIN SILICATES. AND  AMPHI0O-O1DS PA P8 PC PD PE PF » 1 PC PH MICA BIOTITE LEPIDOLITE MUSCOVITE PHLOCOPITE SERICITE. p«TAt\ >ffr*rT'2 CHLORITE SERPENTINE P9 OTHER (ADD IN BLOCK 0) OA a> OC OD QP OE OF 0 0 OH 0 1 AHPHIBOLE BASALTIC HNBLND. CUMMINOTONITE HORNBLENDE PHVijO, Ji+e ALKALI AnPHIBOL£ ARFVEDSONITC BARKEVIK1TE HASTINCSITE KAER3UTITE OJ OK OL OH ON on KATOPHORITE RIEBECKITE SODIC AEN1CMATITE COSSYRITE RHON1TE N» OTHER (ADD IN BLOCK C> RS RT OA FELDSPATHOID RU OB ANALC1ME RV OC CANCRINITE RU OD HAUYNE RX OE KALSILITE 0= LEUCITE RV OS NIPHELINE RZ OH NOSEAN Rl 01 PSEUDOLEUCITE OJ SODALITE R9 09 OTHER (ADD IN BLOCK C) PYROXENES. PYROXFNQIDS.  OLIVINES RA PYROXENE RB ORTHOPYROXENE RC BRONZ1TE RD ENSTATITE RE HYPER STHZNE RF CLINOPVROXENE RC AUCITfc RH D10PSIDE RI DIOPSIDE-AUCITE RJ CHRCME-D10HS1DE RH FE*R0AUC1TE RL HEDENDEHCtTE RM HICH-AL AUCITE RN PICEONITE RO SUBCALCIC AUCITE RP T1 TANAUCITE ALKALI PYROXENE ACMITE ACMITE-DIOPSIOE AECIRINE AECIR1NE-AUCITE AECIR1NE-D10FS1DE OMPHACITE SODIC PECTOLITE UOLLASTONITE SPODUMENE OTHER (ADD IN BLOCK 0) SA SB SC SD OLIVINE FAYALITIC FORSTERITIC MCNT1CELLITE 39 OTHER (ADD IN BLOCK C) QTHFH SILICATES TA TB TC TO TE TF TC TM T I T J TK TL " TM TN TO TP TO TR ALLAN!TE ALUM1N0-S1L1CATES ANDALUSITE KYANITE SILLIMANlTE BERYL CLAY MINERAL(S) C0RD1ERITE EPIDOTE OARNET ALMANDINE ANDRAOITE CROSSULAR MEL AN ITE PYROPE SPESSARTINE HELILITE TITANITE. SPHENE TOPAZ TU V TU TX TV JU -J.I T2 TOURMALINE VESUVIANITE ZEOLITEIS) CHABAZITE HEULANDITE LAUMONTITE NATROLITE PHILLIPSITE ZIRCON ZOISITE T9 OTHER (ADD IN BLOCK C l U A U3 UC UD UE UF UU UH UI UJ ANATASE BROOKITE CASSITERITE CORUNDUM HEMATITE ILMENITE LIMOHITE PEROVSKITE PSEUDCBROOKITE RUTILE SILICA CROUP CRISTOBALITE CRYPTOCRYST. QUARTZ TRIDYMITE SPINEL CHROMITE HERCYMTE HACHEH1TE HACNETITE PLEONASTE TITANOMACNET1TE ULVOSPlNEL U X p> OPAOUES. ORES UO UP UO UR US UT UU uv U9 OTHER (ADD IN BLOCK C) NON-OXIDES. NON-SILICATES VA APATITE VS CARBONATE(S) VC CALCITE VD DOLOMITE VE SIDERITE VF FLUORITE VO MONAZITE UU OPAOUES. ORES VH NATIVE ELEMENT(SI VI SULFATE(S) V J SULFIDE(S) VK CHALCOPYRITE VL PYRITE VM PYRRHOTITE V9 OTHER (ADD IN BLOCK 01 H1NERAL0IDS UA CHLOROPHAEITE UB CLASS WC IDDINCS1TE UO LEUCOXENE WE PALACONITE UF SIDEROMELANE W» OTHER (ADD I N BLOCK 01 C. ADDITIONAL NOTES - Ik -C O N T R I B U T O R ' S N A n E C O N T R I B U T I O N NO. A. H E A D I N O I N F O R M A T I O N . R O C K NAME _ ' 1 L A T I T U D E <V L O N O I T U D E M . ^ O y j J CEOLOC1C U N I T REFERENCE NO. reLL^MomvJTAi'ios 1 B ESSENTIAL OXIPES SI02 TI02 I AL233 FE203 | FEO FINO r.co CAO NA20 j K20 P2C5 C02 H20- I H2D- TOTAL C 8 5 " 0-OT. |.o4 O.og DAL O.o4 100.15 TRACE ELEMENTS OR COMPONENTS NAME K Cr- $r Uk 1 AMOUNT 4 O 3 U 31 R F F E R E N C E 1 1A n c ID NAME 1 AMOUNT 1 I REFERENCE 5A .C2B> 2D 2E 2F 2G 2H 21 NAME ! 1 AMOUNT i R E F E R E N C E 1 ! 3A 3B 3C 3D 3F 3G 3H 31 E. rFATIC R A P H I C J R E F E R E N C E NO. I S O T O P I C OR P H Y S I C A L YEARS METHOD MATERIAL REF. NO. P E T R O C R A P H I C D E S C R I P T O R S (3£> . . 4B . . 4C . . 4D . . 4E . . 4F . . 4G . . 4H . . 41 E R U P T I V E T Y P E , MODE OF OCCURRENCE A A NO INFORMATION AB A A AC ACCLOMERATE AD ASH A E ASH FLOU AF BATHOLITH AC BLOCK LAVA AH BOMB A l BOSS AJ BRECCIA AK CONE SHEET AL DIATREME AM DIKE (DYKE) ££8»DOME AO EXTRUSIVE AP FLOU A O FLOU BRECCIA AR HYALOCLASTITE AS HYPABYSSAL A T ICNIMBRITE A O I N T R U S I V E AV INTRUSIVE (INTRUSION) BRECCIA A U LACCOLITH AX LAP ILLI A Y LAVA A Z LAVA LAKE BA LAYERED INTRUSION BB LOPDLITH BC NECK BD NUEE ARDENTE BE NODULE BF PAHOEHOE BC PHACOLITH BH PILLOU LAVA BI PIPE BJ PLUB BK PLUTON BL PLUTONIC BM PUMICE BN BO BP BO BR BS B "SO. BY BZ CA CB CC CD CE CF PYROCLASTIC RINC DIKE ROPY* LAVA SCORIA SECRECATION SILL SPATTER TOCK SUBAERIAL SUBAQUEOUS SUBMARINE TEPHRA TUFF TUFF BRECCIA VEIN VOLCANIC VOLCANICLASTIC WELDED TUFF XENOLITH DP OTHER (ADD f N BLOCK C) T E X T U R E , S T R U C T U R E ,  C R A I N S 1 2 E DO NO I N F O R M A T I O N DR A M Y C D U L A R DS AP H A N 1 T 1 C DT A P H Y R I C DU A P L I T I C DV B A N D E D DU C O A R S E DX C R Y P T O C R Y S T L N . DY C U M U L A T E DZ D E V I T R I F I E D E A DI S C R Y S T A L L I N E E B D O L E R I T I C £ C E U C R Y S T A L L I N E THTjEOU! C R A N U L A R T F F E L S I T I C E O F I N E E H C L A S S Y E I F O L I A T E D GE eurVpatvVit GF V\ E J C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T I C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P I L 1 T I C E T H Y P O C R Y S T A L L I N E E U I N T E K 3 E R T A L E V L A M P R C P H Y R 1 C SJ± L I N E A T E D Q E X J M A S S I V E E Y M E D I U M E Z MI CROCR Y S T A L L I N E F A M I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D H I C R O P O I K I L I T I C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L 1 T I C F 9 M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E C M A T I T I C F K P E R L I T 1 C F L P H A N E R I T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K I L I T I C F P P O R P H Y R I T I C F O P U M I C E O U S FR R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T 1 C F U S P I N I F E X F X S U B O P H I T I C F Y T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R CB VITREOUS CC VITHOPHYRIC CD XENOCRYSTIC HY OTHER (ADD IN BLOCK C) STATE OF PRESERVATION IA NO INFORMATION IB FRESH IC ALTERED C33~) SLICHTLY IE MODERATELY IF EXTENSIVELY IJ OTHER (ADD IN BLOCK C) TYPE OF ALTERATION IK NO INFORMATION IL ARCILLITIC IM CHLORITIC IN DEUTERIC IO FENITIC IP HYDRATED 10 HYDROTHERMAL IR LEACHED (TSJMETAMORPHIC IT METASOMATIC IU OXIDATION IV PALACONITIC IU PROPYLIT1C IX PYRITIC IY SAUSSURITIC IZ SERICITIC JA SERPENT INI ZED JB SILICIFICATION JC SOLFATAR1C <[JD)UEATHERED J J OTHER (ADD IN BLOCK C) »* pn\c Car-oo n c*,-Vv C JF pr*«.V*.n"-,V\c, •)*-> z e o \ ; - V \ t - 75 -F. MINERAL ASSEHPLACE NA NO INFORHATION FELDSPARS. FOIDS OS OTHER (ADD IN BLOCK Ol PHYLLOS1L1CATES. O O U E L E CHAIN S1LJCATES. A N D  AflPrfl 03LO1CS PA PB PC PD PE PF li f» H n iCA BIOTITE LEPI OOLITE HU3C0VI TE PHLOCCPITE SERICITE p A T O k O ^ p r r T C CHLORITE ' SERPENTINE OJ OK OL KATOPHORITE RIEBECKITE SODIC OH AENICI1AT ITE HB FELDSPAR ON COSSYRITE OO RHONITE ALKALI FELDSPAR NO ANORTHOCLASE 09 OTHER (ADD IN BLOCK C> NE K—FELDSPAR NF HICROCLINE PYROXENES. PYROXENOIDS. NC niCROPERTKITE OLIVINES NH CR THOCLASE Nl PERTHITE RA PYROXENE NJ SAN! D1 NE OV< <v\5vV.e. RB ORTHOPYROXENE NK ANTIFERTHITE RC RD BRONZITE ENSTATITE N- PLACIOCLASE RE HYPER STHZNF. NA-PLACIOCLASE NN Il.TCRrlCD PL Art. RF CLINOPYROXENE NO CA-PLACIOCLASE RC AUCITE NP ALPITE RH OIOPSICE NO A1.B1TE-OLICOCLASE Rl C:OPSIDE-AUC:TE NR OLICOCLASE RJ CHRCME-DI0PS1DE NS OLICOCL. -ANDESN. RK FERROAVCITE NT ANCES1NE RL HEDEN:-' ICITE NU ANDSN -LBRDRT. RH HICH-- AUCITE NV LA3RADGRITE RN PICEO-.: TE NU LGRDRT. -DYTWNT. RO ;uac«; !C AUCITE NX BYTO-.1NITE RP TITAf AUCITE NY BVTUNT. -ANORTHITE NZ ANORTHITE RO RR ALKALI PYROXENE ACHITE N9 OTHER (ADD IN BLOCK C l RS ACH:TE-DICPSIOE RT AECIRINE OA FELDSPATHOID • RU AEOIRINE-AUCITE OB ANALClnE RV AECIRINE-DI OF SIDE OC CANCRINITE RU OMPHACITE OD HAUYNE RX SODIC OE KALSILITE OF LEUCITE RV PECTOLITE OC NZPHELINE RZ WOLL ASTONITE OH NOSEAN R l SPGDUHENE OI PSEUDOLEUCITE OJ SODALITE R9 OTHER (ADD IN BLOCK 0) SA SB SC SD OLIVINE FAYAL IT 1 C FCJRSTERITIC HCNTICELLITC S9 OTHE» (ADD IN BLOCK 0) OTHER SI1. . TATES TA A iLANITE ALU11N0-SILICATES TB ANDALUSITC TC KYANITE TD SILLINANITE TE BERYL TF CLAY MINERAL(S) OTHER (ADD IN BLOCK 0 ) TC COROIERITE TH EPIDOTE OA AHPHIBOLE TI OARNET OB BASALTIC HNBLND. T J ALMANDINE OC CUMHINCTONITE TK ANDRADITE OD HORNBLENDE TL CROSSULAR Of TH MELANITE OE ALKALI AMPHIBCLE TN PYROPC OF ARFVEDSONITE TO SPESSARTINE 0 0 BARKEVIKITE TP HEL IL ITE OH HASTINCSITE TO T ITAN!TE. SPHENE 0 1 KAER3UTITE TR TOPAZ TU TV TW TX TV TOURMALINE VESUVIANITE ZE0LITE1S) CHABAZITE HEULANDITE LAUMONTITE NATROLITE PH ILL IPS ITE ZIRCON ZOISITE T9 OTHER (ADD IN BLOCK C> UA U3 UC UD UE UF UU UH UI UJ UK UL ur UN uo UP uo UR us UT uu d2> ANATASE BROOKITE CAESITERITE CORUNDUM HEMATITE ILMENITE L IM0-.! TE FERO". -.UTE PSEUC-rSRCOHITE RUT I „ E SIL ICA CROUP CRISTOBALITE CRVPTOCRYST. OUARTZ TRIDYMITE SPINEL CHRCMITE H f R C Y M T E H'CHEMITE MACNETITE PLEONASTE • TITANOMAGNETITE ULVOSPINEL u * P ' C O OPAOUES. ORES U9 OTHER (ADD IN BLOC* 31 NON-OXIDES. NON-SILICATES VA APATITE VB CARBONATE(S) VC CALCITE VD DOLOMITE VE SIDER I TE VF FLUORITE VO MONAZITE UW OPAOUES. ORES VH NATIVE ELEMENT IS! V ! SULFATE(S1 V J SULFIDE(S) VA CHALCOPYRITE VL PYRITE VM PYRRHOTITE V9 OTHER (ADD IN BLOCK 0) MINERALOIDS U A US UC UD WE CHLOROPHAEITE OLASS IOOINCSITE LEUCOXENE PALACONITE SIDEROMELANE W9 OTHER ( A D D IN BLOCK C l C. ADDITIONAL NOTES . .. - 76 - N T S | | I O / V- r-f | CONTRIBUTOR"S NAME CONTRIBUTION NO. A. HEADI NO INFORMATION ROCK NAME L A T I T U D E ^ ^ fj L O N G I T U D E j ^ 0 L J G E O L O G I C u N I T ^ p - ^ O ^ ^ J - ^ ^ 1 R E F E R E N C E NO. B ESSENTIAL OXIDES SI02 TI02 AL203 FE203 FEO MNO MCD CAO j NA20 K20 P203 C02 1 M20- M20- | TOTAL 0-5, 10.0L 0.1| 241 ,.68 o.ii TRACE ELEMENTS OR COMPONENTS . . 1A . . IC . . ID . . 2A &> . 2D . 2E . 2F . 2G . 2H . 21 NAME Cr \> Sr &«> ~r~ AMOUNT 11 /4 o IU ? l f 64- •2s4-R E F E R E N C E N A M E 1 AMOUNT 1 ! I R E F E R E N C E j 1 1 NAME j AMOUNT REFERENCE . . 3A . . 3B . . 3C . . 3D V:T*F . : 3G . . 3H . . 31 E. TEATlCRAPHIcg^f ( ^ T ^ 4 ^ 0 U j / 6 " " " " S O T O P I C OR P H Y S I C A L ' Y E A R S M E T H O D M A T E R I A L R E F , NO. PETROCRAPHIC DESCRIPTORS ERUPTIVE TYPE, 4B 4C 4D 4E 4F 4G 4H 41 MODE O F O C C U R R E N C E A A NO I N F O R M A T I O N A B A A A C A C C L O M E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M E AM D I K E ( D Y K E ) A N DOME AO E X T R U S I V E g ^ L O U F L O U B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A2 L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H B C N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L I T H B H P I L L O U L A V A B l P I P E B J P L U G BK P L U T O N B L P L U T O N I C BM P U M I C E ' 8N P Y R O C L A S T I C E J C L O M E R O P O R P H . BO R I N S D I K E E K CNE1SSIC BP R O P Y ' L A V A E L C R A N I T I C BO S C O R I A EM C R A N O P H Y R PC BR S E C R E C A T I O N E N C R A N U L I T I C B S S I L L E O C R A P H I C BT S P A T T E R EP H O L O C R Y S T A L L I N E B U S T O C K E O H O L O H Y A L I N E B V S U B A E R I A L ER H Y A L I N E B U S U B A Q U E O U S E S HYAL0P1LITIC BX S U B M A R I N E E T H Y P O C R Y S T A L L I N E B Y T E P H R A E U I N T E R S E R T A L BZ T U F F E V L A M P R O P H Y R I C C A T U F F B R E C C I A E U L I N E A T E D CB V E I N db M A S S I V E C C V O L C A N I C M E D I U M C D V O L C A N I C L A S T I C E Z M 1 C R O C R Y S T A L L I N E C E U E L D E D T U F F F A M I C R O C R A P H I C C F X E N O L I T H F B M I C R O L I T I C O T H E R ( A D D I*N B L O C K F C M I C R O P E C M A T I T I C DP C ) F D F E MICR0P0IK1LITIC M I C R O P O R P H Y R I T I C T E X T U R E , S T R U C T U R E , F F M1CR0SPHERULITIC C R A I N S I Z E F O M Y R M E K I T I C F H O P H I T I C DO NO I N F O R M A T I O N F l F J O R B I C U L A R P E C M A T I T I C DR A M Y C D U L A R F X P E R L I T I C DS A P H A N I T I C F L PHANERIT1C DT A P H Y R I C F M P I L O T A X I T I C D U APL1TIC F N P L A T Y DV B A N D E D F O P O I K I L I T I C DU C O A R S E F P P O R P H Y R I T I C DX C R Y P T O C R Y S T L N . F O PUH1CE0US D Y C U M U L A T E / " " F T £ ? R E C R Y S T A L L I Z E D ^~rs S C H I S T O S E DZ D E V I T R I F 1 E D E A D I S C R Y S T A L L I N E F T S C O R I A C E O U S E B D O L E R I T I C F U S E R I A T E E C E U C R Y S T A L L I N E F V S P H E R U L I T I C E D EQU1CRANULAR F U S P I N I F E X E F F E L S I T I C F X S U B O P H I T I C E O F I N E £^2> T R A C H Y T I C V A R I O L I T I C E H C L A S S Y E I F O L I A T E D C A V E S I C U L A R GE (SIAVC^'VIC &F V l i * Oi -UoY-\OI-»Wl C &G p«n\<*\ovr 1 «irpn\c CB VITREOUS CC VITROPHYRIC CD XENOCRYSTIC HY OTHER (ADD IN BLOCK C) STATE OF PRESERVATION IA NO INFORMATION IB FRESH IC ALTERED ID SLICHTLY C j l i MODERATELY IF EXTENSIVELY I J OTHER (ADD IN BLOCK C) TYPE OF ALTERATION IK NO INFORMATION IL ARC1LL1TIC IM CHL0RIT1C IN DEUTERIC 10 FEN ITIC IP HYDRATED 10 HYDROTHERMAL 18, LEACHED r i sVIET AMOR PHI C T T METASOMATIC IU OXIDATION IV PALACONITIC IU PR0PYL1TIC IX PYRITIC IY SAUSSURITIC IZ SERICIT1C JA SEPPENT INI ZED JB SJLICIFICATION JC SOLFATARIC JD WEATHERED J J OTHER (ADD IN BLOCK C) JE C a r l o no. 'ViC JF fYxlViii \ V i e - 77 -' M I N E R A L A S S E M B L A G E MA NO I N F O R M A T I O N F E L D S P A R S . F O I D S O P FELDSPAR ALKALI FELDSPAR ANOR THOCLASE K-FELDSPAR M1CROCLINE HICROPERTHITE ORTHOCLASE PERTHITE SAN!DINE • \S,Jr«. -^ANTIPERTHITC PLACIOCLA3E NA-PLACIOCLASE IMCRMCD. PLAO CA-PLACIOCLASE ALI.ITE Al.BITE-OLICOCLASE OL1COCLASE OLICOCL. -ANOESN. ANDESINE ANDSN -LBRDRT. LADRADOKITE LCRDRT. -BYTUNT BYTC.JNITE BYTUNT. -ANORTHITE ANORTK1TE N9 OTHER (ADD IN B L O C K Ol NE NF NC NH NI NJ OVC N N N O N P N O N R N S N T N U N V 09 OTHER (ADD IN BLOCK 01 PHYLLOSILlCAfgS. C H A I N S I L I C A T E S . A N D  A H P H I O O L O I P S PD PE PF H MICA BIOTITE LEFIDOLITE MUSCOVITE PHi-OCOPITE SERICITE. fATfl^ffMrTG CHLORITE SERPENTINE PV OTHER (ADD I N BLOCK 0) OA OB OC OD <5P OE OF 00 OH 0! AMPMIBOLE BA5ALTIC HNBLND. CUMMINOTONITE HORNBLENDE p«<-%«ji+e. ALKALI AMPHIBOLE ARFVEDSONITE BARKEVIKITE HASTINCSITE KAER3UTITE OJ OK OL OM ON on KATOPHORITE T3 TOURMALINE RIEBCCKITE TT VESUVIANITE SODIC TU IEOLITEIS) TV CHABAIITE AENICMATITE TU HEULANOITE COSSYRITE TX LAUMONTITE RHONITE TY NATROLITE T2 PHILLIPSITE OTHER (ADO IN BLOCK C) I1RC0N T2 ZOISITE P Y R O X E N E S . P Y R O X F N O I D S .  O L I V I N E S RD RE R H 0 I OA FELOSPATHOID RU 08 ANALCI ME RV OC CANCRINITE RU 00 HAUYNE RX OE KALSILITE 0= LEUC ITE RY OC NIPHELINE RZ OH NOSE AN Rl 01 PSEUDOLEUCITE O J SODALITE R9 PYROXENE ORTHOPYROXENE BR0NZ1TE ENSTATITE HYPERSTMUNF. CLINOPYROxENE A'JCITE D I O P S I D E D : O P S I C E - A U C : T E C H R P M E - D 1 0 H S 1 D E T E S R O A U G I T E H E D E N C E R C 1 T E HICft-AL AUCITE »ICEONITE SUFCALCIC AUCITE TITANAUCITE ALKALI PYROXENE ACMITE ACM1TE-0I0PSIDE AECIRINE AEO IRINE-AUC I r E AECIRlf.'E-DIOPSIDE OMPHACITE SODIC PECTOL IT U O L L A S T O N I T E S P O O U M E N C R9 OTHER (ADD IN BLOCK O) RS RT SA SB SC SO OLIVINE FAYALITIC FORSTFRITIC MCNTI CELLITE S9 OTHER (ADO IN BLOCK 01 OTHER SILICATES TA TB TC TD TE TF TC TI T J TK TL " TM TN TO TP TO TR ALLANITE ALUMINO-SIL1CATES ANDALUSITE KYAN1TE SILLIMANITE BERYL C L A Y M : N ; R A L ( S ) CORDIEftITE EPIDOTE OARNET ALMANDINE ANDRADITE CROSSULAR MELANITE PYROPE SPESSARTINE MEL1L1 TE TITANITE. SPHENE TOPAZ T9 OTHER (ADD IN BLOCK CI UA U D U C U D U E U F U O U H U I U J UO UR US UT UU UV UUj A N A T A S E B R O O K I T E C A E S I T E R 1 T E C O R U N D U M HEMATITE I L M E N I T E L I M O N I T E P E R O v S KITE P S E U D O B R O O K I T E R U T I L E S I L I C A C P O U P C R I S T O D A L I T E C R Y P T OC R Y S T . Q U A R T Z T R I D Y M I T E SPINEL C H R O M I T E H E R C Y M T E M A C H E M I T E M A G N E T I T E P L E O N A S T E • T I T A N 0 M A C N E T 1 T E U L V O S P I N E L U X P' O P A Q U E S . O R E S 0VA< U9 OTHER (ADO IN BLOCK CI NON-OXIDES. NON-SILICATES B_> C VD VE VF VO UU VI V J VK VL APATITE CARBONATE(SI C A L C I T E DOLOMITE S1DER1TE FLUORITE MONAZITE OPAOUES. ORES NATIVE ELEMENT(SI SULFATE(S) SULFIDE(S) CHALCOPYRITE PYRITE PYRRHOTITE V9 OTHER (ADD IN BLOCK O) M I N E R A L O I D S U A UB UC UD UE CHLOROPMAEITE CLASS IDOINOSITE LEUCOXENE PALACONITE SIDEROMELANE U9 OTHER (ADD IN BLOCK 01 0. ADDITIONAL NOTES - 78 -NTS |ju:> / / - - f l CONTRIBUTOR'S NAME CONTRIBUTION NO. A, KFADINO INFORMATION ROCK NAME INF R ATI N . LATITUDE fJ LONGITUDE / ^ 2. - t ? ^ CEOLOOIC UNIT PcljLW rAoUtsJ TAiN>5 r^otrous Suire -1 REFERENCE NO. B ESSENTIAL OXIDES S 1 0 2 T 1 0 2 A L 2 0 3 F E 2 0 3 F E O riNO 1 nco C A O | N A 2 0 K 2 0 P 2 0 S C 0 2 H 2 0 » H 2 0 - 1 T O T A L 1 ? . ^ 0.1? K-5S- C24 O.O© O.C 3 IO©-00 TRACE ELEMENTS OR COMPONENTS . . IA •<dS> . . IC . . ID 2A NAME | S r 2-r U AMOUNT s IIX CG /Of RFFERENCE NAME 1 AMOUNT I REFERENCE! 1 1 ! | 2D. 2E 2F 2G 2H 21 NAME 1 1 1 AMOUNT 1 . I ' 1 REFERENCE 1 1 1 3A 3B 3C 3D STF.AT1CRAPH IC  ISOTOPIC OR PHYSICAL J^ERENCE NO. YEARS • i METHOD MATERIAL REF. NO. 3F 3G 3H 31 E . P E T R O O R A P H I C D E S C R I P T O R S ERUPTIVE TYPE. MODE OF OCCURRENCE 4? B AC 4D 4E 4F 4G 4H 41 BN PYROCLASTIC BO RINO DIKE BP ROPY-LAVA A A NO INFORMATION BO BR SCORIA SEGREGATION A B A A BS SILL AC AGGLOMERATE BT SPATTER AD ASH BU STOCK AE ASH FLOU BV SUBAERIAL A F BATHOLITH BU SUBAQUEOUS A O A H BLOCK LAVA BOMB • " - r n j U B H A R I N E '•—Bf'TEPHRA A l BOSS BZ TUFF AJ BRECCIA CA TUFF BRECCIA AK CONE SHEET CB VEIN A L DIATREME Si. VOLCANIC AM DIKE (DYKE) WOLCANICLASTIC A N DOME WELDED TUFF A O EXTRUSIVE CF XENOLITH AP FLOW A O FLOW BRECCIA DP OTHER (ADD f N AR HYALDCLASTITE A S HYPABYSSAL TEXTURE. STRUCTURE A T ICNIMBRITE GRAIN SIZE A U INTRUSIVE A V INTRUSIVE (INTRUSION) DQ NO, INFORMATION BRECCIA AW LACCOLITH DR AHYCDULAR AX LAPILLI DS APHANITIC AY LAVA DT APHYRIC A 2 LAVA LAKE DU A P L I T 1 C BA LAYERED INTRUSION DV BANDED B B LOPOLITH DU COARSE B C NECK . DX CRYPTOCRYSTLN. B D NUEE ARDENTE DY CUMULATE B E NODULE DZ DEVITRIFIED B F PAHOEHOE EA DISCRYSTALLINE BO PHACOLITH EB DOLERITIC BH PILLOW LAVA EC E U C R Y S T A L L 1 N E B l PIPE ED E0UICRANULAR BJ PLUO EE.FELSITIC CEOJFINE BK PLUTON B L PLUTONIC EH CLASSY BM PUMICE E l FOLIATED EJ C L O M E R O P O R P H . E K C N E I S S I C EL C R A N I T 1 C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O K O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P 1 L I T I C E T H Y P O C R Y S T A L L 1 N E E U I N T E R S E R T A L E V L A M P R C P H Y R I C EU L I H E A T E D E X M A S S I V E E Y M E D I U M E Z MI C R O C R Y S T A L L I N E F A M I C R O C R A P H I C FB M I C R O L I T I C F C M I C R O P E C H A T I T I C F D M 1 C R O P O I K 1 L I T I C F E M I C R O P D R P H Y R I T 1 C F F M l C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E C M A T I T 1 C F K P E R L I T I C FL P H A N E R I T 1 C F M P I L O T A X I T I C F N PLATY F O P O I K I L I T I C F P P O R P H Y R I T I C F C L . P U M 1 C E O U S /-T=W R E C R Y S T A L L I Z E D ^ - F S ^ S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T I C FW S P I N I F E X F X S U B O P H I T I C C F ^ J T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R &F V\uO>R,\on\tt-uWlC CB VITREOUS CC VITROPHYRIC CD XENOCRYSTIC HY OTHER (ADD IN BLOCK C ) STATE OF PRESERVATION IA NO INFORMATION IB FRESH IC ALTERED ID SLICHTLV f~Tg? MODERATELY IF EXTENSIVELY I J OTHER (ADD IN BLOCK C) TYPE OF ALTERATION IK NO INFORMATION IV IW IX IY IZ JA JB uc J D ARGILLI TIC CHLORITIC DEUTERIC FENITIC HYDRATED HYDROTHERMAL LEACHED • METAMORPHIC METASOMATIC OXIDATION PALAGONUIC PROPYL ITIC P Y R 1 T I C SAUSSURITIC S E R 1 C I T I C SERPENTINIZED S 1 L 1 C I F 1 C A T I O N SOLFATARIC WEATHERED J J OTHER (ADD IN BLOCK 0) OE Car^onovV.c - 79 F. M I N E R A L A S S E H P L A C E N A NO I N F O R H A T I O N F E L D S P A R S . F O I D S NB ND H E N F N C N H F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R H I C R O C L 1 N E H I C R O P E R T H I T E O R T H O C L A S E P 9 O T H E R ( A D D I N B L O C K 0 ) OA OB e2f> QP O E O F 0 0 O H 0 1 A H P H I B O L E B A S A L T I C H N B L N D . CUrtH I NO T O N I T E H O R N B L E N D E A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K 1 T E H A S T I N C S I T E H A E R 3 U T 1 T E OJ OK OL ON on K A T O P H O R 1 T E R I E B E C K I T E S O D I C A E N 1 C H A T I T E C O S S V R I T E R H O N 1 T E 0 9 O T H E R ( A D D IN B L O C K C ) P Y R O X E N E S , P Y R O X E N O I D S .  O L I V I N E S NI P E R T H I T E R A P Y R O X E N E N J S A N I 0 1 N E ovc R B O R T H O P Y R O X E N E NK A N T I P E R T H I T E RC B R O N Z I T E RD E N S T A T I T E N L P L A C I O C L A S E R E H Y P E R S T H E N F NH N A - P L A C I O C L A S E NN I l . T C R H E D . P L A O . R F C L I N O P Y R O X E N E NO C A - P L A C I O C L A S E RC A U C I T E NP A L P I T E RH D I O P S I D E NO A L B I T E - O L I C O C L A S E RI D I O P S I C E - A U C I T F . NR O L I C O C L A S E R J C H R O n E - D l O H S I D E N S O L I C O C L . — A N D E S N . P K F E 5 R 0 A U C I T E N T A N D E S I N E R L H E D E N P E R C I T E N U A N D S N . - L B R D R T . R H H I C H — A L A U C I T E N V L A D R A D O S I T E RN P I C E O N I T E N U L D S P R T . — P Y T U N T . RO S U B C A L C I C A U C I T E NX B Y T O V I N I T E RP T I T A N A U C I T E N Y B Y T U N T . - A N O R T H I T E M A N O R T H I T E RO A L K A L I P Y R O X E N E RR' A C H I T E Ht O T H E R ( A D D IN B L O C K C ) R 3 A C H 1 T E - D I 0 P S I 0 E RT A E C I R I N E O A F E L D S P A T H O I D R U A E C I R I N E - A U C I ^ E OB A N A L C 1 H E R V A E C 1 R 1 N E - D 1 O F S I D E O C C A N C R I N I T E R U 0 H P H A C 1 T E OD H A U " N E RX S O D I C O E K A L S I L I T E O F L E U C I T E R Y P E C T O L I T E 0 0 N E P H E L I N E RZ U O L L A S T 0 N 1 T E O H N O S E AN R l S P O D U n E N E 0 1 P S E U D 0 L E U C 1 T E O J S O D A L I T E R 9 O T H E R ( A D D IN B L O C K 0 ) 0 9 OTHER ( A D D IN B L O C K 0> S A O L I V I N E S B F A Y A L 1 T 1 C P H Y L L 0 S I L K A T F 3 . O G U P L E S C F w R S T E R I T I C C H A I N S I L I C A T E S . A N D S D H C N T I C E L L I T E A M P H I O O L O I C S 5 9 O T H E R ( A D D IN B L O C K C l P A niCA PB B I O T I T E O T H E R S I L I C A T E S P C L E P I D O L I T E P D H U 3 C 0 V I T E TA A L L A N ! T E P E P H L O C O P I T E A L U H I N O - S I L I C A T E S P F S E R I C I T E T B A N D A L U S I T E PI T C K Y A N I T E ro C H L O R I T E ' T D S I L L 1 H A N I T E P H S E R P E N T I N E TE B E R Y L * T F C L A Y M I N E R A L 1S1 TJ TK TL TH TN TO TP TO TR C O R D I E R I T E E P I D O T E O A R N E T A L H A N D 1 N E A N D R A O I T E C R O S S U L A R H E L A N I T E P Y R O P E S P E S S A R T I N E H E L 1 L 1 T E T I T A N I T E . S P H E N E T O P A Z TS TT TU TV TU TX TY T3 T O U R H A L I N E V E S U V I A N I T E Z E O L I T E ( S ) C H A B A Z I T E H E U L A N 0 1 T E L A U H O N T I T E N A T R 0 L 1 T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D IN B L O C K C ) U A A N A T A S S U3 B R O O K I T E U C C A S S I T E R I T E U O C O R U N D U M U E H E M A T I T E U F I L M E N I T E U U L I M O N I T E U H F E R O V S K I T E U I P S E U D C B R O O K I T E U J R U T I L E S I L I C A C P O U P U K C R I S T O B A L I T E U L C R Y P T O C R Y S T . U M O U A R T Z U N T R I D Y M : T E U O S P I N E L U P C H R O H I T E U O H E R C Y M T E U R M A C H E M I T E U S M A C N E T I T E U T P L E O N A S T E U U • T I T A N 0 M A S N E T 1 T E U V U L V O S P I N E L U X •? U U O P A O U E S . O R E S U 9 O T H E R ( A D O I N B L O C K C l N O N - 0 X I D E S . N O N - S I L I C A T E S '•CoVA« APATITE VB CARBONATE<S> VC CALCITE VD DOLOMITE VE SIDERITE VF FLUORITE vo H 0 N A Z 1 T E uu OPAOUES. ORES VH NATIVE ELEMENT IS) VI SULFATE(SI V J SULFIDE!S> V* CHALCOPYRITE VL PYRITE VM ' PYRRHOTITE V 9 O T H E R ( A D D I N B L O C K 0 ) M I N E R A L 0 1 D S WA C H L O R O P H A E I T E U B C L A S S U C I D D 1 N 0 S I T E U D L E U C O X E N E WE P A L A C O N I T E U F S I D E R O M E L A N E W9 O T H E R ( A D D I N B L O C K 0 ) C. A D D I T I O N A L N O T E S 80 - wis | | U b /r f- I CONTRIBUTOR'S NAME C O N T R I B U T I O N NO. H E A D I NO I N F O R M A T I O N R O C K NAME 3 H A T I O N j . L A T I T U D E M L 0 N 0 , T U D E / ^ G 7 ° u J B E S S E N T I A L O X I D E S CEOLOOIC UNIT HottluT^ilUS R E F E R E N C E NO. 1 S102 TI02 AL203 FE203 FEO MNO MCO CAO NA20 K20 P203 C02 H2D*> 1 H20- TOTAL CM? Q. IX (<$ 0 - « . 0.16 0.i| C. TRACE ELEMENTS OR COMPONENTS . . 1A . . i c . . ID N A M E M" O 1/ AMOUNT o R F F E R E N C E NAME AMOUNT REFERENCE NAME 1 1 AMOUNT . i R E F E R E N C E I S O T O P I C OR P H Y S I C A L Y E A R S M E T H O D M A T E R I A L R E F , NO. P. A P E . , 3A S T R A T 1 G R A P H I C (^G-is\tl (} ^ ^ 1 ^ - , ' £ R E F E R E N C _ _ 3 B " 1 re^-Q,u"^ . . 3C . . 3D .. 3F . , 3G . . 3H . . 3Ic^ 4B 4C 4D 4E 4F 4G 4H 41 P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E . MODE OF OCCURRENCE AA NO INFORMATION AB AA AC AGGLOMERATE AD ASH A E ASH FLOW AF BATHOL1TH A O BLOCK LAVA A H BOMB A l BOSS A J BRECCIA AK CONE SHEET A L DIATREME AM DIKE (DYKE) AN DOME A f t EXTRUSIVE CJV^FLOW AO FLOU BRECCIA AR HYALOCLASTITE AS HYPABYSSAL BN PYROCLASTIC BO RINO DIKE BP ROPY-LAVA BO SCORIA BR SECREGATION BS SILL BT SPATTER BU STOCK BV SUBAERIAL 3U SUBAQUEOUS BX SUBMARINE BY TEPHRA BZ TUFF CA TUFF BRECCIA CB VEIN CC VOLCANIC CD VOLCANICLASTIC CE UGLDED TUFF CF XENOLITH DP OTHER (ADD IN BLOCK 0) TEXTURE. STRUCTURE. E J C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T 1 C E M C R A N O P H Y R r C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E EO H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P I L I T I C E T H Y P O C R Y S T A L L I N E E U INTER3ERTAL E V LAMPR0PHYR1C E U L I N E A T E D EX M A S S I V E E Y M E D I U M E Z M1CR0CRYSTALLINE F A M I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K I L I T I C F E M I C R O P O R P H Y R I T I C A T I C N I M B R I T E G R A I N S I Z E F O MYRMEK I T I C A U I N T R U S I V E F H 0PHIT1C A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A DO NO I N F O R M A T I O N F I F J O R B I C U L A R P E C M A T I T I C A U L A C C O L I T H DR A M Y C D U L A R F K P E R L I T I C AX L A P I L L I DS A P H A N I T I C F L P H A N E R I T I C A Y L A V A D T A P H Y R I C F M P I L O T A X I T I C A Z L A V A L A K E D U A P L I T I C F N P L A T Y B A L A Y E R E D I N T R U S I O N DV B A N D E D F O P0IK1LITIC BB L0P0L1TH DU C O A R S E F P P O R P H Y R I T I C B C N E C K DX C R Y P T O C R Y S T L N . F O P U M I C E O U S B D NUEE A R D E N T E DY C U M U L A T E / ^ F p T > E C R Y S T A L L l ^ - P ^ S C H I S T O S E B E N O D U L E DZ D E V I T R I F I E D B F P A H O E H O E E A DI S C R Y S T A L L I N E F T S C O R I A C E O U S BO P H A C O L I T H E B D O L E R I T I C F U S E R I A T E B H P I L L O U L A V A E C E U C R Y S T A L L I N E F V S P H E R U L I T I C B I P I P E E D EQUICRANULAR F U S P I N I F E X B J P L U G E E F E L S I T I C F X S U B D P H I T I C BK P L U T O N F I N E ( ^ F Y ^ T R A C H Y T I C B L P L U T O N I C ^ - E H C L A S S Y ^ F Z V A R I O L I T I C BM P U M I C E E l F O L I A T E D C A V E S I C U L A R GE evAwvYic & F V i i * p'i <UOYT\<H-V>WI C C B V I T R E O U S C C V I T R O P H Y R I C C D XEN0CRYST1C H Y O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A N O I N F O R M A T I O N IB F R E S H I C A L T E R E D I D S L I C H T L Y M O D E R A T E L Y I F E X T E N S I V E L Y I J O T H E R ( A D D IN B L O C K 0) T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L ARCILL1TIC IM CHL0RIT1C I N D E U T E R I C 10 F E N I T I C I P H Y D R A T E D 10 H Y D R O T H E R M A L IR L E A C H E D r^ TS^ -lET A M O R P H I C TT M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R I T I C I Y S A U S S U R I T I C I Z S E R I C t T I C J A S E R P E N T . I N I Z E D J B SIL1C1FICAT10N J C S O L F A T A R I C J D . W E A T H E R E D J J O T H E R ( A D D IN B L O C K C ) (ji^ Car&oncvV\C JF pr>e.VMiVV\t 2eo \ ; V \ c - 81 -F. M I N E R A L A S S E H D L A C E N A N O I N F O R M A T I O N F E L D S P A R S . F O I D S <3P N E N F NO NH N l N J NO NP wa N R N S N T N U N V N U F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E M I C R C P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I O I N E A N T IF E R T H I T E P L A C I 0 C L A 3 E N A - P L A C I O C L A S E I N T E R M C D . P L A O . C A - P L A C I O C L A S E A L B I T E Al.B I T E - O L I C O C L A S E O L I C O C L A S E O L I C O C L - A N D E S N . A N D E S I N E A N O S N - L B R D R T . L A 3 R A 0 O M T E L E R P R T . - B V T U N T . PC P D P E P F n. po P H M I C A B I O T I T E L E P I O O L I T E H U 3 C 0 V I T E P H L O C O P I T E S E R I C I T E C H L O R I T E E E R P E N T I N E P 9 O T H E R ( A D D Z N B L O C K 0 ) O A O B O C 0 0 QP oe O F 0 0 O H 0 1 A H P H I B O L E B A S A L T I C H N B L N D . C U M H I N O T O N I T E H O R N B L E N D E par^RJi+e A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 5 U T I T E O J OK O L K A T O P H O A I T E R I E B E C K I T E S O D I C O M A E N 1 C H A T I T E O N C O S S V R I T E 0 0 R H O N I T E 0 9 O T H E R ( A D O I N B L O C K 01 P Y R O X E N E S . P Y R O X F N O I D S .  O L I V I N E S R A P Y R O X E N E R B O R T H O P Y R O X E N E R C B R O N Z t T E RD E N S T A T U E R E H Y P E R S T H E N F R F C L I N O P Y R O X E N E R C A U C I T E R H D I O O S I C E R I D : C I P S : D E - A U C : T F . R J C H R C ' H t - D t O H S I D E R K F E ^ R O A U C I T E R L H E D E N O E R C I T E RM H I C H — A L A U C I T E R N P 1 C E 0 N I T E RO S U P C A L C I C A U C I T E NX BYTOV IN ITE RP T1 T A N A U C I T E N Y B Y T U N T . - A N O R T H I T E N l A N O R T H I T E RO A L K A L I P Y R O X E N E RR A C M I T c N 9 O T H E R ( A D D IN B L O C K C ) RS A C M I T E - D I O P S I D E RT A E C 1 R 1 N E O A F E L D S P A T H O I D R U A E C IR I M E - A U C IT E OB A N A L C 1 M E RV A E C I R I N E - D I O F S I D E O C C ANC fl 1NI T E RU O M P H A C I T E OD H A U Y N E RX S O D I C O E K A L S I L I T E 0 " L E U C I T E RY P E C T O L I T E O C N E P H E L I N E RZ U O L L A S T O N I T E O H N O S E AN R l S P O D U M E N E 0 1 P S E U D O L E U C I T E O J S O D A L I T E R 9 O T H E R ( A I 3 I N B L O C K 01 N l O T H E R ( A D D IN B L O C K C ) S A O L I V I N E S B F A f A L I T I C P H Y L L O S I L K A T E S . D O U B L E SC F U R S T E R I T I C C H A I N S I L I C A T E S . A N D S D M C N T 1 C E L L 1 T E A M P H I O O ' . O I C S S 9 O T H E R ( A D D IN B L O C K C ) O T H E R S I L I C A T E S T A T B T C T D T E < P T J T K T L ' TM T N T O T P T O TR A L L A N I T E A L U M I N O - S I L I C A T E S A N D A L U S I T E K Y A N I T E S I L L I M A N I T E B E R Y L C L A Y M I N E R A L ( S ) C O R D I E R I T E E P I D O T E OAR N E T A L M A N D I N E A N D R A O I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E H E L I L 1 T E T I T A N I T E . S P H E N E T O P A Z T S T T T U T V T U T X T Y T Z T O U R M A L I N E V E S U V I A N I T E Z E O L I T E ( S ) C H A B A Z I T E H E U L A N D I T E L A U H O N T I T E N A T R O L I T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D IN B L O C K C> U A U 3 UC UD U E U F UU U K U L UM U N UO UR U S A N A T A S E B R O O K I T E C A S S I T E R I T E C O R U N D U M H E M A T I T E I L M E N I T E L I H O N I T E P E R O V S K I T E P S E U D C 3 R 0 0 K I T E R U T I L E S I L I C A C P O U P C R I S T O B A L l T E C R V P T O C R Y S T . O U A R T Z T R I D Y M I T E S P I N E L C H R O M I T E H E R C Y M T E H A S H E M I T E M A C N E T I T E P L E O N A S T E • T I T A N O M A 5 N E T I T E U L V O S P I N E L >»X p i C O O P A O U E S . O R E S U 9 O T H E R ( A D D I N B L O C K C ) N O N - O X I D E S . N O N - 5 I L I C * T ; 5 A P A T I T E V B > C A R B O N A T E < S I vc C A L C I T C V D D O L O M I T E V E S 1 D E R I T E V F F L U O R I T E vo M O N A Z I T E uu O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S ) V I S U L F A T E ( S ) V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E V M P Y R R H O T I T E V 9 O T H E R ( A D D I N B L O C K 0 1 M 1 N E R A L 0 1 D S U A C H L O R O P H A E I T E U B O L A S S U C I D D I N O S I T E U D L E U C O X E N E U E P A L A C O N I T E U F S I O C R O M E L A N E U 9 O T H E R ( A D D I N B L O C K 0 ) C . A D D I T I O N A L N O T E S 1 N T S \IU^ / r " T 1 _ 82 -C O N T R I B U T O R ' S NAME C O N T R I B U T I O N NO. A. H E A D I N G I N F O R M * ROCK N A M E OO L A T I T U D E Q[,4iC fO L O N C I T U D E „ _ ., I CEOLOCIC O N I T J 7 £ ( J , 0 Mou^TTAi »\JS 1 R E F E R E N C E NO. B E S S E N T I A L O X I D E S S I 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O UNO r.co C A O N A 2 0 K 2 0 | P 2 0 S | C 0 2 | H 2 0 » H 2 D - | T O T A L 054| 1 ^ II-oo 0 . 2 O i i4 2..03 Q.(jO 0.OCJ CMfe IO&0& T R A C E E L E M E N T S OR C O M P O N E N T S N A M E Ml I o 1/ V M> 1 AMOUNT 0 P F F E R E N C E N A M E I I ! ! A M O U N T 1 i i R E F E R E N C E ] i I I II 1 i 1 2A NAME I I I ! i AMOUNT 1 j R E F E R E N C E 1 1 . . 3A . . 3B . . 3C . . 3D . . 3F . . 3G . . 3H . . 31 E^_ . 4B . 4C . 4D . 4E . 4F . 4G . 4H . 41 S T E A T I C R A P H I C f c a X T L Qj" W» f ^ T O U ^ I S O T O P I C OR P H Y S I C A L ' E F E R E N C E NO. Y E A R S 1 M E T H O D M A T E R I A L R E F . NO. i ! P E T R O C R A P H I C D E S C R I P T O R S ERUPTIVE TYPE. BN PYROCLASTIC MODE OF OCCURRENCE BO RINO DIKE BP RO»Y- LAVA A A NO INFORMATION BO SCORIA BR SECRECAT1 ON AB AA BS SILL AC A G C L O H E J 1 A T E ST SPATTER AD ASH BU STOCK AS ASH FLOU BV SUBAERIAL AF BATHOLITH BU SUBAQUEOUS A C BLOCK LAVA BX SUBMARINE AH BOMB BY TEPHRA A l BOSS BZ TUFF AJ BRECCIA CA TUFF-BRECCIA AK CONE SHEET CB VEIN AL DIATREME CC VOLCANIC AM DIKE (DYKE) CD V O L C A N I C L A S T 1 C AN DOME CE WELDED TUFF AO EXTRUSIVE CF XENOLITH (*P)FLOU TWJ FLOW BRECCIA DP OTHER (ADD IN BLOCK 0 ) AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A Z L A V A L A K E B A L A Y E R E D I N T R U S I O N B B L 0 P 0 L 1 T H B C N E C K B D N U E E A R D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L 1 T H B H P I L L O U L A V A 81 P I P E B J P L U C BK P L U T O N B L P L U T O N I C BM P U M I C E T E X T U R E , S T R U C T U R E .  C H A I N S I Z E DO NCJ I N F O R M A T I O N DR A M Y C D U L A R DS A P H A N I T I C DT A P H Y R I C DU A P L I T I C DV B A N D E D DU C O A R S E DX C R Y P T O C R Y S T L N . DY C U M U L A T E D Z D E V I T R I F I E D E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D E 0 U 1 G R A N U L A R E F . . F E L S I T I C • E C / I N E *-6H C L A S S Y E I F O L I A T E D GE ev.Vt>s<\Vic & F V l«p ' > 4 \ o Y M l > - » \ - , ' > C P«n'%A'iOY»>lYj>rl\c E J C L O M E R O P O R P H . C B V I T R E O U S E K C N E I S S I C C C V I T R O P H Y R I C E L C R A N I T I C CD X E N O C R Y S T I C EM C R A N O P H Y R I C E N C R A N U L I T 1 C HY O T H E R ( A D D I N E O C R A P H I C E P H O L O C R Y S T A L L I N E S T A T E O F P R E S E R V A T E Q H O L O H Y A L I N E ER H Y A L I N E I A NO I N F O R M A T I O N E S H Y A L O P I L I T I C IS F R E S H E T H Y P O C R Y S T A L L I N E I C A L T E R E D E U I N T E R S E R T A L ID S L I C H T L Y E V L A M P R O P H Y R I C . CT_ZE— M O D E R A T E L Y E U L I N E A T E D I F E X T E N S I V E L Y EX M A S S I V E E Y M E D I U M I J O T H E R ( A D D I N E Z M I C R O C R Y S T A L L I N E F A M I C R O C R A P H I C T Y P E O F A L T E R A T I O N F B M I C R O L I T I C F C M I C R O P E C M A T I T I C I* NO I N F O R M A T I O N F D M I C R O P O I K 1 L I T 1 C F E M I C R O P O S P H Y R I T I C I L A R C I L L I T I C F F M I C R O S P H E R U L I T I C IM C H L 0 R 1 T I C F O M Y R M E K I T I C IN D E U T E R I C F H O P H I T I C 1 0 F E N I T I C F I O R B I C U L A R I P H Y D R A T E D F J P E C M A T I T I C 1 0 H Y D R O T H E R M A L F K P E R L I T 1 C IR L E A C H E D F L P H A N E R I T I C < " T|>1ETAM0RPHIC F M P I L O T A X I T I C I T M E T A S O M A T I C F N P L A T Y i U O X I D A T I O N F O P O I K I L I T I C I V P A L A C 0 N 1 T I C F P P O R P H Y R I T I C I U P R 0 P Y L 1 T 1 C F O P U M I C E O U S 11 P Y R 1 T I C FR R E C R Y S T A L L 1 Z E D I Y S A U S S U R I T I C F S S C H I S T O S E I Z S E R 1 C 1 T I C F T S C O R I A C E O U S J A S E R P E N T 1 N I Z E D F U S E R I A T E J B S I L I C I F I C A T I O N F V S P H E R U L I T I C J C S O L F A T A R I C F U S P I N I F E X J D W E A T H E R E D IX S U B O P H I T I C F Y . J R A C H Y T 1 C J J O T H E R ( A D D I N rf V A R I O L I T I C C A V E S I C U L A R ' C A T - \ > o r \ o A - ' \ C OY>eV\Y\ VV\c t eo\ \-v\c. - 83 -F. M I N E R A L A S S E H P L A C E N A NO I N F O R n A T l O N F E L D S P A R S . F O I D S NB F E L D S P A R £Z*S& A L K A L I F E L D S P A R ND A N O R T H O C L A S E N E K - F E L D S P A R N F H I C R O C L I N E N C H I C R O P E R T K I T E N H O R T H O C L A S E C P D P E P F f l P C P H H I C A B I O T I T E L E P 1 O O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E O A T C T t ^ J M r T C C H L O R I T E ' S E R P E N T I N E P 9 O T H E R ( A O D I N B L O C K C ) DB O C oe O F oo O H 0 1 A H P H I B O L E B A S A L T I C H N B L N D . C U m l N O T O N I T E H O R N B L E N D E A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 3 U T I T E O J OK O L K A T O P H O R I T E R I E B E C K I T E S O D I C OM A E N I C M A T I T E ON C O S S Y R I T E 0 0 R H O N I T E at O T H E R ( A D O I N B L O C K 0 ) P Y R O X E N E S . P Y R O X E N O I D S .  O L I V I N E S O T H E R S I L I C A T E S T A T B T C T D T E T F T C T J T K T L T H T N T O T P T O TR A L L A N I T E A L U M I N 0 - S I L 1 C A T E S A N D A L U S I T E H Y A N I T E S I L L I M A N I T E B E R Y L C L A Y M I N E R A L ( S ) C O R D I E R I T E E P I D O T E CAR N E T A L M A N O I N E A N D R A O I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E H E L 1 L 1 T E T I T A N I T E . S P H E N E T O P A I T 3 T T T U T V T H T X T V T O U R M A L I N E V E S U V I A N I T E Z E O L I T E ( S ) C H A B A 2 I T E H E U L A N D I T E L A U M O N T I T E N A T R O L I T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D I N B L O C K C> N l P E R T H I T E R A P Y R O X E N E O X I D E S N J S A N I D I N E »\5>-T.e. O K RB O R T H O P Y R O X E N E U A A N A T A S E NH ANT I P E R T H I T E RC B R O N Z I T E ' U 3 BROOKITE RD E N S T A T I T E UC C A S S 1 T E R 1 T E N L P L A C I 0 C L A 3 E R E H Y P E R S 7 H E N E UD C O R U N D U M ^J i> N A - P L A C I O C L A S E U E H E M A T I T E NN I N T E R M C D . P L A f t R F C L I N O P V R O X E N E U F I L M E N I T E NO C A - P L A C I O C L A S E RC A U C I T E UU L I HON I T E NP A L B I T E RH D 1 0 P S I D E UH f E R O V S K I T E NO A L B I T E - 0 L 1 C C C L A S E RI C . T . P S I D E ^ A U C I T E U I P S E U 0 C 3 R O O " I T E NR O L I C O C L A S E R J C H R C M E - D I 0 P S 1 D E U J R U T I L E NS O L I C O C L . - A N D E S N . RK F E S R O A U C I T E N T A N C E S I N E R L H E D E N P E R C I T E S I L I C A C P O U P NU A M 2 5 N - L B R D R T . RM H I C H - A L A U C I T E UK C R I S T O P A L I T E N V L A 3 R A D 0 " . I T E IN P I C E O N I T E U L C R Y P T O C R Y S T . NU L B R D R T . -BYTUNT. RO S U S C A L C I C A U C I T E ur O U A S T Z NX SYTOUN-.TE RP T I T A N A U C I T E . U N TRIDYM:TE HV BYTUNT. - A N O R T H I T E t-iz A N O R T H I T E RO A L K A L I P Y R O X E N E UO S P I N E L RR A C M I T E UP C H R O H I T E OTHER ( A D D IN B L O C K C> RS A C M I T E - O I O P S I O E UO H E R C Y M T E RT A E C 1 R I N E UR M A C H E M 1 T E O A F E L D S P A T H 0 1 D RU AECIR:NE-AU^;-E U S M A C N E T I T E •a A N A L C 1 M E RV A E C I R I N E - D I C P S I D E U T P L E O N A S T E OC C A N C R I N I T E RU 0 M P H A C 1 T E U U T I T A N O M A C N E T 0 0 H A U " N E RX SCDIC y y _ U L V O S P I N E L O E K A L S I L I T E <<W ) O P A Q U E S . O R E S O F L E U C I T E RY P E C T U L 1 T E OC N E P H E L I N E RZ U O L L A S T O N I T E U 9 O T H E R ( A D D IN P L C OH N O S E AN , R t S P O D u r . E N E 01 P S E U D O L E U C I T E NON-- O X I D E S . NON-S IL IC O J S O D A L I T E R 9 O T H E R : A P D I N B L O C K 01 ) A P A T I T E 0 9 O T H E R ( A D D IN B L O C K 0> SA SB OLI>:NE F A Y A L I T I C ) C A R P O N A T E ( S ) C A L C I T E P H Y L L O S I L K A T E 3 . D G U P L E SC F C R S T E R I T I C V D D O L O M I T E C f - A I N S I L I C A T E S . AND SO M C N T I C E L L I T E V E S t D E R I T E A . - l P M l O O L O l C S V F F L U O R I T E S 9 O T H E R (ADD IN B L O C K C) VO M O N A Z I T E picoV'A«i uu V H V I V J V K ' V L vn O P A O U E S . O R E S N A T I V E E L E M E N T ( S ) S U L F A T E ( S ) S U L F I D C ( S ) C H A L C O P Y R I T E P Y R I T E P Y R R H O T I T E V 9 O T H E R ( A D D I N B L O C K 01 M I N E R A L O I D S WA C H L O R O P H A E I T E UB C L A S S U C I D D I N O S I T E UO L E U C O X E N E WE P A L A C O N I T E WF S I D E R O M E L A N E U 9 O T H E R ( A D D I N B L O C K 0 ) 0. A D D I T I O N A L N O T E S - 34 - ; NTS | ( U N /}-'-) C O N T R I B U T O R ' S NAME C O N T R I B U T I O N NO. A. H E A D I NO I N F O R M A T I O N R O C K NAME L A T I T U D E 6 / - f 3 f ' l V L O N G I T U D E f 3 Z , 4 5*VV/ GEOLOGIC UNIT p £ U _ V K o U r V J T f y i > O S " 1 R E F E R E N C E NO. B E S S E N T I A L O X I D E S S 1 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 1 F E O MNO r .co C A D | N A 2 0 K 2 0 | P 2 0 3 cos H 2 0 * H 2 0 - T O T A L o.f4 U4- ' 0-|f 6 oo O.o7 |oo-o8 T R A C E E L E M E N T S OR C O M P O N E N T S NAME A/( ('<- \J AMOUNT i i . IU R F F E R S N C E N A M E ! 1 AMOUNT 1 ( | | R E F E R E N C E J 1 1 NAME 1 1 AMOUNT 1 R E F E R E N C E B T E A T 1 C R A P H 1 C CtX^-l1^ I S O T O ? I C OR P H Y S I C A L R E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F . NO. P E T R O C R A P H 1 C D E S C R I P T O R S E R U P T I V E T Y P E . MODE OF O C C U R R E N C E A A NO I N F O R M A T I O N A B A A A C A O C L O M E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A AH C O N E S H E E T A L _ D I A T R E M E D I K E ( D Y K E ) DOME AO E X T R U S I V E A P F L O W A O F L O U B R E C C I A AR H Y A L D C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A AZ L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H B C N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L I T H B H P I L L O W L A V A B l P I P E B J P L U O BK P L U T O N B L P L U T O N I C 8M P U M I C E B N P Y R O C L A S T I C E J BO R I N G D I K E E K BP R O P Y * L A V A E L BO S C O R I A EM BR S E C R E C A T I O N E N S S S I L L E O BT S P A T T E R E P B U S T O C K E O B V S U B A E R 1 A L ER B U S U B A Q U E O U S E S BX S U B M A R I N E E T BY T E P H R A E U BZ T U F F E V C A T U F F B R E C C I A E U CB V E I N EX C C V O L C A N I C E Y C D V O L C A N I C L A S T I C E Z C E W E L D E D T U F F F A C F X E N O L I T H F B F C DP O T H E R ( A D D I N B L O C K C ) F D F E T E X T U R E . S T R U C T U R E . F F G R A I N S I Z E F C F H DO NO I N F O R M A T I O N F l F J DR A M Y C D U L A R F K DS A P H A N I T I C F L DT A P H Y R I C F M D U A P L I T I C F N DV B A N D E D F O D U C O A R S E F P DX C R Y P T O C R Y S T L N . F O DY C U M U L A T E F R DZ D E V I T R I F 1 E D F S E A D I S C R Y S T A L L I N E F T E B D O L E R I T I C F U E C E U C R Y S T A L L I N E F V E 0 U 1 C R A N U L A R F U ^ F E L S I T I C F X ^ f f f C L A S S Y F Y F Z E t F O L I A T E D GA C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C HY O T H E R ( A D D IN B L O C K C) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N IB F R E S H I C A L T E R E D (JJV S L I C H T L Y I E M O D E R A T E L Y I F E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K C) T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R G I L L 1 T I C IM C H L 0 R 1 T 1 C I N D E U T E R 1 C 10 F E N I T I C LP H Y D R A T E D CICv H Y D R O T H E R M A L rt L E A C H E D I S M E T A M O R P H I C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R 1 T 1 C I Y S A U S S U R I T I C I Z S C R I C I T I C J A S E R P E N T - I N 1 2 E D J B S I L I C I F I C A T I O N J C S O L F A T A R I C J D - U E A T H E R E D J J O T H E R ( A D D IN B L O C K C ) Gc i V T C C X V T i c & F V m C M d , - 85 -g M I N E R A L A S S E H P L A C E K A NO I N F O R M A T I O N F E L D S P A R S . F O I D S F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E M I C R O P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I O I N E ^ A N T I F E R T H I T E P L A 0 I 0 C L A 3 E N A - P L A C I O C L A S E I N T E R M C D . P L A O C A - P L A C I O C L A S E A L B I T E A L B I T E - O L I C O C L A S E O L I C O C L A S E . O L I C O C L . - A N D E S N . A N D E S I N E A N D S N - L B R D P T . L A O R A O O M T E L O R D R T . - B Y T U N T N E N F NC NH N I N J OK NN NO KR HS NT N J N V N U A M P H I B O L O U S PA PS PC PD PE PF »1 PO PH M I C A B I O T I T E L E P I D O L I T E M U S C O V I T E PK,.oeopi-E S E R I C I T E C H L O R I T E S E R P E N T I N E P 9 O T H E R (ADD I N B L O C K 0) OA OB OC 0 0 OP OE OF 0 0 OH 0 1 A M P H 1 B O L E B A S A L T I C H N B L N D . C U M M I N O T O N I T E H O R N B L E N D E P A Y ^ R f l+e A L K A L I A M P H t B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 3 U T 1 T E O J K A T O P H O R I T E T S T O U R M A L I N E OK R I E B E C K I T E T T V E S U V I A N I T E O L S O D I C T U Z E O L I T E ( S ) T V C H A B A Z I T E OM A E N I C M A T I T E T U H E U L A N 0 1 T E ON C O S S Y R I T E T I L A U H O N T I T E 0 0 R H O N I T E T Y N A T R O L I T E T Z P H I L L I P S I T E 0 9 O T H E R ( A D D I N B L O C K 0 ) T t Z I R C O N T 2 Z O I S I T E P Y R O X E N E S , P Y R Q X F N 0 I D 5 . O L I V I N E S NX BYTO ' . IN ITE RP N Y B Y T U N T . - A N O R T H I T E NZ A N O R T H I T E RO RR N 9 O T H E R ( A D D IN B L O C K 0 ) R S RT O A F E L D S P A T H O I D RU OB A N A L C 1 ME B V O C C A N C R I N I T E RU O D H A UV N E RX O E K A L S I L I T E 0 * L E U C I T E RY O C N Z P H E L I N E RZ O H N O S E AN R l 0 1 P S E U D 0 L E U C 1 T E O J S O D A L I T E R 9 0 9 O T H E R ( A D D I N B L O C K 0 ) S A SB P H Y L L O S I L I C A T E S . D G U P L E S C C H A I N S I L I C A T E S . AND SD R A P Y R O X E N E RB O R T H O P Y R O X E N E R C B R O N Z I T E RD E N S T A T I T E R E H Y P E R S T H E N F R F C L I N O P Y R O X E N E R C A ' J C I T t R H D I O - ' S I D E RI C I C I P S I C E - A U C I T E R J C H R C M E - D I 0 P S 1 0 E RK F E R R O A U C I T E R L H E D E N B E R C I T E RM H I C H - A L A U C I T E I N P I C E O N I T E RQ S U B C A L C 1 C A U C I T E T I T A N A U C I T E A L K A L I P Y R O X E N E A C M I T E A C M I T E - D I O P S I O E A E C 1 R I N E A E C I R I t J E - A U C I ' E A E u t R I N E - D I O P S I D E O - . P V A C I T E S O D I C P E C T O L I T E U O L L A S T O N I T E S P O D U M E N E  O T H E R ( A P D IN B L O C K 0 ) O L I V I N E F A Y A L I T I C F O R S T E R I T I C M C N T I C E L L I T E S 9 O T H E R ( A D D I N B L O C K C ) O T H E R S I L I C A T E S T A T B T C T D T E T F T O TH TI T J T K T L ' T B T N T O T P TO T R A L L A N I T E A L U M I N O - S I L I C A T E S A N D A L U S I T E K Y A N I T E -5 I L L I M A N I T E B E R Y L C L A Y M I N E R A L ( S ) C O R D I E R I T E E P I D O T E O A R N E T A L M A N D 1 N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L I L I T E T I T A N I T E . S P H E N E T O P A Z T 9 O T H E R ( A D D I N B L O C K 01 ANATASE BROOKITE CACSITERITE CORUNDUM HEMATITE ILMENITE L l n O N I T E P E R O V S K I T E P 5 E U 0 C 3 R 0 0 K I T E R U T I L E UD U E U F UO UH U I U J CSS-UN U S UT UU UV uu S I L I C A C P O U P C R I S T O O A L I T E C R Y P T C C R Y S T . O U A R T Z T R I D Y M I T E S P I N E L C H R C M I T E M E R C Y N I T E H A C H E M I T E M A C N E T I T E P L E O N A S T E T I T A N O M A C N E T 1 T E U L V O S P I N E L O P A O U E S . O R E S l»X p'iLoVA< U 9 O T H E R ( A D D IN B L O C K C ) N O N - O X I D E S . N 0 N - S I L 1 C A T H S V A A P A T I T E V B C A R B O N A T E ( S ) vc C A L C I T E VO D O L O M I T E V E S I D E R I T E V F F L U O R I T E VC M O N A Z I T E uu O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S I V I S U L F A T E I S I V J S U L F I D E ( S I V A C H A L C O P Y R I T E V L P Y R I T E VM P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 01 M I N E R A L O I D S UB UC UD WE C H L O R O P H A E I T E C L A S S I D D I N O S I T E L E U C O X E N E P A L A C O N I T E S I D E R O M E L A N E U 9 OTHER (ADD I N BLOCK C) C. A D D I T I O N A L N O T E S Souvvje 3*/-6 36 IU J / f f-C O N T R I B U T O R ' S NAME C O N T R I B U T I O N NO. A. M E A D I N O I N F O R M A T I O N R O C K N A M E L A T I T U D E ii J}4°^ L O N O I T U D E t'Y*^  C E O L O C I C U N I T R E F E R E N C E NO. 1 B E S S E N T I A L O X I D E S S I 0 2 T I D 2 A L 2 0 3 F E 2 0 3 F E O MCO C A O N A 2 0 K 2 0 P 2 0 5 C 0 2 H 2 0 * H 2 0 - T O T A L j 0,9] 0 i? o.g4 /'TiT 0."Z=J 8.4. O-oo 101-51 C. T R A C E E L E M E N T S OR C O M P O N E N T S N A M E Cr \J tr AMOUNT 2--L 0 111 llQI 101 R F F E R E N C E N A M E AMOUNT • R E F E R E N C E | NAME AMOUNT R E F E R E N C E . 3A . 3B . 3C . . 3D . 3F . 3G . 3H . 31 E. S T F . A T I C R A P I S O T O P I C OR P H Y S I C A L E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F , NO. P E T R O C R A P H I C D E S C R I P T O R S •<3s> AB AC '4D . 4E 4F 4G 4H 41 E R U P T I V E T Y P E - MODE O F O C C U R R E N C E A A N O I N F O R M A T I O N AB A A A C A C C L O M E R A T E A D A S H A E A S H F L O W A F B A T H O L 1 T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M E AM D I K E t D Y K E ) A N DOME A O E X T R U S I V E A P F L O W AO F L O W B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E t I N T R U S I O N ) B R E C C I A AW L A C C O L I T H AX L A P I L L I A Y L A V A A 2 L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L 1 T H B C N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L I T H B H P I L L O W L A V A B I P I P E B J P L U O BK P L U T O N B L P L U T O N I C BM P U M I C E BN P Y R O C L A S T I C BO R I N O D I K E BP R O P Y - L A V A BO S C O R I A BR S E C R E C A T I O N . B S S I L L BT S P A T T E R BU S T O C K BV S U B A E R I A L S U S U B A Q U E O U S BX S U B M A R I N E BY T E P H R A BZ T U F F C A T U F F B R E C C I A C B V E I N C C V O L C A N I C <C l [ } /OLC A N I C L A S T I C C E W E L D E D T U F F C F X E N O L I T H DP O T H E R < ADD I°N B L O C K C) T E X T U R E , S T R U C T U R E .  C R A I N S I Z E DO NO, I N F O R M A T I O N DR A M Y C D U L A R DS A P H A N I T I C DT A P H Y R I C DU A P L I T I C DV B A N D E D DU C O A R S E DX C R Y P T O C R Y S T L N . DY C U M U L A T E DZ D E V I T R I F I E D E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D E O U I C R A N U L A R E F _ F E L S I T I C <3?5_>INE E H C L A S S Y E l F O L I A T E D E J C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T I C EM CRANOPHYRrC E N C R A N U L 1 T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P I L 1 T 1 C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R I C E U L I N E A T E D E X M A S S I V E E Y M E D I U M E Z M I C R O C R Y S T A L L I N E F A M 1 C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R 0 P 0 I K 1 L I T 1 C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E C M A T I T I C F K P E R L 1 T I C F L P H A N E R I T I C F M P I L O T A X I T I C F N PLATY F O POIKILITIC F P PORPHYRITIC F O P U M I C E O U S F R R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R 1 A C E 0 U S F U S E R I A T E F V S P H E H U L I T 1 C F U S P I N I F E X F X S U B O P H I T I C F Y T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R G6 ewW\VrC & F V\w O i ^ \ O Y > \ 0 » - t e W \ C &G e « 1 n \ A . \ o w M Y p h \ c C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C H Y O T H E R ( A D D I N B L O C K C) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N I B F R E S H I C A L T E R E D QBB S L I C H T L V I E M O D E R A T E L Y I F E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K C> T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L 0 R 1 T I C IN D E U T E R I C 10 F E N I T I C IP M Y D R A T E D 1 0 H Y D R O T H E R M A L L E A C H E D Q l S > 1 E T A M O R P H I C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R 1 T 1 C I Y S A U S S U R I T I C 11 S E R 1 C I T I C J A S E R P E N T I N I Z E D J B S 1 L I C I F I C A T I D N J C S O L F A T A R 1 C J D W E A T H E R E D J J O T H E R ( A D D I N B L O C K C ) OE Car\>or\CT-ViC JF pr>e.V\rt-iV\C. - 87 i . / -N A NO INFORMATION FELDSPARS. FOIDS NS FELDSPAR ALKALI FELDSPAR V-ND ANORTHOCLASE NE K-FELDSPAR NF HICROCLINE NG HICROPEHTHITE NH ORTHOCLASE N l PERTHITE NJ SANIDINE OK NH ANTIPERTHITE NL PLAGIOCLASE NH NA-PLAC10CLASE NN II.TERMED. PLAO NO CA-PLACIOCLASE NP AL D ITE NO Al.BITE-OLIGOCLASE NR 0L1C0CLASE NS OLICOCL. —ANDESN. NT ANDESINE NU AND5N —LBRDRT. NV LABRADORITE NU LBRDJT. -BYTUNT NX BYTOWNt TE NY BYTUNT. -ANORTHITE r u ANORTHITE N 9 OTHER (ADD IN BLOCA G) OA FELDEPATHOID CB ANALC1HE OC CANCRINITE OD HAUYNE OE KALSILITE 0= LEUCITE OC NIPHELINE OH NOSEAN 01 PSEUDOLEUCITE Oo S0DAL1TE 0 9 O T H E R ( A D D I N B L O C K 0 > P H Y L L O S I L T C A T E S . D O U P L E C H A I N S I L I C A T E S . A N D A.-JHIOO.OICS P A P B #> P F f l re P H ' niCA BIOTITE LEP1D0LITE MUSCOVITE PHLOCOPITE SERICITE p « T A ^ 0 M T « CHLORITE SERPENTINE PV OTHER (ADD I N BLOCK 0) OA OB OC OE OF 00 OH 01 AHPHIBOLE BASALTIC HNBLND. CUMMINCTONITE HORNBLENDE PAYqoti+e ALKALI AHPHIBOLE ARFVEDSONITE BARKEV1KITE HASTINCSITE HAER3UTITE OJ KATOPHORITE TS TOURMALINE OK RIEBECKITE TT VESUVIANITE OL SODIC TU ZEDLITE(S) TV CHABAZITE OM AENICMATITE TU HEULANDITE ON COSSYRITE TX LAUMONTITE 0 0 RHON1TE TY NATROLITE PHILLIPSITE 0 9 OTHER (ADD IN BLOCK C l ZIRCON ZOISITE P Y R O X E N E S . P Y R 0 X F N 0 1 D S . O L I V I N E S " RA P Y R O X E N E RB - O R T H O P Y R O X E N E R C B R 0 N Z 1 T E RD E N S T A T 1 T E R E H Y P E R S T H E N E R F C L I N O P Y R O X E N E R C A U C I T E R H D I 0 ° S 1 D E R I D I C i P S I P E - A U C I T F . R J C H R O M E — D I O P S 1 D E RK F E R R O A U G I T E R L H E D E N B E R C I T E R M H I C M — A L A U C I T E R N P 1 C E 0 N 1 T E R O S U 9 C A L C I C A U C I T E R P T I T A N A U C I T E RO A L K A L I P Y R O X E N E R R A C H I T c R S A C M I T E - D I O P S I D E R T A E C 1 R I N E R U A E C I R I N E - A U C I T E R V A E C 1 R I N E — D I O P S I D E RU O M P H A C I T E RX S O D I C RY P E C T O L I T E RZ U O L L A S T O N I T E Rl S P O O U M E N E R9 OTHER (ADD IN BLOCK 0 1 S A S B S C S D OLIVINE FAYALITIC FORSTERI TIC MONT I CELLITE S 9 OTHER ( A D D IN BLOCK C> OTHER SILICATES TA TB TC TD TE TP TC TI T J TK TL TM TN TO TP TO TR ALLANITE ALUM1N0-S1L1CATCS ANDALUSITE KYANITE SILLIMAN1TE BERYL CLAY MINERAL(S> CORDIERITE EPIDOTE OARNET ALMAND1NE ANORADITE CROSSULAR MELANITE PYROPE SPESSARTINE MEL1LITE TITANITE. SPHENE TOPAZ T 9 OTHER ( A D D IN SLOCK C l U A U 3 U C U D U E U F U U U H U I U J U K U L U M U N U O U P U O UR U S U T U U ANAT ASE BROOKITE CASSITERITE CORUNDUM HEMATITE ILMENITE LIMOHITE PEROVSKITE PSEUDCSR00K1TE RUTILE SILICA CROUP CR1STP0ALITE CRYPTOCRYST. QUARTZ TR1DYMITE SPINEL CHROMITE HERCYMTE MAGHEMITE MAGNETITE PLEONASTE TITANOMAGNETITE U L V 0 S P 1 N E L u * P OPAOUES. ORES U 9 OTHER (ADO IN BLOCK C) NON-OXIDES. NON-SILICATES VA APATITE VB CARBONATE(S) VC CALCITE VD DOLOMITE VE SIDERITE VF . FLUORITE vo MONAZITE uu OPAOUES. ORES VH NATIVE ELEMENT(S) VI SULFATE(S) V J SULFIDE(S) VH CHALCOPYRITE VL PYRITE VM PYRRHOTITE V9 OTHER ( A D D IN BLOCK 0 1 niNERALOIDS UA CHLOROPHAEITE US OLASS UC 1DOIN0SITE UD LEUCOXENE UE PALACONITE UF SIDEROMELANE U9 OTHER (ADD I N BLOCK C) 0. ADDITIONAL NOTES - 88 -C O N T R I B U T O R ' S N A M E C O N T R I B U T I O N NO. A. H E A D 1 N S I N F O R M A T I O N R O C K NAME L A T I T U D E 0 /O LONGITUDE ^ 2 . ^ * y^ J R E F E R E N C E NO ,c U N I T pCfLLV KcUK/T/\AtOS 1 B E S S E N T I A L O X I D E S 8 1 0 2 T I 0 2 1 A L 2 C 3 F E 2 0 3 F E O fINO n c o C A O N A 2 0 K 2 0 j P 2 0 3 C 0 2 H 2 0 * H 2 0 - T O T A L o-of3 0.44- 0.(7 O\0 1-3? Of T R A C E E L E M E N T S OR C O M P O N E N T S N A M E /Vi C r V [?k i M i AMOUNT OS Ho 14- (if R F F E R E N C E . . 1A COP . i c . ID . . 2A 2D 2E 2F 2G 2H 21 N A M E 1 AMOUNT R E F E R E N C E 1 NAME | I AMOUNT I 1 i R E F E R E N C E I . 3A . 3B . 3C . 3D <3& . 3F .• 3G . 3H . 31 E. E T F . A T l C R A P H I C  I S O T O P I C OR P H Y S I C A L E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F . NO. P E T R O C R A P H I C D E S C R I P T O R S . 4B . 4C . 4D . 4E . 4F . 4G . 4H . 41 E R U P T I V E T Y P E , MODE O F O C C U R R E N C E B N P Y R O C L A S T I C B O R I N C D I K E BP R O P Y - L A V A A A NO I N F O R M A T I O N BO S C O R I A BR S E C R E C A T I O N A B A A B S S I L L A C A C C L O M E R A T E B T S P A T T E R A D A S H B U S T O C K A E A S H F L O U B V S U B A E R I A L A F B A T H O L I T H B U S U B A Q U E O U S A C B L O C K L A V A BX S U B M A R I N E A H BOMB B Y T E P H R A A l B O S S BZ T U F F A J B R E C C I A C A T U F F B R E C C I A A K C O N E S H E E T CB V E I N A L D I A T R E M E CC V O L C A N I C AM D I K E ( D Y K E ) C D V O L C A N I C L A S T I C A N DOME C E U E L D E D T U F F AO E X T R U S I V E C F X E N O L I T H A P F L O U A O F L O U B R E C C I A DP O T H E R ( A D O T°N AR H Y A L O C L A S T I T E A 5 H Y P A B Y S S A L T E X T U R E . S T R U C T U R E A T I C N I M B R I T E C R A I N S I Z E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) DO NO I N F O R M A T I O N B R E C C I A A U L A C C O L I T H DR A M Y C D U L A R A X L A P I L L I DS A P H A N I T I C A Y L A V A DT A P H Y R I C A 2 L A V A L A K E DU A P L 1 T I C B A L A Y E R E D I N T R U S I O N DV B A N D E D BB L O P O L I T H DU C O A R S E B C N E C K DX C R Y P T O C R Y S T L N . BD N U E E A R D E N T E DY C U M U L A T E B E N O D U L E D2 D E V 1 T R I F I E D B F P A H O E H O E E A D I S C R Y S T A L L I N E BO P H A C O L I T H E B D O L E R I T I C B H P I L L O U L A V A E C E U C R Y S T A L L 1 N E B I P I P E E D E O U I C R A N U L A R B J P L U C EF. F E L S I T I C BK P L U T O N < ^ £ > F I N E B L P L U T O N I C T E H _ C L A S S Y BM P U M I C E £ t f l _ 3 F 0 1 - I A T E D GE & F V lW O v ^ O Y A O t - p l -p a ' V v A . \ 0 » Y M V p E J C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T I C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E Q H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P 1 L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R I C E U L I N E A T E D EX M A S S I V E E Y M E D I U M E 2 M I C R O C R Y S T A L L I N E F A M I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K 1 L I T 1 C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F l O R B I C U L A R F J P E C M A T I T I C F K P E R L 1 T 1 C F L P H A N E R I T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K 1 L I T I C F P P O R P H Y R I T I C F O P U M I C E O U S FR R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T I C F U S P I N I F E X F X S U B O P H I T I C F Y T R A C H Y T 1 C F Z V A R I O L I T I C CA V E S I C U L A R C B V I T R E O U S CC V I T R O P H Y R I C C D X E N O C R Y S T 1 C HY O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N IA N O I N F O R M A T I O N IB F R E S H IC A L T E R E D I D S L I C H T L Y M O D E R A T E L Y F E X T E N S I V E L Y q p I J O T H E R ( A D D I N B L O C K C ) T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R 1 T 1 C IN D E U T E R I C IO F E N I T I C IP H Y D R A T E D IO H Y D R O T H E R M A L IS L E A C H E D O > 1 £ T A M 0 R P H I C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L 1 T I C I X P Y R 1 T I C I Y S A U S S U R I T I C I Z S E R 1 C I T I C J A S E R P E N T I N I Z E D J B S 1 L 1 C I F I C A T I O N J C S O L F A T A R I C J D . U E A T H E R E D J J O T H E R ( A D D I N B L O C K 0 ) JE C«roon»-V\c zeo\\'V\c - 89 -F . M I N E R A L A S S E H P L A C E N A NO I N F O R M A T I O N F E L D S P A R S . F O I D S NB FELDSPAR £"NC? ALKALI FELDSPAR ND ANORTHOCLASE N E K-FELDSPAR N F MICROCLINE NC MICROPERTHITE NH ORTHOCLASE N l PER THITE N J SANIDINE OK » \ 5 i V « . NH ANTIFERTHITE P L A C I 0 C L A 3 E N A - P L A C I O C L A S E 1 N T C R H E D . P L Art. C A - P L A C I O C L A S E AL Q I T E A I . B I T E - O L I C O C L A S E ' O L I C O C L A S E O L I C O C L . - A N D E S N . A N D E S I N E A N D S N - L B R D R T . L A B R A D O R I T E L D R P R T . - D V T U N T BVTOVINI T E NS NT AMPHITOLOICS A MICA B BIOTITE LEPIDOLITE MUSCOVITE PHLOCOPITE PF SERICITE P X P A T A G ^ e n T r e PO CHLORITE PH SERPENTINE P9 OTHER (ADD IN BLOCK Ol OA OB OC OD Of OE OF OO OH OI A H P H I B O L E B A S A L T I C H N B L N O . C U M M I N O T O N I T E HORNBLENDE P«T<JR Jl+e ALKALI AHPHIBOLE ARFVEDSONITE B A R K E V I K I T E HASTINCSITE H A E R 3 U T I T E OJ KATOPHORITE OK ' RIEBECKITE OL SCD1C OM AENICMATITE ON COSSVRITE OO RHON1TE 09 OTHER (ADO IN BLOCK C) PYROXENES. PYROXENOIDS. OLIVINES" RA PYROXENE N Y B Y T U N T . - A N O R T H I T E NZ A N O R T H I T E RO RR N 9 O T H E R ( A D D IN B L O C K C> RS R T O A F E L D S P A T H O I D RU OB A N A L C I M E RV O C C A N C R I N I T E R U 00 H A U " N E RX O E K A L S I L I T E O F L E U C 1 T E RY O C N Z P H E L I N E RZ O H N O S E A N R l 01 P S E U D O L E U C I T E O J S O D A L I T E R 9 09 O T H E R ( A D D IN B L O C K 0) S A S B P H Y L L 0 S I L I C A T E 3 , D O U P L E S C C H A I N S I L I C A T E S . A N D S D RB O R T H O P Y R O X E N E RC B R 0 N Z 1 T E RD E N 3 T A T I T E R E H Y P E R S T H E N F R F CL1 N O P Y R O X E N E RC A U C I T E R H O I O » S I O E R I C I O P S I C E - A U C I T E R J C H R O n r - D I O H S l p E RH F E ^ R O A U C I T E R L " E D E N B E R C I T E RM H I C H — A L A U C I T E RN P 1 C E 0 N I T E RO S U B C A L C 1 C A U C I T E RP T I T A N A U C I T E ALKALI PYROXENE ACMITE ACMITE-DIOPSIDE AECIRINE AEOIRINE—AU1ITE A E C 1 R I N E - D I 0 F S I D E OHPHACITE SODIC P E C T O L I T E U O L L A S T O N I T E S P O D U M E N E  O T H E R ( A D D IN B L O C K C ) O L I V I N E F A Y A L I T 1 C F U f l S T E R I T I C MONT I C E L L I T E S 9 O T H E R ( A D D IN B L O C K 0) OTHER SILICATES TA TB TC TD TE TF TC TH TI T J TK TL " TH TN TO TP TO TR ALLANITE ALUMINO-SILICATES ANDALUSITE KYANITC SILL IMANITE BERYL CLAY MINERAL(S) CORDIERITE EPIDOTE OARNET ALMANDINE ANORAOITE CROSSULAR MELANITE PYROPE SPESSARTINE MELILITE TITANITE. ' SPHENE TOPAZ TS TOURMALINE TT VESUVIANITE TU ZEOLITE(S) TV CHABAZITE TU HEULANDITE TX LAUMONTITE NATROLITE PHILLIPSITE ZIRCON T2 ZOISITE T 9 O T H E R ( A D D IN B L O C K C) UA ANATASE UB BROOKITE UC CASSITER1TE UD CORUNDUM UE HEMATITE UF ILMENITE UU L 1MONI TE UH PEROVSHITE UI PSEUDC3R00KITE UJ RUTILE SILICA CRCVP UK CRISTOBALITE UL CRVPTOCRYST. GUAR TZ TR1DYMITE UO SPINEL UP CHROMITE UO MERC Yl. ITE UR MAGHEMITE US MACNETITE UT PLEONASTE UU TITAN0MACNET1TE UV ULVGSP1NEL P UU OPAOUES. ORES U9 OTHER (ADD IN BLOCK C> NON-OXIDES. NON-SILICATSS VA APATITE VB CARBONATE(S) VC CALCITE VD DOLOMITE VE SIDER1TE VF FLUORITE VO MONA ZITE UU OPAOUES. ORES VH NATIVE ELEMENT(SI VI SULFATE (SI VJ SULFIDE(S) VH CHALCOPYRITE VL PYRITE VM PYRRHOTITE V9 OTHER (ADD IN BLOCK C) MINERAL01OS UA CHLOROPHAEITE UB CLASS UC IDDIN0S1TE UD LEUCOXENE UE PALACONITE UF SIDEROMELANE U9 OTHER (ADD IN BLOCK C) C. ADDITIONAL NOTES - 90 -C O N T R I B U T O R ' S N A M E C O N T R I B U T I O N NO. I V J / r T i A. H F A D I N O I N F O R M A T I O N R O C K N A M E L A T I T U D E £(.44 L O N O I T U D E j ^"<^ CEOLOC.C UNIT PiTLLV HouvOT 4( VOS REFERENCE NO. 1 B E S S E N T I A L O X I D E S S 1 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO MCO C A O N A 2 0 K 2 0 j P 2 0 S C 0 2 | H 2 0 » M 2 0 - T O T A L 60.32 058 |0.10 0-3| 0-20 ^ 0| 01T US' 0./| T R A C E E L E M E N T S OR C O M P O N E N T S N A M E Ni 1 Cr V Be 2 r Mb AMOUt.'T /? u o 2-? m e j R F F E R E N C E . 1A . IC . ID . 2A 2D 2E 2F 2G 2H 21 N A M E A M O U N T R E F E R E N C E N A M E i A M O U N T 1 R E F E R E N C E 1 P. A O E S T R A T I C R A P H 1 C  I S O T O P I C OR P H Y S I C A L R E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F . NO. 31 E . P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E , MODE OF O C C U R R E N C E SB 4C '4D 4E 4F 4G 4H 41 A A N O I N F O R M A T I O N A B A A A C A C C L O M E S A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M t A H D I K E ( D Y K E ) A N DOME . A O E X T R U S I V E l * P ^ F L O U T M F F L O U B R E C C I A A A H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P 1 L L I A Y L A V A A Z L A V A L A K E B A L A Y E R E D I N T R U S I O N B B L O P O L I T H B C N E C K B D N U E E A R D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L I T H B H P I L L O U L A V A B I P I P E B J P L U O BK P L U T O N B L P L U T O N I C BM P U M I C E B N P Y R O C L A S T I C E J C L O M E R O P O R P H . BO R 1 N O D I K E E K C N E I S S I C B P R O P Y - L A V A E L C R A N I T 1 C BQ S C O R I A E M C R A N O P H Y R . - C BR S E C R E C A T I ON E N C R A N U L 1 T I C B S S I L L E O C R A P H I C BT S P A T T E R E P H O L O C R Y S T A L L I N E B U S T O C K E Q H O L O H Y A L I N E B V S U B A E R I A L ER H Y A L I N E B U S U B A Q U E O U S E S H Y A L O P I L I T 1 C BX S U B M A R I N E E T H Y P O C R Y S T A L L I N E B Y T E P H R A E U I N T E R 3 E R T A L BZ T U F F E V L A M P R C P H Y R I C C A T U F F B R E C C I A E U L I N E A T E D CB V E I N EX M A S S I V E C C V O L C A N I C E Y M E D I U M C D V O L C A N I C L A S T I C E Z M I C R O C R Y S T A L L I N E C E W E L D E D T U F F F A M 1 C R O C R A P H I C C F X E N O L I T H F B M I C R O L I T I C O T H E R ( A D D I*N B L O C K F C M I C R O P E C M A T I T I C DP C ) F D M I C R O P O I K I L I T I C F E M I C R O P O S P H Y R I T I C T E X T U R E . S T R U C T U R E . F F M I C R O S P H E R U L I T I C C R A I N S I Z E F C M Y R M E K I T I C F H O P H I T I C DO NO I N F O R M A T I O N F I O R B I C U L A R F J P E C M A T I T I C DR A M Y C D U L A R F K P E R L 1 T I C DS A P H A N 1 T I C F L P H A N E R I T 1 C DT A P H Y R I C F M P I L O T A X I T I C DU A P L 1 T I C F N P L A T Y DV B A N D E D F O P O I K I L I T I C DU C O A R S E F P P O R P H Y R I T I C DX C R Y P T O C R Y S T L N . F O P U M I C E O U S DY C U M U L A T E FR R E C R Y S T A L L I Z E D DZ D E V I T R I F I E D F S S C H I S T O S E EA D I S C R Y S T A L L I N E F T S C O R I A C E O U S E B D O L E R I T I C F U S E R I A T E EC E U C R Y S T A L L I N E F V S P H E R U L I T I C ED E 0 U 1 C R A N U L A R F U S P I N I F E X E F F E L S I T I C F X S U B O P H I 7 I C EO F I N E C T H E J ' T R A C H Y T I C E H C L A S S Y F Z VAR I O L I T 1C E I F O L I A T E D ( t f V y E S I C U L A R Gc & F V\\^ p*\ < V i o r r \ o v - » U \ C P 0 , f l \ A . \ 0 Y T U v p V l \ C C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C HY O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N IB F R E S H I C A L T E R E D I D S L I C H T L Y " E ^ M O D E R A T E L Y E X T E N S I V E L Y <3> I J O T H E R ( A D D I N B L O C K 0) T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T I C I N D E U T E R I C 10 F E N I T I C I P H Y D R A T E D 1 0 H Y D R O T H E R M A L IR L E A C H E D rt]>J M E T A M O R P H I C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T 1 C I U P R O P Y L I T I C IX P Y R I T I C I Y S A U S S U R I T I C IZ S E R 1 C I T I C J A S E R P E N T . I N I Z E D J B S I L I C I F I C A T I O N J C S O L F A T A R I C <3^UEATHERED J J O T H E R ( A D D I N B L O C K C ) d £ i > Car - tonn - V \C JF PYMJ.V\Y\ ;V~ \c - 91 -F. M I N E R A L A S S E M B L A G E N A NO I N F O R M A T I O N F E L D S P A R S . F O I D S N E NO NH N t N J F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E H I C R G P E R T H I T E O R T H O C L A S E P E R T H 1 T E S A N I O I N E P 9 O T H E R ( A D D I N B L O C K C ) OA OB OC 0 0 Q? O E O F 0 0 OH 0 1 A H P H I B O L E B A S A L T I C H N B L N D . C U H M 1 N 0 T 0 N I T E H O R N B L E N D E P n r q R f i+e A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S 1 T E H A E R 3 U T I T E O J K A T O P H O R I T E T S T O U R M A L I N E OK R I E B E C K I T E T T V E S U V I A N I T E O L S O D I C T U Z E O L I T E ( S ) T V C H A B A M T E o n A E N I C H A T I T E T U H E U L A N O I T E ON C O S S Y R I T E TX L A U M O N T I T E 0 0 R HON I T E T V N A T R O L I T E T 2 P H I L L I P S I T E 0 9 O T H E R ( A D D I N B L O C K 0 ) T I Z I R C O N T Z Z O I S I T E PYROXENES. PYWarFNQIDS. OLIVINES NA A N T I P E R T H I T E RC RD N L P L A C I 0 C L A 3 E R E N A - P L A C I O C L A S E NN I l . TERMCD. P L A O . R F NO C A - P L A C I O C L A S E RC NP A L O I T E . RH NO A I . B I T E - O L I C O C L A S E RI NR O L I C O C L A S E R J NS O L I C O C L . - A N D E S N . RK MT A N D E S I N E R L WU A N D S N - L 3 R 0 R T . RM N V L A 3 R A D U R I T E RN UU L D R P R T . - B Y T U N T . RO NX B Y T O M N I T E RP NY I fYTUNT. - A N O R T H I T E NZ A N O R T H I T E RO RR N 9 OTHER ( A D D IN B L O C K C ) RS RT OA F E L D S P A T H O i D RU OB A N A L C 1 ME RV O C C A N C R I N I T E P U OD H A U W N E RX O E K A L S I L I T E O F L E U C I T E RY 0 0 N Z P H E L I N E R2 OH N O S E A N R l 0 1 P S E U D O L E U C I T E O J S O D A L I T E R 9 0 9 O T H E R ( A D D IN 8 L 0 C K 01 S A 5 8 P M V L L O S t L K A T E S . D O U P L E SC C H A I N S I L I C A T E S . A N D SD A r . P M 1 0 3 . O I C S 5 9 P A M I C A <s> B I O T I T E 0TH1-L E P I O O L I T E M U S C O V I T E T A P H L O C O P I T E S E R I C I T E , T B n p A T « c ^ 0 r » i T « T C P C C H L O R I T E ' T D P H S E R P E N T I N E T E P Y R O X E N E O R T H O P Y R O X E N E BROfJZ I T E E N S T A T I T E H Y P E R S 7 H E N E C L I N O P Y R O X F . N E A U C 1 T I . D I C ° S I D E O : O P S : C E - A ' J C : T E C H R C M E - D t O V S l O E F E S R O A U C I T E H E D E N B E R C I T E H I C H - A L A U C I T E P I C E O N I T E S U B C A L C I C A U C I T E T I T A N A U C I T E A L K A L I P Y R O X E N E A C M I T E A C M 1 T E - D I 0 P S I D E A E C I R I N E A E C I R : N E - A U C : T E A E C I R I N E - D I 0 F S 1 0 E O H P H A C I T E S O D I C P E C T O L I T E U O L L A S T O N I T E S P O O U M E N E  O T H E R ( A D D I N B L O C K 01 O L I V I N E F A V A L I T I C F O R S T E R I T I C MONT I C E L L I T E  O T H E R ( A D D I N B L O C K C ) O T H E R S I L I C A T E S A L L A N I T E A L U M I N 0 - S I L 1 C A T E S A N O A L U S I T E K Y A N I T E S I L L I M A N I T E B E R Y L C L A V M I N E R A L ( S ) C O R D I E R I T E E P I D O T E O A R N E T A L H A N D I N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L I L I T E , T I T A N I T E . S P H C N E T O P A Z T J T K T L T H T N T O T P T O TR T 9 O T H E R ( A D D I N B L O C K C ) U A A N A T A S E U 3 BROOK I T E UC C A S S I T E R I T t UD C O R U N O U M U E H E M A T I T E U F I L M E N I T E UU L I M O N I T E U H r E R O V S K I T E U I P S E U D C 3 R 0 0 K I T E U J R U T I L E S I L I C A C P O U P U K C R I S T O B A L I T E U L C R Y P T O C R Y S T . CXiri} G U A R T Z ^ T j f j T R I D Y H ' . T E U O S P I N E L UP C H R O M I T E . UO H E R C Y f . I T E UR M A C H E M I T E U S M A C N E T I T E U T P L E O N A S T E U U T I T A N O M A G N E T I T E U V U L V O S F I N E L P C_iZU> O P A O U E S . O R E S U 9 O T H E R ( A D D IN B L O C K C> N O N - O X I D E S . N O N - S I L I C A T E S i t o V ' A < V A A P A T I T E V B C A R B O N A T E ( S ) V C C A L C I T E VD D O L O M I T E V E S I C E R I T E V F F L U O R I T E V C M O N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S ) V I S U L F A T E ( S ) V J S U L F I D E ( S 1 V K C H A L C O P Y R I T E V L P Y R I T E V M P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 0 ) M I N E R A L O I D S U B UC UD WE C H L O R O P H A E I T E O L A S S I D D I N O S I T E L E U C O X E N E P A L A C O N I T E S I D E R O M E L A N E U 9 O T H E R ( A D D I N B L O C K C l C. A D D I T I O N A L N O T E S "Sc^ vple A " - A-N T S I 1°^ / C O N T R I B U T O R ' S N A n E C O N T R I B U T I O N NO. H F A D I N O I N F O R M A T I O N R O C K N A M E L A T I T U D E i(,/\4°f^ L O N G I T U D E j£j ,(,^ <V> C E O L O O I C U N I T Pftjjj lUo U f\) ^1 N>5 i R E F E R E N C E NO. 8 ESSENTIAL OX IDES E 1 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO MCO C A O N A 2 0 K 2 0 P 2 0 3 C d 2 H I D * H 2 0 - T O T A L j 65o4 Oil O'OST 0 ST. 0.44 / l o g O.O© 0.06 Tel T R A C E E L E M E N T S OR C O M P O N E N T S . 1A . IC . ID • 5 A NAME I O 1/ 5 r (ik M4> AMOUNT o 14 ft RFFERENCE N A M E | AMOUNT t R E F E R E N C E 1 SD 2E 2F 2G 2H 21 NAME AMOUNT R E F E R E N C E P. A P E e 6 Tr ,AT ICRAPH , c g ^ . ( Q v b ^ ^ ^ I S O T O P I C OR P H Y S I C A L ' R E F E R E N C E NO. Y E A R S 1 M E T H O D M A T E R I A L R E F . NO. . 4B . 4C .'4D . 4E . 4F . 4G . 4H . 41 P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E . MODE O F O C C U R R E N C E A A NO I N F O R M A T I O N AB A A A C A C C L O M E R A T E AD A S H A E A S H F L O W A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M E A M P I K E ( D Y K E ) A N DOME A O E X T R U S I V E A P F L O U AO. F L O W B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A 2 L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H B C N E C K BD N U E E A R D E N T E B E N O D U L E S F P A H O E H O E B C P H A C O L I T H B H P I L L O W L A V A B I P I P E B J P L U C BK P L U T O N B L P L U T O N I C BM P U M I C E BN P Y R O C L A S T I C E J C L O M E R O P O R P H . BO R I N O D I K E E K C N E I S S I C BP R O P Y ' L A V A E L C R A N I T I C 8 0 S C O R I A EM C R A N O P H Y R r C BR S E C R E C A T I O N E N C R A N U L I T I C B S S I L L E O C R A P H I C BT S P A T T E R E P H O L O C R Y S T A L L I N E B U S T O C K E O H O L O H Y A L I N E BV S U B A E R 1 A L ER H Y A L I N E B U S U B A Q U E O U S E S H Y A L 0 P 1 L I T I C BX S U B M A R I N E E T H Y P O C R Y S T A L L I N E JUL, T E P H R A E U I N T E R 3 E R T A L / B Z * J U F F E V L A M P R C P H Y R I C T U F F B R E C C I A E U L I N E A T E D C B V E I N EX M A S S I V E CC V O L C A N I C E Y M E D I U M C D V O L C A N I C L A S T I C E Z M I C R O C R Y S T A L L I N E C E W E L D E D T U F F F A M I C R O C R A P H I C C F X E N O L I T H F B F C M I C R O L I T I C M I C R O P E C M A T I T I C DP O T H E R ( A D D l"N B L O C K C ) F D F E H I C R O P O I K I L I T I C M I C R O P O R P H Y R I T I C T E X T U R E . S T R U C T U R E . F F M 1 C R O S P H E R U L I T I C C R A I N S I Z E F O M Y R M E K I T I C F H O P H I T I C DO NO I N F O R M A T I O N F I F J O R B I C U L A R P E C M A T I T I C DR A M Y C D U L A R F K P E R L I T I C DS A P H A N I T I C F L P H A N E R I T I C P T A P H Y R I C F M P I L O I A X I T I C DU A P L I T I C . F N P L A T Y DV B A N D E D F O P O I K I L I T I C DU C O A R S E F P P O R P H Y R I T I C DX C R Y P T O C R Y S T L N . F O P U M I C E O U S DY C U M U L A T E FR R E C R Y S T A L L I Z E D DZ D E V I T R I F I E D < F ? S C H I S T O S E E A D I S C R Y S T A L L I N E S C O R I A C E O U S E B D O L E R I T I C F U S E R I A T E E C E U C R Y S T A L L I N E F V S P H E R U L I T I C E D E 0 U 1 C R A N U L A R F U S P I N I F E X EF FELSITIC £EpFINE ^"EH CLASSY ^CT-^F CILIATED <X e u A w V i c p«V'>A'vovYMYpVi'ic FX SUBOPHITIC {"FY^JTRACHYTIC FT VARIOLITIC OA VESICULAR C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C H Y O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N IB F R E S H I C A L T E R E D I D S L I C H T L Y I E M O D E R A T E L Y E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K C ) T Y P E O F A L T E R A T I O N I K NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T I C I N D E U T E R I C I O F E N I T I C I P H Y D R A T E D 1 0 H Y D R O T H E R M A L #L E A C H E D M E T A M O R P H I C M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R I T I C I Y S A U S S U R I T I C 11 S E R I C I T I C J A S E R P E N T I N I 2 E D J B S I L I C 1 F I C A T I 0 N J C S O L F A T A R I C J D - W E A T H E R E D J J O T H E R ( A D O IN B L O C K C ) O E Car-Vjo na-ViC JF PYM2.V\Y\\V\c. - 93 - - 33 -g . M I N E R A L A S S E M B L A G E N A NO I N F O R M A T I O N F E L D S P A R S . F O I D S NB N S N E N F NS NH N l N J O K F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E H I C R O P E R T H I T E OR T H O C L A S E P E R T H I T E S A N I D I N E AMPHIOO-J1CS P A P 8 P C P F » X P O M I C A B I O T I T E L E P I D O L 1 T E M U S C O V I T E P H L O C O P I T E S E R I C I T E . f * T A ( ^ J P t T C C H L O R I T E S E R P E N T I N E P* OTHER (ADD IN BLOCK 6 ) OA 08 O C & (BE-ST OA O H 0 1 A H P H I B O L E B A S A L T I C H N B L N D . C U H M I N O T O N I T E H O R N B L E N D E P a r ^ R f i+e A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K 1 T E H A S T I N C S I T E K A E R S U T I T E O J OK O L on O N on K A T O P H O R I T E R I E B E C K I T E S O D I C A E N 1 C M A T I T E C O S S Y R I T E R H O N I T E NK A N T l f - E R T H I T E RC • RD P L A C I O C L A S E R E N A - P L A C I O C L A S E NN I N T C R M E D P L A O . R F NO C A - P L A C I O C L A S E RC NP A L B I T E R H NO At.B I T E - O L 1 C O C L A S E R I NR O L I C O C L A S E R J NS O L I C O C L - A N D E S N . RK NT A N C E S I N E . R L NU A N D S N — L B R D R T . RM N V L A D R A D G M T E RN NU L C R P R T . - B Y T U N T . RO NX B Y T 0 V 1 N I T E RP N'T B Y T U N T . - A N O R T H I T E A N O R T H I T E RO RR N f l O T H E R ( A D D IN B L O C K C> RS RT O F E L D S P A T H O I D RU OB A N A L C I M E R V O C C A N C R I N I T E RU OD H A U V N E RX O C K A L S I L I T C O F L E U C I T E RY 0 0 N Z P H E L I N E R2 OH N O S E AN R l 01 P S E U D O L E U C I T E O J S O D A L I T E R 9 m O T H E R ( A D D IN B L O C K C l S A S 3 P H Y L L O S I L K A T E S . D O U P L E S C C HA IN S I L I C A T E S . AND SD 0 9 O T H E R ( A D D I N B L O C K C ) P Y R O X E N E S . P Y R O X E N O I D S . O L I V I N E S " P Y R O X E N E O R T H O P Y R O X E N E B R O N Z I T E E N S T A T I T E H Y P E R S T H E N F C L I N O P Y R O X E N E A U C I T E D I O P S I C E D : C . P S I D E - « U O : T E C ^ R C n E - D I O P S I D E F E ^ R O A U C I T E H E D E N D E R C I T E H I C H - A L A U C I T E P I C E 0 N 1 T E S U P C A L C I C A U C I T E T I T A N A U C I T E A L K A L I P Y R O X E N E A C M 1 T E A C H I T E - D I O P S I D E A E C I R I N E A E C I R : N E - A U C ; ^ E A E C I R I N c - D I O r S I D E O r . P H A C I T E S O D I C P E C T O L I T E U O L L A S T O N I T E S P O D U M E N E O T H E R ( A D D IN B L O C K 0 ) O L I V I N E F A Y A L I T I C F C R S T E R I T 1 C M C N T I C E L L I T E S 9 O T H E R ( A D D IN B L O C K C I O T H E R S I L I C A T E S TA TB TC TD T E TF TC T H TI TJ TK TL " T H TN TO T P TO TR A L L A N I T E A L U M I N 0 - S I L 1 C A T E S A N D A L U S I T E K Y A N I T E S I L L I M A N I T E B E R Y L C L A Y H I N S R A L ( S ) C O R O I E R I T E E P I D O T E OAR N E T A L M A N D 1 N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L 1 L I T E T I T A N I T E . S P H E N E T O P A Z TS TT TU TV TU TX TY T O U R M A L I N E V E S U V I A N I T E Z E O L I T E I S I C H A B A Z I T E H E U L A N O I T E L A U M O N T I T E N A T R O L I T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D I N B L O C K 0 ) U A U 3 UC U D U E U F U U U H U l U J <TjM^ U N A N A T A S E B R O O K I T E C A S S I T E R I T E C O R U N D U M H E M A T I T E ILMCNITE L I M O N I T E P E R O V S H I T E . P S E U D C 3 R C 0 K I T E R U T 1 L E S I L I C A C R O U P C R 1 S T 0 5 A L I T E C R » P T O C R Y S T . O U A R T Z T R I D Y M I T E S P I N E L C H R C M I T E H E R C Y M T E M A S H E M I T E M A C N E T I T E P L E O N A S T E T I T A N O M A G N E T I T E \ _ . L , U L V O S P I N E L *** ?<CoX*< O P A O U E S . O R E S U O UP UO UR U S U T U U U V U 9 O T H E R ( A D D I N D L O C K C l N O N - O X I D E S . N O N - S I L I C A T E S V A A P A T I T E V B C A R B O N A T E ( S I V C C A L C I T E V D D O L O M I T E V E S 1 D E R I T E V F F L U O R I T E VO M O N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T ( 5 1 V I S U L F A T E ( S 1 V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E vn P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 0 ) M I N C R A L O I D S UB UC UD UE C H L O R O P H A E I T E C L A S S I D D I N O S I T E L E U C O X E N E P A L A C O N I T E S I O E R O M E L A N E U9 O T H E R ( A D D I N D L O C K 01 0. A D D I T I O N A L N O T E S NTS | ( ) / f- f | A. H f i A D I N O I N F O R M A T I O N R O C K N A M E />. I L A T I T U D E 44^ /0 L O N O I T U D E B E S S E N T I A L O X I D E S CONTRIBUTOR'S NAME C O N T R I B U T I O N NO. C E O L O C I C U N I T R E F E R E N C E NO. 1 S I 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO j MCO C A O N A 2 0 K 2 0 P 2 0 3 C d 2 | H 2 0 * H 2 D - T O T A L c\sr} I3.4C 0.14 hit +-8ft Z4/ (Ml U-Bf a n . too. T R A C E E L E M E N T S OR C O M P O N E N T S NAME Hi ( r S r ft--, "CT—1 » AMOUNT IX o R F F E R E N C E C I 3 . IC . ID 1 N A M E 1 ! AMOUNT 1 R E F E R E N C E 1 NAME I 1 1 AMOUNT j i R E F E R E N C E I P, A P E S T R A T I O R A P H I C  I S O T O P I C OR P H Y S I C A L R E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F , NO. P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E , < 2 s > . 4B . 4C .'4D . 4E . 4F . 4G . 4H . 41 MODE O F O C C U R R E N C E BN P Y R O C L A S T I C BO R I N S D I K E BP R O P Y - L A V A £ Q } N 0 I N F O R M A T I O N BO S C O R I A BR S E C R E C A T I O N AB A A B S S I L L A C A C C L O M E R A T E BT S P A T T E R A D A S H B U S T O C K A E A S H F L O W B V S U B A E R I A L A F B A T H O L I T H BU S U B A O U E O U S A O B L O C K L A V A BX S U B M A R I N E A H BOMB BY T E P H R A A l B O S S BZ T U F F A J B R E C C I A CA T U F F B R E C C I A A K C O N E S H E E T CB V E I N A L D I A T R E M E C C V O L C A N I C AM D I K E ( D Y K E ) CO V O L C A N I C L A S T I C A N DOME C E U E L D E D T U F F A O E X T R U S I V E C F X E N O L I T H A P F L O U A O F L O U B R E C C I A DP O T H E R ( A D D J"N AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L T E X T U R E . S T R U C T U R E A T I C N I M B R I T E C R A I N S I Z E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A DO NO. I N F O R M A T I O N A U L A C C O L I T H DR A M Y C D U L A R AX L A P I L L I DS A P H A N I T I C A Y L A V A DT A P H Y R I C A Z L A V A L A K E DU A P L 1 T I C B A L A Y E R E D I N T R U S I O N DV B A N D E D BB L O P O L I T H D U C O A R S E B C N E C K DX C R Y P T O C R Y S T L N . BO N U E E A R D E N T E DY C U M U L A T E B E N O D U L E DZ D E V I T R I F I E D S F P A H O E H O E E A D I S C R Y S T A L L I N E B O P H A C O L I T H E B D O L E R I T I C B H P I L L O U L A V A E C E U C R Y S T A L L I N E B l P I P E E D E O U I G R A N U L A R B J P L U O E F F E L S I T I C BK P L U T O N £ E 8 p F I N E E H C L A S S Y B L P L U T O N I C BM P U M I C E E I F O L I A T E D E J C L O M E R O P O R P H . E K C N E I S S 1 C E L C R A N I T 1 C EM C R A N O P H Y R TC E N C R A N U L T T I C E O C R A P H I C E P H D L © C R Y S T A L L I N E EO H O L O H Y A L I N E E F H Y A L I N E E S H Y A L O P I L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R 1 C E U L I H E A T E D / € T ) H A S S 1 V £ t Y M E D I U M E Z M I C R O C R Y S T A L L I N E F A M I C R O C R A P H I C F B M I C R O L I T I C F C H I C R O P E C M A T I T I C F D M I C R D P O I K I L I T I C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O H Y R P E H I T I C F H O P H I T 1 C F I O R B I C U L A R F J P E C M A T I T I C F K P E R L I T 1 C F L P H A N E P I T 1 C F M P I L O T A X I T I C F N P L A T Y F O P O I K I L I T I C F P P O R P H Y R I T I C F O . P U H I C E O U S / ^ T R > R E C R Y S T A L L I Z E D S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T I C F U S P I N I F E X F X S U B O P H I T I C F Y T R A C H Y T I C F Z V A R I O L I T I C OA V E S I C U L A R C B V I T R E O U S G C V I T R O P H Y R I C C D X E N O C R Y S T I C H Y O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A N O I N F O R H A T I O H I B F R E S H I C A L T E R E D I D L . S L I G H T L Y C~fTj M O D E R A T E L Y T f E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K 0 ) T Y P E O F A L T E R A T I O N I K N O I N F O R M A T I O N I L A R C I L L I T I C I M C H L O R I T I C I N D E U T E R I C 10 F E N I T I C I P H Y D R A T E D 10 H Y D R O T H E R M A L I R L E A C H E D • " I T ^ I E T A M O R P H I C T T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C I X P Y R I T I C I Y S A U S S U R I T I C I Z S E R I C I T I C J A S E R P E N T I N I Z E D J B S I L 1 C I F I C A T I O N J C S O L F A T A R I C J D W E A T H E R E D J J O T H E R ( A D D I N B L O C K C ) GE evAwvYic JE Cav-Vjo no.-V\c J f pv>e.V\Y\\V\c. —95 -T. M I N E R A L A S S E H B L A C E NA NO I N F O R M A T I O N F E L D S P A R S . F O I D S NB ND N E N F N C NM NI N J OK N N N O F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E H I C P O P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I D I N E ^ A N T I P E R T H I T E P L A C I O C L A 3 E N A - P L A C I O C L A S E I l . T E R M E D . P L A f l . C A - P L A C I O C L A S E A L I l I T E AMPHI O P I O I D S cp P D PE PF f l PO PM M I C A B I O T I T E L E P I O O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E . C H L O R I T E 6 E R P E N T I N E PT OTHER (ADD IN BLOCK 0) OA OB OC OD W OE OF ao OH at A M P H I B O L E B A S A L T I C H N B L N D . C U M M 1 N O T O N I T E H O R N B L E N D E A L K A L I A M P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 3 U T I T E O J OK O L OM ON on K A T O P H C R I T E T S T O U R M A L I N E R I E B E C K I T E T T V E S U V I A N I T E S O D I C T U Z E O L I T E ( S ) T V C H A B A Z I T E A E N 1 C M A T I T E T U H E U L A N D I T E C O S S V R I T E T X L A U M O N T I T E R H O N I T E T V N A T R O L I T E T I P H I L L I P S I T E O T H E R ( A D D IN B L O C K C> Z I R C O N T 2 Z O I S I T E P Y R O X E N E S . P Y R O l F N O I D S . O L I V I N E S " NO A l . B I T E - O L I C O C L A S E R l NR 0 L 1 C C C L A S E R J NS O L I C O C L . - A N D E S N . RK NT A N D E S I N E R L N U A N D S N - L B R D R T . RM NV L A 3 R A 0 0 M T E RN NU L C R D R T . — B Y T U N T RO NX B Y T 0 V 1 N I T E RP NY B Y T U N T . — A N O R T H I T E NZ A N O R T H l T E RO RR N 9 O T H E R ( A D D IN B L O C K C ) R S R T OA F E L D S P A T H O I D R U 3B A N A L C 1 M E P V oc C A N C R 1 N I T E RU OD H A U Y N E R I O E K A L S I L I T E 0 « L E U C I T E RY O C N ' P H E L I N E RZ O H N O S E A N R l 01 P S F . U D O L E U C 1 T E O J S O D A L I T E R 9 0 9 O T H E R ( A D D IN B L O C K 0 ) S A S 3 P H Y L L O S I L I C A T E S . D O U B L E S C C H A I N S I L I C A T E S . A N D S D R A P Y R O X E N E RB O R T H O P Y R O X E N E RC B R O N Z I T E RD E N S T A T I T E R E M Y P E R S T H E N E C L I N O P Y R O X E N E A U C I T E C ! 0 » S I P E C I O P S I C E - A U C I T F C H R C n E - D I O P S I D E F E 5 R 0 A U C I T E H E D E N D E R C I T E HI CM—AL A U C I T E P I C = D N I T E S U f T A L C I C A U C I T E T I ' A N A U C I T E A L K A L I P Y R O X E N E A C M I T E ACMITE-DIOPSIOE AECIRINE AECIR:NE-AUCI-E A E C l R I N c - D l O F S I D E O M P H A C I T E S O D I C P E C T O L I T E U O L L A S T O N I T E S P O D U M E N E  O T H E R ( A D D IN B L O C K O ) O L I V I N E F A Y A L I T I C F U R S T E R I T I C M O N T I C E L L I T S S 9 O T H E R ( A D D IN B L O C K 0 ) O T H E R S I L I C A T E S TB TC TO TE TF TC TH TI TJ TK TL " TM TN TO TP TO TR A L L A N I T E A L U M I N O - S I L I C A T E S A N D A L U S I T E K Y A N I T E S I L L I H A N I T E B E R Y L C L A Y H I N £ R A L ( S > C O R D I E R I T E E P I D O T E O A R N E T A L M A N D I N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L I L I T E T I T A N I T E . S P H E N E T O P A Z T 9 O T H E R ( A D D I N B L O C K 01 U A U 3 U C UO U E U F UO U H U I U J UO UR U S U T U U U V U U A N A T A S E BROOKITE CASSITERITE CORUNDUM HEMATITE ILMENITE LIMONITE PEROVSKITE PSEUDC3R00KITE RUTILE SILICA CROUP CRISTOBALITE CRYPTOCRYST. OUARTZ T R 1 D Y M I T E SPINEL CHRCMITE MERCYNITE M A S W E M I T E MACNETITE PLEONASTE TITANOMACNETITE U L V C J S P I N E L W * P ' OPAQUES. ORES c„VA< U S O T H E R { A D D I N B L O C K C ) N O N - O X I D E S . N O N - S I L I C A T E S V A A P A T I T E V B C A R B O N A T E ( S I V C C A L C I T E V D D O L O M I T E V E S I D E R 1 T E V F F L U O R I T E VO H O N A Z I T E uu O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S > V I S U L F A T E ( S ) V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E vn P Y R R H O T I T E V 9 O T H E R ( A D D I N B L O C K 0) M I N E R A L O I D S UA U B U C U D WE U F C H L O R O P H A E I T E GLASS I D D I N 0 S 1 T E L E U C O I E N E P A L A C O N I T E E I D E R O M E L A N E U9 OTHER (ADD IN BLOCK C> O. A D D I T I O N A L N O T E S 3 4 o 96 / r T C O N T R I B U T O R ' S N A M E C O N T R I B U T I O N NO. A. H E A D I N O I N F O R M A T I O N R O C K N A M E L A T I T U D E (.\A^° h) L O N G I T U D E jll.l-fllJ g E S S E N T I A L O X I D E S G E O L O G I C U N I T R E F E R E N C E NO. " 1 S102 1 TI02 AL203 FE203 FEO | MNO | MCO | CAO NA20 K20 P203 C02 H20- H20- T OT AL S3-M O . f l ! 0 .24 . 7 . 1 0.IS 0.18 o- i t T R A C E E L E M E N T S OR C O M P O N E N T S . IC . ID . 2A 2E 2F 2G 2H 21 NAME | V't C r rWI ^ r AMOUNT ! 1370 /or 302_ RFFERENCEJ 1 N A M E •1 AMOUNT R E F E R E N C E j 1 I S 0 T 0 R 1 C OR P H Y S I C A L P. A P E 3^ S T R A T I G R A P H I C . 3B . 3C . 3D 3F 3G E F E R E N C E NO. . 3H . 3 I r ^ & . 4B . 4C . 4D . 4E . 4F . 4G . 4H . 41 P E T R 0 C R A P H 1 C D E S C R I P T O R S E R U P T I V E T Y P E - MODE OF O C C U R R E N C E NO I N F O R M A T I O N A B A A A C A O G L O M E R A T E A D A S H A E A S H F L O W A F B A T H O L I T H A G B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A H C O N E S H E E T A L D I A T R E M E AM D I K E ( D Y K E ) A N DOME A O E X T R U S I V E A P F L O W A O F L O W B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T 1 C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A Z L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H B C N E C K B D N U E E A R D E N T E B E N O D U L E B F P A H O E H O E BO P H A C O L I T H B H P I L L O W L A V A B l P I P E B J P L U G BK P L U T O N B L P L U T O N I C BM P U M I C E B N P Y R O C L A S T I C E J C L O M E R D P O R P H . B O R I N O D I K E E K C N E I S S I C B P R O P Y ' L A V A E L C R A N I T I C BO S C O R I A EM G R A N O P H Y R I C BR S E G R E G A T I O N E N C R A N U L 1 T I C B S S I L L E O C R A P H I C BT S P A T T E R E P H O L O C R Y S T A L L I N E B U S T O C K EO K O L O H Y A L I N E B V S U B A E R I A L ER H Y A L I N E aw S U B A Q U E O U S E S H Y A L 0 P I L 1 T I C BX S U B M A R I N E E T H Y P O C R Y S T A L L I N E B Y T E P H R A E U I N T E R 3 E R T A L B Z T U F F E V L A M P R O P H Y R I C C A T U F F B R E C C I A E U L I N E A T E D C B V E I N EX M A S S I V E CC V O L C A N I C E Y M E D I U M C D V O L C A N I C L A S T I C E Z M I C R O C R Y S T A L L I N E C E W E L D E D T U F F F A M I C R O C R A P H I C C F X E N O L I T H F B M I C R O L I T I C O T H E R ( A D D I N B L O C K C) F C M I C R O P E C M A T I T I C DP F D M I C R O P O I K I L I T I C F E M I C R O P O S P H Y R I T I C T E X T U R E . S T R U C T U R E . F F M 1 C R 0 S P H E R U L I T I C G R A I N S I Z E F O M Y R M E K I T 1 C F H O P H I T I C DO NO I N F O R M A T I O N F I O R B I C U L A R F J P E C M A T I T I C DR A M Y C D U L A R F K P E R L I T I C DS A P H A N I T I C F L P H A N E R I T I C DT A P H Y R I C F M P I L O T A X I T I C DU A P L I T I C F N P L A T Y DV B A N D E D F O P O I K I L I T I C DU C O A R S E F P P O R P H Y R I T I C DX C R Y P T O C R Y S T L N . F O P U M I C E O U S DY C U M U L A T E FR R E C R Y S T A L L I Z E D cz D E V I T R I F I E D F S S C H I S T O S E E A D I S C R Y S T A L L I N E F T S C O R I A C E O U S E B D O L E R I T I C F U S E R I A T E E C E U C R Y S T A L L I N E F V S P H E R U L I T I C E D EOU1 G R A N U L A R FW S P I N I F E X E F - F E L S I T I C F X S U B O P H I T I C (3-/ F I N E F Y T R A C H Y T I C G L A S S Y F Z V A R I O L I T I C E I F O L I A T E D C A V E S I C U L A R « evAwAic. O F Pel Yl "I i , ' i 0 Yn * r p h ' i c N A M E AMOUNT R E F E R E N C E Y E A R S 1 M E T H O D M A T E R I A L R E F . NO. C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T 1 C H Y O T H E R ( A D D I N B L O C K G ) S T A T E O F P R E S E R V A T I O N I A NO I N F O R H A T I O N I S F R E S H I C A L T E R E D S L I C H T L V I E ? M O D E R A T E L Y F E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K 0) T Y P E O F A L T E R A T I O N I K N O I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T I C I N C E U T E R I C 1 0 F E N I T I C I P H Y D R A T E D 10 H Y D R O T H E R M A L IR L E A C H E D ^ f l 5 > l E T A M O R P H I C T T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C I X P Y R 1 T I C I Y S A U S S U R I T I C I Z S E R I C I T I C J A S E R P E N T . I N I Z E D J B S I L I C 1 F I C A T I 0 N J C S O L F A T A R I C J D U E A T H E R E S J J O T H E R ( A D D I N B L O C K 0) JE Car-Vio noi-ViC J F pYviViri ' i V \ c - 97 . M I N E R A L A S S E H P L A C E (Sft-^  HO I N F O R M A T I O N F E L D S P A R S . F O I D S NC ND N E N F NC NH N l N J OC F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M 1 C R O C L I N E H I C R O P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I D I N E •A^.V-e. A M P H I 3 0 . 0 1 C 5 PA PS PC PD P E PF n PC PH M I C A B I O T I T E L E P I D O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E . p A T < x f i ^ f f p l T « C H L O R I T E S E R P E N T I N E P* O T H E R ( A D D I N B L O C K SI 39 OC 00 QP OE OF 00 OH 01 A H P H I B O L E B A S A L T I C H N B L N D . C U M M I N 0 T O N 1 T E H O R N B L E N D E p a r < ) a Ji+e A L K A L I A H P H I B O L E A R F V E D S O N I T E BARKEV1K1TE H A S T I N G S I T E R A E R 3 U T 1 T E O J OK O L OM ON 0 0 K A T O P H C R I T E R I E B C C K I T E S O D I C A E N 1 C M A T I T E C O S S Y R I T E R H O N I T E 0 9 O T H E R ( A D D I N B L O C K C) P Y R O X E N E S . P Y R O X C N O I O S . O L I V I N E S " NH A N T I F E R T H I T E R C RD NL P L A G I O C L A S E R E NM N A - P L A C 1 0 C L A S E NN I l .TCRMCD. P L A O . R F NO C A - P L A C I O C L A S E RC HP A L B I T E RH NO A I . B I T E - O L I C O C L A S E . R l NR O L I C O C L A S E R J NS OL I C O C L . - A N D E S N . RH N T A N D E S 1 N E R L NU ANDSN - L B R D R T . RM NV L A 3 R A D 0 M T E RN NM L ? R P R T . - D Y T W N T RO NX 8 Y T 0 V I N I T E RP N Y B Y T U N T . - A N O R T H I T E N Z A N O R T H I T E RO RR N 9 O T H E R (ADD IN B L O C K C l RS RT O A F E L D S P A T K O I D R U OB A N A L C I ME RV O C C A N C R I N I T E RW O D H A U Y N E RX O E K A L S I L I T E OF L E U C I T E RY OO N 2 P H E L I N E RZ O H N O S E A N R l 0 1 P S E U D 0 L E U C 1 T E O J S O D A L I T E R 9 0 9 O T H E R (ADD IN B L O C K 0 ) S A S B P H Y L L O S I L K A T E S . D O U B L E S C C H A I N S I L I C A T E S . AND S D P Y R O X E N E O R T H O P Y R O X E N E B R O N Z I T E E N S T A T 1 1 E H Y P E R S T H E N F C L I N O P Y R O x E N E A U G I T t D I 0 ° S 1 C E C : C P S I D E - A U C : T F C H R C M E - D I 0 P S 1 D E F E R R O A U C I T E ' H E D E N C E R C I T E H I C H - A L A U C I T E P 1 C E 0 N I T E S U P C A L C I C A U C I T E T I T A N A U C I T E A L K A L I P Y R O X E N E A C M I T E A C H I T E - D I O P S I D E A E G I R I N E A E C J R : N E - A U C ; - E A E C I R 1 N E — 0 1 D P S I D E O M P H A C I T E S O D I C P E C T O L I T E U 0 L L A S T 0 N 1 T E E P O D U M E N E  O T H E R ( A D D I N B L O C K C l O L I V I N E F A Y A L I T I C F O R S T E R I T IC MONT 1 C E L L I T E S 9 O T H E R ( A D D I N B L O C K C ) M T H F R S I L I C A T E S T B T C T D T E T F T C T H T I T J T K T L T H T N T O T P T O T R A L L A N I T E A L U M 1 N 0 - S 1 L I C A T E S A N D A L U S I T E K Y A N I T E S I L L I M A N 1 T E B E R Y L C L A Y M I N S R A L I S l C 0 R 0 1 E R I T E E P I D O T E O A R N E T A L M A N D I N E A N D R A D I T E C R O S S U L A R M E L A N I T C P Y R O P E S P E S S A R T I N E M E L I L I T E T 1 T A N 1 T E . S P H E N E T O P A Z T 9 T O U R M A L I N E T T V E S U V I A N I T E T U Z E O L I T E I S I T V C H A B A Z I T E T U H E U L A N 0 1 T E TX L A ' J M O N T I T E T Y N A T R O L I T E T Z P H I L L I P S I T E T I Z I R C O N T 2 Z 0 1 S I T E T 9 O T H E R ( A D D IN B L O C K C l UC UD U E U F UU UH U I U J U K U L UO UR U V uu ANATA5E B R O O K I T E C A C S I T E R 1 T E C O R U N D U M H E M A T I T E I L M E N I T E L I M O I I I T E P E R O V S K I T E P S E U D C 3 S 0 0 K I T E R U T I L E S I L I C A C P O U P C R I S T O B A L I T E C R v p T O C R Y S T . O U A R T Z T R 1 D Y M I T E S P I N E L C H R O M I T E H E R C Y M T E M A C H E M I T E M A G N E T I T E P L E O N A S T E T I T A N O M A G N E T I T E U L V O S F I N E L " x V" O P A O U E S . O R E S coV-A«. U 9 O T H E R ( A D D IN B L O C K C ) N O N - O X I D E S . N O N - S I L I C A T E S V A A P A T I T E VS C A R B O N A T E ( S ) VC C A L C I T E vo D O L O M I T E V E S I C E R I T E V F F L U O R I T E VO M O N A Z I T E uu O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S I V I S U L F A T E I S l V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E vn P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 0 1 H I N E R A L O I D S U A C H L O R O P H A E I T E UB C L A S S U C I D D I N 0 S 1 T E UD L E U C O X E N E WE P A L A C O N I T E U F S I D E R O M E L A N E W » O T H E R ( A D D I N B L O C K C l C. A D D I T I O N A L N O T E S Mi-s | / w j , r r | - 98 -C O N T R I B U T O R ' S NAME CONTRI BUT ION NO. A. HEAD1N0 INFORHAT1 ON ROCK NAME LATITUDE £ 1 . 4 ^ " ^ C E O L O S I C U N I REFERENCE NO 1 B ESSENTIAL OXIDES SIG2 TI02 1 AL203 FE203 1 FEO HMO MCO CAO NA20 K20 P203 C02 | H20* H2D- TOTAL 0.7H g©4 4.8<; I-10 0 l| 0,00 0 IC iOe>.<?| TR AC E ELEMENTS OR COMPONENTS N A M E Cr \>- Uk AMOUNT to 5" 7 8 / / f l 108 R F F E R E N C E | NAME | | AMOUNT REFERENCE NAME AMOUNT REFERENCE 3A 3B 3C 3D (d&> 3F •3G 3H 31 E. STRATICRAPHIC  ISOTOPIC OR PHY SICAL ' YEARS METHOD MATERIAL REF. NO. PETROCRAPHIC DESCRIPTORS ERUPTIVE TYPE. C3>'&> . 4B ^ . 4C . 4D . 4E . 4F . 4G . 4H . 41 MODE OF OCCURRENCE NO I N F O R M A T I O N A B A A A C A C C L O M E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A t B O S S A J B R E C C I A A K C O N E S H E E T A C D I A T R E M E AM D I K E ( D Y K E ) A N DOME AO E X T R U S I V E A P ' F L O W A O F L C W B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A AZ L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H 8C N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E B C P H A C O L I T H B H P I L L O U L A V A B I P I P E B J P L U O BK P L U T O N B L P L U T O N I C BM P W 1 I C E BN PYROCLASTIC E J CLOMEROPORPH. BO RINO DIKE EK CNEISSIC BP ROPY-LAVA EL CRANITIC BO SCORIA EM CRANOPHYRIC BR SECRECATI ON EN CRANULITIC BS S I L L EO CRAPHIC BT SPATTER EP HOLOCRYSTALLINE BU STOCK EO HOLOHYALINE BV SUBAERIAL ER HYALINE B U SUBAOUEOUS ES HYALOPILITIC BX SUBMARINE E T HYPOCRYSTALLINE BY TEPHRA EU INTERSERIAL BZ TUFF EV LAMPROPHYRIC CA TUFF BRECCIA E U LINEATED CB VEIN EX MASSIVE CC VOLCANIC E Y MEDIUM CD VOLCANICLASTIC EZ MICROCRYSTALLINE CE WELDED TUFF . FA MICROCRAPHIC CF XENOLITH FB MICROLITIC OTHER (ADD IN BLOCK C) FC MICROPECMATITIC DP FD FE MICROPOIKILITIC MICROPORPHYRITIC TEXTURE. STRUCTURE, F F M1CR0SPHERULITIC CRAIN SIZE FC MYRMEKITIC FH OPHITIC DO NO INFORMATION F I F J ORBICULAR PECMATITIC DR AMYCDULAR FK PERLITIC DS APHANIT1C FL PHANERITIC DT APHYRIC FM PILOTAXITIC DU A P L I T I C FN PLATY DV BANDED FO POIKILITIC D U COARSE FP PORPHYRITIC DX CRYPTOCRYSTLN. FO PUMICEOUS D Y CUMULATE /FJJJRECR YSTALL I ZED V s SCHISTOSE DZ DEV1TRIF I ED EA DI SCR YSTALL I NE FT SCORIACEOUS EB DOLERITIC FU SERIATE EC EUCRYSTALLINE FV SPHERULITIC ED EOUICRANULAR F U SPINIFEX F E L S I T I C FX SUBOPHITIC )FINE FY TRACHYT IC CLASSY FZ VARIOLITIC EI FOLIATED CA VESICULAR GE evAugt A i c &F V\w p\elAoY>\o»-toWvC &<; p 9 n ' » i . ' i o Y n i Y p r \ \ c CB VITREOUS CC VITROPHYRIC CD XENOCRYSTIC HY OTHER (ADD IN BLOCK C) STATE OF PRESERVATION IA NO INFORMATION IB FRESH IC ALTERED !£. SLICHTLY MODERATELY IF EXTENSIVELY I J O T H E R ( A D D I N B L O C K C) T Y P E O F A L T E R A T I O N I K NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T I C I N D E U T E R I C 10 F E N I T I C I P H Y D R A T E D 10 H Y D R O T H E R M A L IP. L E A C H E D rip M E T A M O R P H I C T T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX PYR1T1C I Y S A U S S U R I T I C 1Z SER1CITIC J A S E R P E N T J N1 Z E D J B S I L 1 C I F I C A T I 0 N J C S O L F A T A R I C J D U E A T H E R E D J J O T H E R ( A D D I N B L O C K C> JE C«r-\>o r\<vV\c_ I ( I - 99 -. F . M I N E R A L A S S E M B L A C E NO I N F O R M A T I O N F E L D S P A R S . F O I D S NB ND N E N F F E L D S P A R A L K A L I F E L D S P A R ANOR T H O C L A S E K - F E L D S P A R M I C R O C L I N E M I C R O P E R T H I T E O R T H O C L A S E P E R T H I T E 0 9 O T H E R ( A D D IN B L O C K Q> P H Y L L P S I L 1 C A T F S . D O U B L E C H A 1 N * S 1 L 1 C A T E S . AND  A M P H l 1 3 L 0 1 C S P A P B PC PD P E PF n. po PH M I C A B I O T I T E L E P I D O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E C H L O R I T E ' S E R P E N T I N E P 9 O T H E R ( A D D I N B L O C K 0 ) O C OD Qf O E O F 0 0 O H 0 1 A M P H I B O L E B A S A L T I C H N B L N O . C U M M I N O T O N I T E H O R N B L E N D E p «Y< j« j i + e A L K A L I A M P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E F 3 U T I T E O J K A T O P H O R I T E T S T O U R M A L I N E OK R I E B E C K I T E T T V E S U V I A N I T E O L S O D I C T U J E O L I T E ( S ) T V C H A B A Z I T E OM A E N I C M A T I T E T U H E U L A N D I T E O N C O S S Y f l I T E TX L A U M O N T I T E 0 0 R H O N I T E T V N A T R O L I T E T 2 P H I L L I P S I T E 0 9 O T H E R ( A D D I N B L O C K C ) T I I I R C O N T 2 I O I S I T E S A N I D I N E R B NA A N T I P E R T H I T E RC RD P L A C I 0 C L A 3 E R E N A - P L A C I O C L A S E NN I N T E R M E D . P L A O . R F NO C A - P L A C I O C L A S E RO NP A L B 1 T E R H NO A l . B I T E - O L I C O C L A S E R I NR O L I C O C L A S E S J NS O L I C O C L . - A N D E S N . RK NT • , A N D E S 1 N E R L NU A N D S N - L B R D R T . RM NV L A 3 R A D U R I T E RN NU L B R D R T . - B Y T U N T . RO NX B Y T C f N I T E RP NY B Y T U N T . - A N O R T M I T E « Z A N O R T H I T E RO RR N9 O T H E R ( A D D I N B L O C K C ) R S RT OA F E L D S P A T H O I D R U OB A N A L C 1 M E RV OC C A N C R I N I T E RU OD H A U Y N E NX O E K A L S I L I T E 0 = L E U C I T E RY O S N E P H E L I N E RZ O H N O S E A N R l 01 P S E U D O L E U C I T E O J S O D A L I T E R 9 P Y R O X E N E S . P Y R O X E N O I D S . O L I V I N E S P Y R O X E N E O R T H O P Y R O X E N E BRO.NZ I T E E N S T A T I T E H Y P E R S 7 H 2 N E C L I N O P Y R O X E N E A U C I T E D I O ° S I D E C I O P S I D E - A U C I T E C H R O M E - D I O P S I D E F E ^ R O A U C I T E H E P E N D E R C I T E M 1 C H — A L A U C I T E P W E O N I T E S U P C A L C I C A U C I T E T I T A N A U C I T E A L K A L I P Y R O X E N E A C M I T E A C M 1 T E - D I O P S I D E A E C 1 R I N E A E C I R I N E - A U C I T E A E C 1 R I N E - D I 0 P S I D E O M P H A C I T E S O D I C P E C T O L I T E U O L L A S T O N I T E S P O D U M E N E  O T H E R ( A D D IN B L O C K 01 S A SB S C SO O L I V I N E F A Y A L I T I C F O R S T E R I T I C M O N T I C E L L I T E S 9 O T H E R ( A D D I N B L O C K C ) M T H F R S I L I C A T E S T A T B T C T O T C T T T C T H T I T J TP T L T M T N T O T P T O TR A L L A N I T E A L U M I N O - S I L I C A T E S A N D A L U S I T E K Y A N I T E S I L L I MAN I T E B E R Y L C L A Y M I N Z R A L ( S I C O R D I E R I T E C P I D O T E O A R N E T A L M A N D I N E A N O R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L I L I T E T I T A N I T E . S P H E N E T O P A Z T 9 O T H E R ( A D D IN B L O C K C> US UC UD U E U F UU UH UI U J <35? U N U O U P UQ U R U S U T U U U V U U A N A T A S E B R O O K I T E C A S S I T E R 1 T E C O R U N D U M H E M A T I T E I L M E N I T E L I M O H I T E * E R O V S K I T E P S E U D C a S C O ^ I T E R U T I L E S I L I C A C P C U P C R I S T O D A L I T E C R Y P T O C R Y S T . Q U A R T Z T R I D Y M I T E S P I N E L C H R O H I T E H E R C Y M T E M A Y H E M I T E M A G N E T I T E P L E O N A S T E • T I T A N O M A C N E T I T E U L V f J S P I S E L p ' C o O P A O U E S . O R E S U 9 O T H E R ( A D D IN B L D C K C ) N O N - O X I D E S . WQN-S1LIC*TES V A A P A T I T E VB C A R B O N A T E ( S ) V C C A L C I T E VD D O L O M I T E V E S I D E R I T E V F F L U O R I T E V C M O N A Z I T E uu O P A Q U E S . O R E S V H N A T I V E E L E M E N T ( S ) V I S U L F p T E ( S ) V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E VM P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 0 ) M 1 N E R A L 0 I D S U A C H L O R O P H A E I T E US OL A S S U C I D D I N O S I T E UD L E U C O X E N E WE P A L A C O N I T E U F S I D E R O M E L A N E U 9 O T H E R ( A D D I N B L O C K 0 ) O. A D D I T I O N A L N O T E S 0|oTS o-f c c ^ M p ^ e - + - C f l ^ u ^ 5 Mu;c £3^* * or **** - 100 -C O N T R I B U T O R ' S N A M E C O N T R I B U T I O N NO. A. H g A D I N O I N F O R M A T I O N R O C K N A M E a AW. R E F E R E N C E NO , C U N I T J ^ L U Y ^ O U W T ^ < O S 1 B E S S E N T I A L O X I D E S SI02 TI02 AL203 FE203 F E O M N O nco j C A O NA20 K20 | P20S C02 H20» H20- TOTAL 0-S /3A -7-34- oof 044 mi C-oo 003 loo. 4 c C . T R A C E E L E M E N T S O R C O M P O N E N T S N A M E .Cr \J V Ait AMOUNT o ftf<r R E F E R E N C E NAME 1 1 1 AMOUNT 1 REFERENCE 1 1 1 N A M E | 1 J ! AMOUNT 1 R E F E R E N C E t 3A 3B 3C 3D D. A P E S T R A T 1 C R A P H I C  I S O T O P I C OR P H Y S I C A L R E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F . NO. 3F 3G 3H 31 E. P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E . MODE OF O C C U R R E N C E 4C 4D 4E 4F 4G 4H 41 AA NO INFORMATION AB AA AC ACCLOMERATE AD ASH AE ASH FLOW AF BATHOLITH AC BLOCK LAVA AH BOMB A l BOSS AJ BRECCIA AK CONE SHEET AL D1ATREME AMDIKE (DYKE) <AJ£>OME AO EXTRUSIVE AP FLOU AO FLOU BRECCIA AR HYALOCLASTITE AS HYPABYSSAL AT ICNIMBRITE AU INTRUSIVE AV INTRUSIVE (INTRUSION) BRECCIA AU LACCOLITH AX LAPILLI AY LAVA A2 LAVA LAKE BA LAYERED INTRUSION BB L O P O L 1 T H BC NECK BD NUEE ARDENTE BE NODULE BF PAHOEHOE BO PHACOLITH BH P 1 L L O U LAVA BI PIPE BJ PLUC BK PLUTDN BL PLUTONIC BM PUMICE B N P Y R O C L A S T I C B O R I N O D I K E B P R O P Y ' L A V A B O S C O R I A B R S E C R E C A T I O N B S S I L L B T S P A T T E R B U S T O C K B V S U B A E R I A L B U S U B A Q U E O U S . < * 5 ^ S U B M A R I N E B Y T E P H R A B Z T U F F C A T U F F B R E C C I A C B V E I N C C V O L C A N I C C D V O L C A N I C L A S T I C C E U E L D E D T U F F C F X E N O L I T H D P O T H E R ( A D D IN B L O C K 0) T E X T U R E . S T R U C T U R E .  C R A 1 N S I Z E D O N O I N F O R M A T I O N D R A M Y C D U L A R D S A P H A N I T 1 C D T A P H Y R I C D U A P L I T I C D V S A N D E D D U C O A R S E D X C R Y P T O C R Y S T L N . D Y C U M U L A T E D Z D E V I T R I F I E D E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D E O U I C R A N U L A R E F . F E L S I T I C / E C ^ F I N E I E H C L A S S Y E I F O L I A T E D GE e u A w v V . c t F V\MO\4\eY<\a)-i>K'tC &4 pOY>\i .VOYrvHrpV l\c. E J C L O M E R O P O R P H . E K C N E I S S 1 C E L C R A N I T I C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E Q K O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P I L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E R S E R T A L E V L A M P R C P H Y R I C E U L I H E A T E D E X M A S S I V E E Y M E D I U M E Z M I C R O C R Y S T A L L I N E F A M I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K I L I T I C F E M I C R O P O R P H Y R I T I C F F M 1 C R 0 S P H E R U L I T I C F C M Y R M E K I T I C F H O P H I T I C F I D R B I C U L A R F J P E C M A T I T 1 C F K P E R L I T I C F L P H A N E R I T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K I L I T I C F P P O R P H Y R I T I C F O P U M I C E O U S F R R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L 1 T I C F U S P I N I F E X F X S U B O P H I T I C ( ^ Y ^ T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R . C B V I T R E O U S C C V I T R D P H Y R I C C D X E N O C R Y S T I C HY O T H E R ( A D D IN B L O C K C) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N IB F R E S H l £ _ A L T E R E D C O - - ' S L I C H T L Y I E M O D E R A T E L Y I F E X T E N S I V E L Y I J O T H E R ( A D D IN B L O C K C) T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T 1 C I N D E U T E R I C 1 0 F E N I T I C I £ H Y D R A T E D 0 5 > H Y D R O T H E R M A L IR L E A C H E D GST M E T A M O R P H I C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R 1 T I C I Y S A U S S U R I T I C IZ S E R 1 C I T I C J A S E R P E N T I N I Z E D J B S I L 1 C I F I C A T I O N J C S O L F A T A R I C J D U E A T H E R E D J J O T H E R ( A D D I N B L O C K C ) ( 3 j p Car-oona-VvC if pY^.V\Yl\V">C za>\iV\t - 101 -F. M I N E R A L A S S E M B L A G E N A NO I N F O R M A T I O N F E L D S P A R S . F O I D S N E N F NC NM N l N J OVC NH F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R n I C R O C L I N E M I C R O P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I D I N E A N T 1 F E R T H I T E P L A G I O C L A S E N A - P L A G I O C L A S E P H Y L L O S I L K A T E S . DC IUPLE C HA I N S I L I C A T E S . AND A,1?H1G0-0IDS P A P B P C P F f l P C P H M I C A B I O T I T E L E P I D O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E p A T * ( X > c ' p ' r T « C H L O R I T E ' S E R P E N T I N E P 9 O T H E R ( A D D I N B L O C K 0 1 O A OB OC O D OT-O E O F oo OH 0 1 A H P H I B O L E B A S A L T I C H N B L N D . C U M M I N O T O N I T E H O R N B L E N D E A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N G S I T E K A E R 3 U T I T E O J K A T O P H O R I T E T S T O U R H A L I N E OK R I E B E C K I T E T T V E S U V I A N I T E O L S O D I C T U Z E 0 L I T E ( S 1 T V C H A B A Z I T E on A E N I C M A T I T E T U H E U L A N 0 1 T E O N C O S S Y R I T E TX L A U M O N T I T E on R H O N I T E T Y N A T R O L I T E T Z P H I L L I P S I T E 0 9 O T H E R ( A D D I N B L O C K 0 ) T I Z I R C O N T 2 Z O I S I T E PYROXENES. PYROXFNOIDS. OLIVINES ' NN I t . T E R M C D P L A C . R F NO C A - P L A C 1 0 C L A S E R C NP A L D I T E RH NO A I . B I T E - O L I C O C L A S E R l NR O L I G C C L A S E R J NS O L I C O C L . - A N D E S N . RK NT A N D E S 1 N E R L N U A N D 3 N - L B R D R T . RM N V L A 3 R A D 0 R I T E R N NU L D R P f l T . - B Y T U N T . RO NX B Y T C W N I T E RP N Y B Y T U N T . - A N O R T H I T E HZ A N O R T H I T E RO RR N 9 O T H E R ( A D D IN B L O C K C ) R S R T OA F E L D S P A T H D i O RU OB A N A L C 1 M E P V O C C A M C R I N I T E R U OD H A U Y N E RX O E K A L S I L I T E O F L E U C I T E R Y O C N E P H E L I N E RZ O H N O S E AN R I 01 f S E U D 0 L E U C 1 T E O J S O D A L I T E R 9 0 9 OTHER ( A D D IN B L O C K 0 ) S A R A P Y R O X E N E RB O R T H O P Y R O X E N E R C B R O N Z 1 T E RD E N S T A T I T E R E H V P E R S T H E N F . CL1NOPYROXENE AUCITE D10"SIDE DIOPSIOE-AUCITE CHROME-DIOPSIDE FE5R0AUCITE MEPENDERCITE H:;H-AL AUCITE PIGEONITE SL'." CALCIC AUCITE T1TANAUCITE ALKALI PYROXENE ACMITE ACMITE-DIOPSIDE A C C I R 1 N E AECIRINE—AUGITE A E C 1 R I N E - D 1 C P S I D E OMPHACITE SODIC PECTOLITE UOLLASTONITE SPODUMENE R 9 OTHER ( A D D I N BLOCK 01 SB SC SD O L I V I N E F A Y A L I T I C F U R S T E R I T I C M C N T 1 C E L L I T E 5 9 O T H E R ( A D D I N B L O C K 01 O T H E R S I L I C A T E S TA T B T C T D T E T F T C T H T I T J T K T L T H T N T O T P T O T R A L L A N I T E A L U M I N O - S I L I C A T E S A N D A L U S I T E R Y A N ! T E S I L L I M A N I T E . B E R Y L C L A Y M I N E R A L ( S ) C O R D 1 E R I T E E P I D O T E OAR N E T A L M A N D 1 N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O » E S P E S S A R T I N E H E L I L I T E T I T A N I T E . S P H E N E T O P A Z T 9 O T H E R ( A D D IN B L O C K C> U A U3 UC UD U E U F UO U H U I U J uo UP uo WR us 1/7 uu ANATASE BROOKITE CASS ITER1TE CORUNDUM HEMATITE ILMENITE LIMONITE PEROVSHITE PSEUDCOROOKITE RUTILE SILICA CROUP CRIST03ALITE CRVPTOCRYST OUARTZ TR1DYMITE SPINEL CHHOMITE HERCYNITE MACHEMITE MACNETITE PL EONASTE TITANOMAGNETITE ULVOSP1NEL OPAOUES. ORES UX p'lCoV'A* |/9 OTHER (ADD IN BLOCK C> MON-OIIDES. NON-SILICATSS U A A P A T I T E V8 C A R B O N A T E ( S ) CSC C A L C 1 T E v O D O L O M I T E V E S 1 D E R I T E VF . F L U O R I T E V G M O N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S ) V I S U L F A T E ( S ) V J S U L F ! D E ( S I V H C H A L C O P Y R I T E V L P Y R I T E vn P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 01 M l N E R A L O I D S U B U C U D WE C H L 0 R 0 P H A E 1 T E O L A S S I D D I N O S I T E L E U C O X E N E P A L A C O N I T E S 1 D E R 0 M E L A N E U 9 O T H E R ( A D D I N B L O C K C ) C. A D D I T I O N A L N O T E S NTS 1 [Ob / /- J- \ A. H E A D I N O I N F O R H A T 1 ON R O C K N A M E L A T I T U D E £ | AH*^ L O N C I T U D E ^ C O N T R I B U T O R ' S N A M E C O N T R I B U T I O N NO. C E O L O 0 1 C U N I R E F E R E N C E NO. * 1 B E S S E N T I A L OX I D E S SI02 TI02 AL203 FE203 FEO MNO MCO CAO NA2Q K2Q P203 C02 H20» H20- TOTAL 5^ 10 0£g \k lO 3 sn. 0. ig 3t& 0O4-T R A C E E L E M E N T S OR C O M P O N E N T S N A M E 5 V RU AMOUNT o / u p R F F E R E N C E . . IC . . ID . 2A <&> . 2D . . 2E . 2F . 2G . 2H . 21 N A M E AMOUNT R E F E R E N C E NAME I AMOUNT 1 R E F E R E N C E | . 3A . 3B . 3C . 3D . o > . 3F .30 . 3H . 311 . 4B . 4C .' 4D . 4E . 4F . 4G . 4H . 41 S T R A T I C R A P H I  I S O T O P 1 C OR P H Y S I C A L c E c v (ui Cot" t f^-rC E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F , NO. P E T R O O R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E . MODE OF OCCURRENCE B N P Y R O C L A S T I C BO R I N O D I K E B P R O P Y - L A V A A A N O I N F O R M A T I O N SO S C O R I A BR S E C R E C A T I O N A B A A B S S I L L A C A C C L O M E R A T E BT S P A T T E R A D A S H B U S T O C K A E A S H F L O U B V S U B A E R I A L A F B A T H O L I T H 3 U S U B A O U E O U S A O B L O C K L A V A BX S U B M A R I N E A H BOMB BY T E P H R A A l B O S S B Z T U F F A J B R E C C I A C A T U F F B R E C C I A A K C O N E S H E E T C B V E I N A L D I A T R E M E C C V O L C A N I C A M D I K E ( D Y K E ) C D V O L C A N I C L A S T I C A N DOME C E W E L D E D T U F F A O E X T R U S I V E C F X E N O L I T H F L O U F L O W B R E C C I A DP O T H E R ( A D D I N AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L T E X T U R E . S T R U C T U R E A T I C N I M B R I T E C R A I N S I Z E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) DO NO I N F O R M A T I O N B R E C C I A A U L A C C O L I T H DR A M Y C D U L A R A X L A P I L L I DS A P H A N I T I C A Y L A V A DT A P H Y R I C A Z L A V A L A K E DU A P L I T I C B A L A Y E R E D I N T R U S I O N DV B A N D E D BB L O P O L I T H DU C O A R S E B C N E C K DX C R Y P T O C R Y S T L N . B D N U E E A R D E N T E DY C U M U L A T E B E N O D U L E DZ D E V I T R I F I E D B F P A H O E H O E E A D I S C R Y S T A L L I N E B C P H A C O L I T H E B D O L E R I T I C B H P I L L O W L A V A E C E U C R Y S T A L L I N E B l P I P E E D E O U I C R A N U L A R B J P L U O %£ F E L S I T I C BK P L U T O N C3 > I N E B L P L U T O N I C C L A S S Y BM P U M I C E E I F O L I A T E D E J C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T I C E M C R A N O P H Y R r C E N C R A N U L I T 1 C E O C R A P H I C E P H D L O C R Y S T A L L I N E E Q H O L O M Y A L I N E ER H Y A L I N E E S H Y A L O P I L 1 T 1 C E T H Y P O C R Y S T A L L I N E E U I N T E R S E R T A L E V L A M P R O P H Y R I C EW L I N E A T E O EX M A S S I V E E Y M E D I U M E Z M I C R O C R Y S T A L L I N E F A M I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K I L I T I C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K 1 T I C F H O P H I T I C F l ORE I C U L A R F J P E C M A T I T I C F K P E R L 1 T 1 C F L P H A N = : R I T I C F M P I L O T A X I T 1 C F N P L A T Y F O P O I K I L I T 1 C F P P O R P H Y R I T I C F O P U M I C E O U S F R R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L 1 T 1 C F U S P I N I F E X F X S U B O P H I T I C (^Fj; T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R C B V I T R E O U S CC V I T R O P H Y R 1 C C D X E N O C R Y S T 1 C HY O T H E R ( A D D I N B L O C K C l S T A T E O F P R E S E R V A T I O N I A NO I N F O H H A T I O N IB F R E S H I C A L T E R E D I D S L I C H T L Y I E H O D E R A T E L Y CXEJ E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K C> T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C I H C H L 0 R I T 1 C I N D E U T E R I C 10 F E N I T I C IP H Y D R A T E D 10 H Y D R O T H E R M A L I R ^ L E A C H E D (J i>1ETAM0RPHIC I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C IX P Y R 1 T I C 1Y S A U S S U R I T K I Z S E R I C I T 1 C J A S E R P E N T IN I Z E D J S S I L I C I F I C A T I O N J C S O L F A T A R IC J D W E A T H E R E D J J O T H E R ( A D D IN B L O C K 0) GE evAwjivVic (JjD C a r b o n cvV\c JF fY>«,V\Yl\ViC zeo\<V\c - 103 -F. M I N E R A L A S S E H B L A C E NA NO I N F O R M A T I O N F E L D S P A R S . F O I D S NC NM NI N J OK N P NO F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E M I C R C P E R T N I T E O R T H O C L A S E P E R T H I T E S A N ! D I N E A N T I P E R T H I T E P L A C I 0 C L A 3 E N A - P L A C I O C L A S E I l . TC f lMED . P L A O . C A - P L A C I O C L A S E A L B I T E Al.S I T E — O L I C O C L A 5 E AMPHIOO-OICS P A PF f l M I C A B I O T I T E L E P 1 D 0 L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E . pATae^flnrV* C H L O R I T E S E R P E N T I N E P» OTHER (ADD IN BLOCK 0> OA AMPHIBOLE OB BASALTIC MNBLNO. OC CUMMINOTONITE OD HORNBLENDE Of P«T<)»fl+e OC ALKALI AMPHIBOLE OF ARFVEDSONITE 00 BARKEVIKITE OH HASTINCSITE 01 KAER3UTITE O J OK O L OM O H 0 0 K A T O P H O R I T E R I E B E C K I T E S O D I C A E N I C M A T I T E C L 5 3 Y R I T E R M I N I T E NR O L I C O C L A S E R J NS O L I C O C L . - A N D E S N . RK NT A N D E S I N E RL NU A N D S N - L B R D R T . RM NV L A B R A D O R I T E >?N NU L C R P R T . - O Y T W N T RO NX B Y T O V J N I T E « P NY BYTWNT. - A N O R T M I T E N I A N O R T H I T E RO RR N 9 O T H E R ( A D D IN B L O C K C ) RS R T O A F E L D S P A T H O I D RU OB A N A L C 1 M E RV O C C A N C R 1 N 1 T E RU OD H A U " N E RX O E K A L S 1 L I T E 0' L E U C I T E RY 0 0 N 2 P H E L I N E R I O H N O S E AN R l 01 P S E U D 0 L E U C 1 T E O J S O O A L I T E R 9 0 9 OTHE 'R ( A D D IN B L O C K C> S A S B P H Y L L O S I L l C A T f S . D O U P L E SC C H A I N S I L I C A T E S . AND SD 0 9 O T H E * ADD IN B L O C K C> P Y R O X E N E ' P Y R O X F N O I D S . R A P Y R O X E N E R B O R T H O P Y R O X E N E R C - R O N Z I T E R D £ '.STAT I T E R E H Y ^ E R S T H E N F . C L I M J P Y R O X E N E A ' J i 1 T E D 1 G ° S I D E 0 I O P S ICE-AUC.'TE CHHOME-DIOPSIDE F E 4 R 0 A U C 1 T E H E P E N O E R C I . T E H I C H - A L A U C I T E P t ^ E O N I T E S U K C A L C I C A U C I T E T I T A N A U C I T E A L K A L I P Y R O X E N E A C M I T E ACMITE-DIOPSIOE AECIRINE AEOIR:NE-AUC;-E AEC1RINS-D10PSIDE OMPHACITE S O D I C P E C T O L I T E U D L L A S T O N I T E E P O D U M E N E  O T H E R ( A D D IN B L O C K 01 O L I V I N E F A Y A L I T 1 C F 3 R S T E R I T I C MONT I C E L L I T E S 9 O T H E R ( A D D I N B L O C K 0 ) fTTHFR S I L I C A T E S T A T B T C T D T E T F T C T I T J T K T L ' TM T N T O T P T O TR A L L A N I T E A L U M I N O - 6 1 L 1 C A T E S A N D A L U S I T E K Y A N I T E S I L L I M A N I T E B E R Y L C L A Y M I N E R A L ( S ) C 0 R D 1 E R 1 T C E P I O O T E O A R N E T A L M A N D 1 N E A N D R A O I T E C R O S S U L A R M E L A N I T E P Y R O P E 6 P E S S A R T I N E M E L 1 L 1 T E T I T A N I T E . S P H E N E T O P A Z T S T T T U T V T U TX T Y 4> T O U R M A L I N E V E S U V I A N I T E Z E O L l T E ( S ) C H A B A Z I T E H E U L A N O I T E L A U M O N T I T E N A T R O L I T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D IN B L O C K C ) U A U 3 U C UD U E U F UO U H U I U J ur U N UO U P UO UR us ANATASE BROOK!TE CASSITERITE CORUNDUM HEMATITE ILMENITE LIMONITE PEROVSKITE PSEUOCOROOKITE RUTILE SILICA CPOUP CRISTODALITE CRYPTOCRYST. QUARTZ TRIDYMITE S P I N E L CHROMITE HERCYMTE MACHEMITE MACNETITE PLEONASTE TITAN0MA5NETITE ULVOSPINEL u x V* OPAOUES. ORES •.coVA< U 9 O T H E R ( A D D I N O L O C K C> N O N - O X I D E S . N O N - S T L I C A T E S V A A P A T I T E <2E5 C A R B O N A T E ( S 1 V C C A L C I T E V D D O L O M I T E V E S I D E R I T E V F F L U O R I T E VO M O N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S ) V I S U L F A T E ( S ) V J S U L F I D E ( S ) V K C H A L C O P Y R I T E V L P Y R I T E VM P Y R R H 0 T 1 T E V 9 O T H E R ( A D D IN B L O C K C ) M 1 N E R A L 0 I D S U A C H L O R O P H A E I T E U B C L A S S U C I D D I N O S I T E U D L E U C O X E N E U E P A L A C O N I T E U F B I D E R O M E L A N E U 9 O T H E R ( A D D I N B L O C K C> C. A D D I T I O N A L N O T E S C O N T R I B U T O R ' S N A M E C O N T R I B U T I O N NO. A. H E A D I N O I N F O R M A T I O N R O C K NAME /• i I «• L A T I T U D E / ( .4 4 CAJ L O C A T I O N 1 L O N C . T U O E ^ ^ C E O L O O I C U N I T R E F E R E N C E NO. I B E S S E N T I A L O X I D E S S I 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E D f lNO C A O N A 2 0 H 2 0 P 2 D 3 C 0 2 H 2 0 * H 2 0 - T O T A L OIL 0-G4 as* o IS |2.1c o.ei lOO^O T R A C E E L E M E N T S O R C O M P O N E N T S A jJ IC ID 2A 2D 2E 2F 2G 2H 21 NAME UL 1/ a - , Y1 AMOUI.'T 0 K R F F E R E N C E NAME 1 1 i AMOUNT 1 1 | REFERENCEJ 1 1 N A M E 1 I 1 A M O U N T R E F E R E N C E 1 Bi£HI£tA^fc| Gfrh'/\\-fesC:liS R E F E R E N C E N O . I S O T O P I C O R P H Y S I C A L Y E A R S M E T H O D M A T E R I A L R E F . N O . . 4B . 4G .' 4D . 4E . 4F . 4G . 4H . 41 P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E , M O D E O F O C C U R R E N C E < A A > IO I N F O R M A T I O N AB A A A C A C C L O M E R A T E A D A S H A E A S H F L O M A F B A T H O L 1 T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A H C O N E S H E E T A L D I A T R E M E AM D I K E ( D Y K E ) A N DOME AO E X T R U S I V E A P F L O U AO F L O U B R E C C I A A R . H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A Z L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H BC N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E BO P H A C O L I T H B H P I L L O U L A V A B l P I P E B J P L U C BK P L U T O N B L P L U T O N I C 8 M P U M I C E B N P Y R O C L A S T I C B O R I N C D I K E B P R O P Y ' L A V A B O S C O R I A B R S E C R E C A T I O N B S S I L L B T S P A T T E R B U S T O C K B V S U B A E R I A L B U S U B A Q U E O U S B X S U B M A R I N E B Y T E P H R A B Z T U F F C A T U F F B R E C C I A V E I N > V O L C A N I C C D V O L C A N I C L A S T I C C E W E L D E D T U F F C F X E N O L I T H dc i D P O T H E R ( A D D I N B L O C K C ) T E X T U R E , S T R U C T U R E ,  C R A 1 N S I Z E D O N O I N F O R M A T I O N D R A M Y C D U L A R D S A P H A N I T I C D T A P H Y R I C D U A P L I T I C D V B A N D E D D W C O A R S E D X C R Y P T O C R Y S T L N . D Y C U M U L A T E D Z D E V I T R I F I E D E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L 1 N E E D E G U I C R A N U L A R E F F E L S I T 1 C £ E £ ) F I N E E H C L A S S Y E l F O L I A T E D G£ evArAxAic & F Vn« 0 v4>OY>vOV-t>L,'( c &G ponn'v C V \O Y > M r >^h\c E J ' C L O M E R O P O R P H . E K C N E I S S I C E L C R A N I T I C E M C R A N O P H Y R P C E N C R A N U L 1 T I C E O C R A P H I C E P H D L O C R Y S T A L L I N E E O H O L O H Y A L I N E E R H Y A L I N E E S H Y A L O P I L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R 1 C E W L I N E A T E D E X M A S S I V E E Y M E D I U M E Z M I C R O C R Y S T A L L I N E F A M 1 C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K I L I T I C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E C M A T I T I C F K P E R L I T I C F L P H A N E R 1 T I C F M P I L O T A X I T I C F N P L A T Y F O P 0 1 K I L 1 T I C F P P O R P H Y R ' I T I C F O P U M I C E O U S F R R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T 1 C F W S P I N I F E X F X S U B D P H 1 T I C F Y T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C . H Y O T H E R ( A D D I N B L O C K C > S T A T E O F P R E S E R V A T I O N I A N O I N F O R M A T I O N I B F R E S H ' I C A L T E R E D S L I C H T L Y T T M O D E R A T E L Y I F E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K C > T Y P E O F A L T E R A T I O N I K N O I N F O R M A T I O N I L A R C I L L I T I C I H C H L O R I T 1 C I N D E U T E R I C 1 0 F E N 1 T I C tH Y D R A T E D H Y D R O T H E R M A L L E A C H E D M E T A M O R P H I C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C 0 N 1 T I C I U P R O P Y L I T I C I X P Y R I T I C I Y S A U S S U R I T I C I Z S E R I C I T I C J A S E R P E N T I N I Z E D J B S I L I C I F I C A T I O N J C S O L F A T A R I C J D - W E A T H E R E D J J O T H E R ( A D D I N B L O C K C > (5fJS Car'boncvVvC if pv«.V\n;V\c o& zeo\>'V\c - 105 -g M I N E R A L A S S E H P L A C E N A N O I N F O R N A T I O N F E L D S P A R S . F O I D S N B F E L D S P A R ( N ^ A L K A L I F E L D S P A R TiD A N O R T H O C L A S E N E K - F E L D S P A R N F H I C R O C L I N E N C H I C R O P E R T H I T E N H O R T H O C L A S E N l P E R T H I T E N J S A N I D I N E P H Y L L O S I L K A T E S . D G U P L E C H A I N S I L I C A T E S , A N D A r . P H i a o : o i c s PA P S # PF n i C A B I O T I T E L E P I D O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E pAx-AC t^fr»rV« C H L O R I T E S E R P E N T I N E P9 O T H E R (ADD I N B L O C K 0 ) SB O C OD •SY O E O F 0 0 O H 0 1 A H P H I B O L E B A S A L T I C H N B L N D . C U M M I N C T O N I T E H O R N B L E N D E A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 3 U T I T E O J OK O L OM ON on K A T O P H C R I T E R I E B E C K I T E S C D 1 C A E N I C M A T I T E C O S S V R I T E R H O N I T E 0 9 O T H E R ( A D D I N B L O C K C > P Y R O X E N E S . P Y R O X f N O I D S . O L I V I N E S ' O K RB N A A N T I f E R T H I T E RC • RD N L P L A C I 0 C L A 3 E R E NM N A - P L A C I 3 C L A S E N N I N T C R H C D . P L A C R F N O C A - P L A C I O C L A S E R C NP A L i I T E R H N O A L B I T E - O L I C O C L A S E R ! N R 0 L 1 C 0 C L A S E R J N S O L I C O C L - A N D E S N . R K N T A N D E S I N E R L N U A N D S N - L B R D R T . RM N V L A 3 P . A D 0 M T E R N NW L C R P R T . - O Y T U N T . R O W> B V T O V J N I T E R P «* B Y T U N T . - A N O R T H I T E nz. A N O R T H I T E RO R R N 9 O T H E R ( A D D I N B L O C K C ) R S R T O A F E L D E P A T H O I D R U OB A N A L C I ME R V O C C A N C R I N I T E R U OD H A U Y N E R X O E K A L S I L I T E O F L E U C 1 T E R Y O S N Z P H E L I N E R 2 O H N O S E A N R l 0 1 P S E U D O L E U C I T E O J S C D A L I T E R 9 0 9 O T H E R ( A D D IN B L O C K C> S A P Y R O X E N E O R T H O P Y R O X E N E B R O N I I T E E N S T A T I T E H Y P E R S T H 2 N F . C L I N O P Y R O X E N E A U C I T E L I 9 = S I D E C : C . ? S ; C E - A U S : T E C H R C M E - D I O I ' S S O E T E ^ R O A U S I T E H E D E N O E R C T T E H I C H - A L A U C I T E » 1 C E 0 N I T E S U P C A L C I C A U C I T E T 1 T A N A U C 1 T E A L K A L I P Y R O X E N E A C M I T E A C M I T E - O I O P S I D E A E C I R 1 N E A E C I R : N £ - A U C I - E A £ C l R I N E - D 1 0 r S I D E O M P H A C I T E S O D I C P E C T O L I T E W O L L . A S T ON I T E S P C D U M E N E O T H E R ( A D D I N B L O C K C l O L I V I N E • F A Y A L I T 1 C S C F O R S T E H I T I C S D M O N T I C E L L I T E S 9 O T H E R ( A D D I N B L O C K C l O T H E R S I L I C A T E S T A T B TC T D TE T F T C T H T I T J T K T L " T M T N T O T P T O TR A L L A N 1 T E A L L M I N O - S I L I C A T E S A N D A L U S I T E K V A N I T E S I L L I M A N I T E B E R Y L C L A Y M I N E R A L I S l C O R D I E R I T E E P I D O T E O A R N E T A L M A N D 1 N E A N O R A O I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E H E L 1 L I T E T I T A N I T E . 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H g A D I N O I N F O R M A T I O N R O C K NAME L A T I T U D E £ ( ,<f < C r J L O N G I T U D E C E O L O O I C U N I T REFERENCE NO. 1 B ESSENTIAL OXIDES S 1 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO MOO C A O N A 2 0 K 2 Q P 2 0 3 C 0 2 H 2 0 * H 2 0 - T O T A L 0.9f 0-zo i.if Z./o, o.cf\ 0-11 o.\o C. T R A C E E L E M E N T S OR C O M P O N E N T S NAME Ml AMOUNT 0 Sib RFFERENCE . 1A . ic . ID 2A "SB 2D . 2E 2F 2G 2H 21 N A M E 1 AMOUNT 1 R E F E R E N C E NAME AMOUNT R E F E R E N C E D. A P E 3A 3B 3C 3D B T F . A T I O R A P H I C foAl^ G V - L V A * E F E R E N C E I S O T O P I C OR P H Y S I C A L YEARS METHOD MATERIAL REF. NO. 3F 3G 3H 31 E . P E T R O C R A P H I C D E S C R I P T O R S . 4B . 4C . 4D . 4E . 4F . 4G . 4H . 41 E R U P T I V E T Y P E . 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BO RINO DIKE EK CNEISSIC BP ROPY-LAVA EL CRANITIC BO SCORIA EM CRANOPHYRIC BR SECRECATI ON EN CRANULITIC BS S I L L EO CRAPHIC BT SPATTER EP HOLOCRYSTALLINE BU STOCK EO HOLOHYALINE BV SUBAERIAL ER HYALINE BU SUBAQUEOUS ES HYALOPIL1TIC BX SUBMARINE ET HYPOCRYSTALLINE BY TEPHRA EU INTER3ERTAL B2 TUFF EV LAMPROPHYRIC CA TUFF BRECCIA EU LINEATED CB VEIN EX MASSIVE T5£>VOLCANIC EY MEDIUM CD VOLCANICLASTIC E2 H ICR OCR YSTALL I NE CE WELDED TUFF FA MICROCRAPHIC CF XENOLITH FB MICROLITIC FC MICROPECMATITIC DP OTHER (ADD I°N BLOCK 0) FD HICROPOIKILITIC FE MICROPORPHYRITIC TEXTURE. STRUCTURE. FF MICROSPHERULITIC CR A l N S H E FO MYRMEKIT1C FH OPHITIC DO NO INFORMATION F I ORBICULAR F J PECHAT1T1C DR AMYCDULAR FK PERL1TIC DS APHANIT1C FL PHAN^RITIC DT APHYRIC FM PILOTAXITIC DU APLITIC FN PLATY DV BANDED FO P O I K I L I T I C DU COARSE FP PORPHYRITIC DX CRYPTOCRYSTLN. 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JF OY>«.V\YI\V\C - 107 -F. MINERAL ASSEMBLAGE HA NO INFORMATION FELDSPARS. FOIDS a NE NF NC NH NI NJ OK NN NO N? NO NR NS NT NU FELDSPAR ALKALI FELDSPAR ANORTHOCLASE K-FELDSPAR HICROCLINE MICROPERTHITE ORTHOCLASE PERTHITE SANIDINE ANTIPERTHITE PLACIOCLA3E NA-PLACIOCLASE IhTERMCD. PLAO. CA-PLAC10CLASE ALDITE Al.B I TE-OLICOCLASE DL1C0CLA5E OLICOCL. -ANDESN. ANDESINE ANDSN -LBRDRT. P A PC PF PH ' MICA BIOTITE LEPIDOLITE MUSCOVITE PHLOCOPITE SERICITE P«TA<^0MrTe CHLORITE ' SERPENTINE PT OTHER ( A D D IN BLOCK 0) OA AMPHIBOLE as BASALTIC HNBLND. oc CUMMIN0T0N1TE OD HORNBLENDE Of OE ALKALI AMPHIBOLE OF ARFVEDSONITE 00 BARKEVIKITE OH HASTINCSITE 01 KAERSUTITE 0 J OK OL OM ON 00 KATOPHORITE R IEBECKITE SODIC AENICMATITE COSSVRITE RHONITE 09 OTHER CADD IN BLOCK C) PYROXENES. PYROXENOIOS. OLIVINES NV LABRADORITE RN NU LGRPflT. -BYTUNT RO NX BYTO-INITE RP NY BYTUNT. -ANORTMITE NZ AN0RTH1TE RO RR N9 OTHER (ADD IN BLOCK C> RS RT OA FELDSPATHOID RU OB ANALCI ME RV OC CANCRINITE . 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SPHENE TOPAZ TS TT TU TV TH TX TY TZ T l T2 TOURMALINE VESUVIAN1TE ZEOLITE(S) CHABAZITE HEULAND1TE LAUMONTITE NATROLITE PHILLIPSITE ZIRCON ZOISITE T9 OTHER (ADD IN BLOCK C> UA U3 UC UD UE UF UU UH UI UJ UN UO UP UO UR US UT UU uv <3S> ANATASE BROOKITE CASS ITER ITE CORUNDUM HEMATITE ILMENITE LIM0H1TE PEROVSKITE PSEUOC3R0O"ITE RUTILE SILICA CPOUP CRISTOBALITE CRYPTOCRYST. QUARTZ TRIDYM1TE SPINEL CHROMITE MERCYMTE MACHEM1TE MACNETITE PLEONASTE T1TANOMACNET1TE ULVGSPINEL OPAOUES. ORES <LoVA< U9 OTHER ( A D D IN BLOCK C> NON-OXIDES. NON-SILICATES C P VO VE VF VC uu VH VI V J VK VL VM APATITE CARBONATE(S) CALC1TC DOLOMITE SIDERITE FLUORITE MONAZITE OPAOUES. ORES NATIVE ELEMENT 1S) SULFATE(S) 3ULFIDEIS) CHALCOPYRITE PYRITE PYRRHOTITE V9 C" -.R (ADD IN BLOCK 0) U A U B U C U D WE -.IDS CHLOROPHAEITE CLASS IDDINOSITE LEUCOXENE PALACONITE SIDEROMELANE U9 OTHER ( A D D IN BLOCK 0) C. ADDITIONAL NOTES - 108 -N T S i / O b / V ^ I CONTRIBUTOR'S NAME C O N T R I B U T I O N NO. A^ K E A D I N Q I N F O R M A T I O N R O C K N A M E A T I T U D E (^'.44°^ ) C E O L O O I C U N I R E F E R E N C E NO. " 1 B E S S E N T I A L OK I P E S SI02 TI02 AL203 FE203 FEO MNO nco C A O NA20 K20 P203 COS | H 2 0 * M 2 0 - TOTAL £0.7. 1 o.ti 04? 2-W o.|4- 0/4 2 ^ OCR \0bAo T R A C E E L E M E N T S OR C O M P O N E N T S 2A N A M E O Ho, AMOUNT 7- / o IU S3 P F F E R E N C E N A M E | AMOUNT R E F E R E N C E 1 NAME i i A M O U N T i R E F E R E N C E 1 ! . 3A . 3B . 3C . 3D <^ . 3F . 3G . 3H . 31 E. S T F . A T I O R A P H I C t j ^ - T » V j I S O T O P I C OR P H Y S I C A L E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F . NO. P E T R 0 C H A P H 1 C D E S C R I P T O R S 4B 4C 4D 4E 4F 4G 4H 41 E R U P T I V E T Y P E . 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B E S S E N T I A L O X I D E S S I 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO r.co C A O N A 2 0 K 2 0 P 2 0 5 C 0 2 H 2 0 - H 2 0 - T O T A L 0-l\ 3 8 S - £ . 2 1 0 .14 - 3-01 0. IJL C . T R A C E E L E M E N T S OR C O M P O N E N T S NAME || Cr 1/ i'r 6«, 2^- V /ut AMOUt.-T It, a 0 m m R E F E R E N C E . IC . ID . 2A <g 2E 2F 2G 2H 21 NAME | AMOUNT R E F E R E N C E ! 1 | NAME 1 I AMOUNT 1 R E F E R E N C E . 3A . 3D . 3C . 3D C5S . 3F .•3G . 3H . 31 E^ G$ . 4B . 4C . 4D . 4E . 4F . 4G . 4H . 41 ICRAPHIC fccvivj Cv- ben I -f^rO PREFERENCE P. ACE 6 T F . A T I S O T O P I C OR P H Y S I C A L Y E A R S M E T H O D I M A T E R I A L R E F . NO. I 1 P E T R O C R A P H I C D E S C R I P T O R S E R U P T I V E T Y P E . MODE OF O C C U R R E N C E A A NO I N F O R M A T I O N AB A A A C A C C L O M E R A T E AD A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A I B O S S A J B R E C C I A A K C O N E S H E E T A L D I A T R E M E AM D I K E ( D Y K E ) A N DOME AO E X T R U S I V E f S ^ L O U A O F L O U B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P 1 L L 1 A Y L A V A A2 L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L 1 T H B C N E C K B D N U E E A R D E N T E B E N O D U L E B F P A H O E H O E BO P H A C O L I T H B H P I L L O U L A V A B I P I P E B J P L U O BK P L U T O N B L P L U T O N I C BM P U M I C E B N P Y R O C L A S T I C BO R I N G D I K E B P R O P Y - L A V A 8 0 S C O R I A BR S E G R E G A T I O N B S S I L L BT S P A T T E R B U S T O C K B V S U 8 A E R 1 A L B U S U B A Q U E O U S BX S U B M A R I N E B Y T E P H R A B 2 T U F F C A T U F F - B R E C C I A C B V E I N C C V O L C A N I C C D V O L C A N I C L A S T I C C E U E L D E D T U F F C F X E N O L I T H OP O T H E R ( A D D I*N B L O C K C ) T E X T U R E . 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E K C N E I S S I C E L C R A N I T I C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P 1 L 1 T I C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R 1 C E U L I N E A T E D EX M A S S I V E EY MEOIUM E I MI C R O C R Y S T A L L I N E F A H I C R O C R A P H I C F B M 1 C R O L I T I C F C M I C R O P E C M A T I T I C F D M I C R O P O I K 1 L I T 1 C F E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E C M A T I T I C F K P E R L I T I C F L P H A N E R 1 T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K I L I T I C F P P O R P H Y R I T I C F O P U M I C E O U S F R R E C R Y S T A L L I Z E D F S S C H I S T O S E F T S C D R I A C E O U S F U S E R I A T E F V S P H E R U L I T I C F U S P I N I F E X F X S U B O P H I T I C F Y T R A C H Y T I C F Z V A R I O L I T I C CA V E S I C U L A R C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C H Y O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A N O I N F O R M A T I O N IB F R E S H I C A L T E R E D I D S L I G H T L Y (Tt^> M O D E R A T E L Y I F . E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K S) T Y P E O F A L T E R A T I O N I K NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T I C I N D E U T E R I C I O F E N I T I C IP H Y D R A T E D IO H Y D R O T H E R M A L i f i ^ L E A C H E D C i S _ > £ T A M O R P H I C I T M E T A S O M A T I C tU O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L 1 T I C IX P Y R I T I C I Y S A U S S U R I T I C I Z S E R I C I T 1 C J A S E P P E N T . I N I Z E D J B S I L 1 C I F I C A T I O N J C S O L F A T A R 1 C J D . U E A T H E R E D J J O T H E R ( A D D I N B L O C K C ) G£ eiA-WAic (>F Vtw p \ <^ \o*Y\Ot-to Pi»-V\\A'lO»""l-Y^ JE C a r oo r-iw-VvC JF pYxtUi-iVVic. o& -z.eo\;-V\c - 113 -F M I N E R A L A S S E H B L A C E NA NO I N F O R M A T I O N F E L D S P A R S . F O I D S F E L D S P A R A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E M I C R O P E R T H I T E O R T H O C L A S E P E R T H I T E S A N I D I N E A N T I f E R T H I T E P L A C I S C . A S E N A - P L A C I O C L A S E I l . TCRMCO. P L A O . C A - P L A C I O C L A S E AL D 11 E A I . B I T E - O L I C O C L A S E O L I C O C L A S E O L I C O C L — A N D E S N . A N D E S I N E RNDS ' I - L B R D R T . L A 3 R A D O R 1 T E L 2 R P 3 T . - B V T U N T . B V T O V I N I T E B Y T U N T . - A N O R T H I T E A N O R T H I T E N E N F NC NH N l N J O K NH NN NO NP NO UR sru I\)V I V V J t * MV N Z P D : e < i PO PH M I C A B I O T I T E L E P I D O L I T E M U S C O V I T E P H L O C O P I T E S E R I C I T E p « T a ^ f f M T « C H L O R I T E ' S E R P E N T I N E P9 O T H E R ( A D D I N B L O C K O ) O A O B O C O D <a? O E O F O O O H O X A H P H I B O L E B A S A L T I C H N B L N D . C U M M I N O T O N 1 T E H O R N B L E N D E p « r e j « f i+e A L K A L I A H P H I B O L E A R F V E D S O N I T E B A P K E V I K 1 T E H A S T I N C S I T E K A E R 3 U T I T E O J O K O L O M O N O O K A T O P H O R I T E R I E B E C K I T E S O D I C A E N 1 C M A T I T E C O S S V R I T E R H O N I T E 0 9 O T H E R ( A D D I N B L O C K 0 ) P Y R O X E N E S . P Y R 3 X E N 0 I D S . O L I V I N E S " N 9 O T H E R ( A D D IN B L O C K C ) R S R T O A F E L D S P A T H O I D R U OB A N A L C 1 M E RV O C C A N C R I N I T E R U 0 0 H A U Y N E RX O E HAL S I L I T E O c L E U C I T E RY O C N 2 P H E L I N E RZ O H N O S E A N R l 0 1 P S E U D O L E U C I T E O J S O D A L l T E R 9 0 9 O T H E R ( A D D t N B L O C K 0 ) S A SB P H Y L L 0 S I L 1 C A T E S . D O U B L E S C C H A I N SILICATES, AND so A M P H 1 Q C L 0 I C S R A P Y R O X E N E R B O R T H O P Y R O X E N E RC B R O N Z I T E RD E N S T A T 1 T E R E H Y P E R S T H E N E R F C L I N O P Y f l O X F . N E R C A U C I T E RH D I O P S I D E R I P I O P S I C E - A U C ' T E R J C M R 0 M E - D T 0 P S 1 D E RH F E 4 R 0 A U C I T E R L H E D E N O E R C T T E RM H I C H - A L A U C I T E RN PICEONITE R O S U P C A L C I C A U C I T E RP T I T A N A U C I T E RO A L K A L I P Y R O X E N E RR A C M I T E A C M 1 T E - D I O P S 1 0 E A E C I R I N E A E C I R I N E - A U C I T E A E C I R 1 N E - D 1 0 P S I D E O M P H A C I T E S O D I C P E C T O L I T E U O L L A S T O N I T E S P O D U H E N E  O T H E R ( A D D I N B L O C K 0 ) O L I V I N E F A Y A L I T I C F L ' R S T E R I T I C MONT I C E L L I T E S 9 O T H E R ( A D D I N B L O C K 0 ) O T H E R S I L I C A T E S T B T C T D T E T F T C T H T I T J T K T L T M T N T O T P T O T R A L L A N I T E A L U M 1 N 0 - S 1 L 1 C A T E S A N D A L U S I T E K Y A N I T E S I L L I H A N I T E B E R Y L C L A Y M I N E R A L I S ) C O R D I E R I T E E P I D O T E O A R N E T A L M A N D 1 N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L 1 L I T E T I T A N I T E . S P H E N 6 T O P A Z T S T T T U T V T H T X T Y 4> T O U R M A L I N E V E S U V 1 A N 1 T E Z E 0 L I T E 1 S ) C H A D A l I T E H E U L A N O I T E L A U M O N T I T E N A T R O L I T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D I N B L O C K C l UB UC JD U E U F UU UH U I U J uo UP uo UR U S UT uu UV uu ANATASE BROOKITE CASS1TER1TE CORUNDUM HEMATITE ILMENITE LIHONITE PEROVEHIT£ PSEUDCOROOKITE RUTILE SILICA CPDUP CRISTOBALITE CRVPTOCRYST. GUAR TZ TRIDYHITE SPINEL CHROMITE HER C Yf*. ITE M A C H E M 1 T E MACNETITE PLEONASTE • TITANOMAGNETITE ULVCSPINEL u * P OPAOUES. ORES •,coVA< U 9 O T H E R ( A D D IN BLOCK G) NON-OXIDES. NON-SILICATES VD V E V F VO UU V H V I V J VH V L A P A T I T E C A R B O N A T E ( S I C A L C I T E 0 0 L O M 1 T E S I D E R I T E F L U O R I T E M O N A Z I T E O P A O U E S . O R E S N A T I V E E L E M E N T ( S ) S U L F A T E ( S I S U L F I D E I S I C H A L C O P Y R I T E P Y R I T E P Y R R H O T I T E V 9 O T H E R ( A D D I N B L O C K 0 ) M I N E R A L 0 1 D S U B U C UD U E C H L O R O P H A E I T E OL A S S I D O I N O S I T E L E U C O X E N E P A L A G O N I T E E I D E R O M E L A N E U9 O T H E R ( A D D I N B L O C K 0 ) C. A D D I T I O N A L N O T E S X- zz5^ 114 -C O N T R I B U T O R ' S N A n E C O N T R I B U T I O N NO. A. HEAD1 NO INFORHAT ROCK NAME •ORHATION . j LATITUDE CEOLOCIC UNIT^ pQ_j__0 ft ' |U REFERENCE NO. B ESSENTIAL OXIDES 1 SI02 TI02 AL203 j FE203 FEO r e o CAO NA20 K20 P203 C02 M20* M20- TOTAL 6.42 <7.94 a 38 /.t-S" CtOf TRACE ELEMENTS OR COMPONENTS NAME Ni (r 1/ t i c AMOUNT 11- o •z44 RFFERENCE . IC . ID 2A G c 2D 2 E 2 F 2G 2H 21 NAME | AMOUNT REFERENCE | 1 NAME 1 AMOUNT I REFERENCE 1 . 3 A . 3 B . 3C . 3D d£ . 3 F . 3G . 3H . 31 E. D. ACE STRATICRAPHIC  ISOTOPIC OR PHYSICAL EFERENCE NO. Y E A R S 1 ' M E T H O D M A T E R I A L R E F . NO. PETROCRAPHIC DESCRIPTORS . 4B . 4C .'4D . 4E . 4F . 4G . 4H . 41 E R U P T I V E T Y P E . B N P Y R O C L A S T I C MODE OF O C C U R R E N C E BO R I N O D I K E BP R O P Y - L A V A A A N O I N F O R M A T I O N BQ S C O R I A BR SECRECAT1ON AB A A B S S I L L A C A C C L O M E R A T E BT S P A T T E R A D A S H B U S T O C K A E A S H F L O U B V S U B A E R I A L A F B A T H O L I T H B U S U B A O U E O U S A C B L O C K L A V A BX S U B M A R I N E A H BOMB BY T E P H R A A l B O S S B Z T U F F A J B R E C C I A C A T U F F B R E C C I A A K C O N E S H E E T CB V E I N A L D I A T R E M E C C V O L C A N I C AM D I K E ( D Y K E ) C D V O L C A N I C L A S T I C A N DOME C E U E L D E D T U F F A D . E X T R U S I V E £ > P * > ' F L O U C F X E N O L I T H AO F L O U B R E C C I A DP O T H E R ( A D D f N B L O C K C ) AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I AY AZ 8A BB B C BD B E B F B C B H B I B J BK B L BM L A V A L A V A L A K E L A Y E R E D I N T R U S I O N L O P O L I T H H E C K N V E E A R D E N T E N O D U L E P A H O E H O E P H A C C L I T H P I L L O U L A V A PIPE PLUO P L U T O N P L U T O N I C P U M I C E T E X T U R E . S T R U C T U R E .  CRA1N S I Z E DO NO I N F O R M A T I O N DR A M Y C D U L A R DS A P H A N I T I C D T A P H Y R I C DU A P L I T I C DV B A N D E D D U C O A R S E DX C R Y P T O C R Y S T L N . D Y C U M U L A T E DZ D E V I T R I F I E D E A DI S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D E O U I C R A N U L A R E F FELS1TIC fF I N E C L A S S Y F O L I A T E D ( i F V\«A p\e^ \oYT\dv-toK\C &G PoV iA'lOYYUY^nvc EJ CLOMEROPORPH. EK CNEISSIC EL CRANITIC EM CRANOPHYRrC EN CRANULITIC EO CRAPHIC EP HOLOCRYSTALLINE EQ HOLOHYALINE ER HYALINE ES HYALOPILITIC ET HYPOCRYSTALLINE EU INTERSERTAL EV LAMPROPHYRIC EU LI HEATED EX MASSIVE EY MEDIUM EZ MICROCRYSTALLINE FA MICROCRAPHIC FB MICROLITIC FC MICROPECMATITIC FD MICR0POIKILIT1C FE MICROPORPHYRITIC FF MICROSPHERULITIC FO MYRMEKI TIC FH OPHITIC FI ORBICULAR FJ PECMATITIC FK PERLITIC FL PHANERITIC FM PILOTAXITIC FN PLATY FO POIKILITIC FP PORPHYRITIC FO PUHICEOUS FR RECRYSTALLIZED FS SCHISTOSE FT SCORIACEOUS FU SERIATE FV SPHERULITIC FU SPINIFEX EX. -SUBOPHITIC CEYVVRACHYTIC FZ VARIOLITIC CA VESICULAR C B V I T R E O U S C C V I T R C P H Y R I C C D XENOCRYST1C H Y O T H E R ( A D D IN B L O C K C ) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N I B F R E S H I C A L T E R E D LD, S L I C H T L Y U V M O D E R A T E L Y H £ j E X T E N S I V E L Y I J O T H E R ( A D D I N B L O C K C ) T Y P E O F A L T E R A T I O N IK NO I N F O R M A T I O N I L A R C I L L I T I C IM C H L O R I T I C IN DEUTER1C I O F E N I T I C IP H Y D R A T E D IO H Y D R O T H E R M A L L E A C H E D IS>METAM0RPH1C I T M E T A S O M A T I C I U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C I X PYR1TIC I Y S A U S S U R I T I C I Z S E R I C I T I C J A S E R P E N T I N I Z E D J B S I L I C I F I C A T I O N J C S O L F A T A R I C J D W E A T H E R E D J J O T H E R ( A D D I N B L O C K 0) OE JF 0& C a r - t o na-Vv c pY-«.V\n',V"\c. Z £ o \ ; - V \ c - 115 -F M I N E R A L A S S E H P L A C E MA NO I N F O R H A T I O N F E L D S P A R S . F O I D S NB - F E L D S P A R N E N F NC N H N l N J O K N A NN N O NP NC N U N V N2 A L K A L I F E L D S P A R A N O R T H O C L A S E K - F E L D S P A R M I C R O C L I N E M I C R O P E R T H I T E O R T H O C L A S E P E R T H 1 T E S A N I D I N E ^ A N T I P E R T H I T E P L A C I O C L A S E N A - P L A C I O C L A S E I l . T C R H C D P L A C , C A - P L A C I O C L A S E A L B I T E A I . B 1 T E - O L I C O C L A S E O L I C O C L A S E O L I C O C L . - A N O E S N . A N D E S I N E A N D S H - L B R D R T . L A B R A D O R I T E L 2 R T R T . - B V T U N T BYTCf . JN ITE BVTWNT. - A N O R T H I T E A N O R T H I T E f » O T H E R ( A D D IN B L O C K 0 ) OB O C OD O E O F 0 0 O H O I O J F E L D S P A T H 0 1 D A N A L C I HE C A N C R 1 N I T E H A U Y N E K A L S I L I T E L E U C I T E N E P H E L I N E N O S E A N P S E U D O L E U C I T E S O D A L 1 T E 0 9 O T H E R ( A D D t N B L O C K 0 ) PHVLLOSILICATES. DOUCLE CHAIN SILICATES. AND  AMP.HIQOLOICS P F P I P C P H nICA B I O T I T E L E P 1 D 0 L I T E nuscoviTE P H L O C O P I T E S E R I C I T E p A T A C t ^ 0 n t T * S C H L O R I T E S E R P E N T I N E PT O T H E R ( A D D I N B L O C K 0) O A OB O C O D «f O E O F 0 0 O H 0 1 A H P H I B O L E B A S A L T I C H N B L N O . C U M H I N O T O N I T E H O R N B L E N D E P « v ^ « $ i + - e A L K A L I A H P H I B O L E A R F V E D S O N I T E B A R K E V 1 K 1 T E H A S T I N C S I T E K A E R S U T I T E O J OK O L on O N on X A T O P H O R I T E R I E B E C K I T E S O D I C A E N I C M A T I T E C O S S Y R I T E R H O N I T E 0 9 O T H E R ( A D D IN B L O C K C> P Y R O X E N E S . P V R O X F N O I D S .  O L I V I N E S " R A P Y R O X E N E R B O R T H O P Y R O X E N E RC B R O N Z I T E RD E N S T A T I T E R E H Y P E R S T H E N E R F C L I N O P Y R O l E N E RC A U C I T E R H D I O P S I D E R l D I O P S I C E - A U C I T F . R J C M R C n E - D I O P S I D E RK F E w R O A U C I T E R L H E D E N D E R C I T E RM H I C H - A L A U C I T E RN P I C E 0 N 1 T E RO S U B C A L C I C A U C I T E R P T I T A N A U C I T E RO A L K A L I P Y R O X E N E RR A C H I T E R S A C H I T E - D I O P S I D E R T A E C I R I N E RU A E 0 I R I N E - A U C I 7 E R V A E C 1 R I N E - D I 0 P S I D E R U O H P H A C I T E RX S O D I C RV P E C T O L I T E RZ U O L L A S T 0 N 1 T E R l S P O D U H C N E R 9 OTHER ( A D D I N BLOCK 01 S A SB S C S D O L I V I N E FAYALITIC FC-RSTERITIC H C N T I C E L L I T E S 9 O T H E R ( A D D I N B L O C K C l O T H E R S I L I C A T E S T A A L L A N I T E A L U H I N 0 - S I L 1 C A T E S T B A N D A L U S I T E T C K Y A N I T E T D S I L L M A N I T E T E N B E R Y L T F C L A Y H I N E R A L ( S I T C C O R D I E R I T E ( * T H j E P I D O T E T I O A R N E T T J A L H A N D 1 N E T K A N D R A D I T E T L " C R O S S U L A R T n ' H E L A N I T E T N P Y R O P E T O S P E S S A R T I N E T P H E L X L I T E T O T I T A N I T E . S P H E N E TR T O P A Z TV TV TU TX TY 4t> T O U R M A L I N E V E S U V I A N 1 T E Z E O L I T E I S ) C H A B A Z I T E H E U L A N D 1 T E L A U M O N T I T E N A T R O L I T E P H I L L I P S I T E Z I R C O N Z O I S I T E T 9 O T H E R ( A D D I N B L O C K C l U A UD UC UD U E U F U U U I U J U K U L uo UP uo UR U S U T U U ANATASE BROOK ITE CASSITER1TE CORUNDUM HEMATITE ILMENITE LIMONITE PEROVSKITE PSEUDC3R0OKITE RUTILE S I L I C A CROUP CRISTOBALITE CRVPTOCRYST. OUARTZ TRIDYHITE SPINEL CHRCMITE MEPCVMTE M A C H E M 1 T E MACNETITE PLEONASTE TITANOMAGNETITE U L V G S P 1 N E L W X OPAOUES. ORES U 9 OTHER (AOO IN DLOCK G) NQN-OIIDES. NON-SILICATES V A A P A T I T E V S C A R B O N A T E ( S I V C C A L C I T E V D D O L O M I T E V E S I D E R I T E V F F L U O R I T E VO M C N A Z I T E U U O P A O U E S . O R E S V H N A T I V E E L E M E N T ( S I V I S U L F A T E ( S I V J S U L F I D E I S I V K C H A L C O P Y R I T E V L P Y R I T E V H P Y R R H O T I T E V 9 O T H E R ( A D D IN B L O C K 0 ) M I N E R A L O I D S U A C H L O R O P H A E I T E U B O L A S S U C I D D I N O S I T E U D L E U C O X E N E WE P A L A C 0 N 1 T E U F S I D E R O M E L A N E W9 O T H E R ( A D O I N B L O C K C ) 0. A D D I T I O N A L N O T E S - 116 -A, H E A D ROCK B ESSENTIAL OXIDES C O N T R I B U T O R ' S N A n E C O N T R I B U T I O N NO. INO INFORMATION , I i L A T I T U D E (^{.lofW L O N O I T U D E C E O L O O t C U N I T Hod^T Al R E F E R E N C E NO. 1 SI02 TI02 1 AL203 FE203 FED MNO | MCO CAO NA20 K20 P203 C02 H20- | H20- TOTAL 5*?y 0.5-414.xo 10 2-^  OXL IM 3.08 4.46 o.(4 0. C. TRACE ELEMENTS OR COMPONENTS NAME £<\ AMOUNT If / 1 il. 48<7 RFFERENCE N A M E 1 AMOUNT I R E F E R E N C E 1 1 NAME ! ! AMOUNT R E F E R E N C E 1 . 3A . 3B . 3C . 3D . 3F . 3G . 3H . 31 E. j±Lc E.o~/^\ COT^VA C / C^CMS STF.ATI CRAP I S O T O P 1 C OR P H Y S I C A L R E F E R E N C E NO. Y E A R S M E T H O D M A T E R I A L R E F , NO. P E T R O C R A P H 1 C D E S C R I P T O R S C5J> . 4B . 4C .'4D . 4E . 4F . 4G . 4H . 41 E R U P T I V E T Y P E , MODE OF OCCURRENCE A A NO I N F O R M A T I O N AB A A A C A C C L O M E R A T E A D A S H A E A S H F L O U A F B A T H O L I T H A C B L O C K L A V A A H BOMB A l B O S S A J B R E C C I A A X C O N E S H E E T A L D I A T R E M E A M D I K E ( D Y K E ) A N DOME A O E X T R U S I V E A P F L O U A O F L O U B R E C C I A AR H Y A L O C L A S T I T E A S H Y P A B Y S S A L A T I C N I M B R I T E A U I N T R U S I V E A V I N T R U S I V E ( I N T R U S I O N ) B R E C C I A A U L A C C O L I T H AX L A P I L L I A Y L A V A A Z L A V A L A K E B A L A Y E R E D I N T R U S I O N BB L O P O L I T H B C N E C K BD N U E E A R D E N T E B E N O D U L E B F P A H O E H O E BO P H A C O L I T H B H P I L L O U L A V A B l P I P E B J P L U C BK P L U T O N B L P L U T O N I C BM P U M I C E BN P Y R O C L A S T I C BO R I N O D I K E BP R O P Y - L A V A BO S C O R I A BR S E C R E C A T I O N B S S I L L BT S P A T T E R B U S T O C K B V S U B A E R I A L B U S U B A Q U E O U S BX S U B M A R I N E B Y T E P H R A BZ T U F F C A T U F F B R E C C I A C B V E I N C C V O L C A N I C r j l^ V O L C A N I C L A S T I C ^ C E W E L D E D T U F F C F X E N O L I T H DP O T H E R ( A D D f N B L O C K 0) T E X T U R E . S T R U C T U R E .  C R A I N S I Z E DO NO I N F O R M A T I O N DR A M Y C D U L A R DS A P H A N I T I C DT A P H Y R I C DU A P L I T I C DV B A N D E D D U C O A R S E DX C R Y P T O C R Y S T L N . DY C U M U L A T E OZ D E V 1 T R I F I E D E A D I S C R Y S T A L L I N E E B D O L E R I T I C E C E U C R Y S T A L L I N E E D E O U I C R A N U L A R E F F E L S I T I C E O F I N E E H C L A S S Y E I F O L I A T E D E J C L O M E R O P O R P H . 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' N E - A U C I T E A E C 1 R 1 N E - D 1 0 P S 1 D E O M P H A C I T E S O D I C P E C T O L I T E W O L L A S T O N I T E S P O D U M E N E  O T H E R ( A D D I N B L O C K C ) S A SB SC SD O L I V I N E F A Y A L 1 T I C F O R S T E R I T I C MONT I C E L L I T E S 9 OTHER ( A D D IN BLOCK 0) MTHFR SILICATES T A T B T C T D T E T F TC TH TI TJ TK TL " T H T N TO TP TO TR A L L A N I T E ALUM1N0-SIL1CATES A N D A L U S I T E K Y A N I T E S I L L IMANI T E D E R Y L C L A Y M I N E R A L ( S I C O R D I E R I T E E P I D O T E O A R N E T A L M A N D I N E A N D R A D I T E C R O S S U L A R M E L A N I T E P Y R O P E S P E S S A R T I N E M E L 1 L 1 T E T I T A N I T E . S P H E N E T O P A Z TS T O U R M A L I N E TT V E S U V I A N I I E TU Z E O L U E ( S ) TV C H A B A Z I T E TU H E U L A N D I T E TX L A U M O N T I T E TY N A T R O L I T E i i P H I L L I P S I T E T J > Z I R C O N - T 2 Z O I S I T E T 9 O T H E R ( A D D IN B L O C K C l U A A N A T A S E U3 BROOKITE UC CASS1TER1TE UD CORUNDUM UE HEMATITE UF ILMENITE UU Llr.ONITE UH PEROVSKITE U l PSEU0C3R00XITE UJ RUTILE SILICA CPCUP UK CRISTOBALITE UL CRVPTOCRYST ( t j ^ OUARTZ UN TR10VMITE UO SPINEL UP CHROMITE UO HE R C VI. ITE UR MACHEMITE US MACNETITE UT PLEONASTE UU T I TANOMACNET ITE UV ULV0SP1NEL u * p ' C O OPAOUES. ORES U9 OTHER (ADD IN DLOCK C) NON-OX I DES. NCN-SIL K A T E S VA APATITE VB CARBO'.ATE(S) VC CALC:It VD DOLCUTE VE SIDERITE VF FLUORITE VC HONAZITE uu OPAOUES. ORES VH NATIVE ELEMENT(SI VI SULFATE!SI VJ SULFIDE(S) VK CHALCOPYRITE VL PYRITE VH PYRRHOTITE V 9 O T H E R ( A D D IN B L O C K 0) n i N E R A L O l D S U A C H L O R O P H A E I T E U S C L A S S UC I D D I N O S I T E UD L E U C O X E N E U E P A L A C 0 N 1 T E U F S I D E R O M E L A N E U T O T H E R ( A D D IN B L O C K 01 C. A D D I T I O N A L N O T E S S a m p l e °\VS> 120 / t- 1~ C O N T R I B U T O R ' S N A n E C O N T R I B U T I O N NO. A. H E A P I N O R O C K N A M E I N F OR H A T I O N . j . 1 L A T I T U D E T I O N c L O N O I T U D E lfl,£1*\,J oic UNIT PtCuV' rtou»v TO-i^S REFERENCE NO. 1 B E S S E N T I A L O X I D E S S 1 0 2 T I 0 2 A L 2 0 3 F E 2 0 3 F E O MNO n c o C A O N A 2 0 K 2 0 P 2 0 3 C 0 2 H 2 0 » H 2 0 - T O T A L 131( w 67.0. 2-<A ftp J _M4 o-fi> M T 0.0>i C. T R A C E E L E M E N T S OR C O M P O N E N T S N A M E V Wfc> AMOUNT If 0 ^T IT R E F E R E N C E . ie . ID . 2A car-2D 2E 2F 2G 2H 21 NAME AMOUNT REEERENCEJ NAME AMOUNT R E F E R E N C E 3A 3B 3C 3D D. A C E S T F . A T 1 C R A P H I s. 6 C A / - L C^rttwi . R E F E R E N C E NO. I S O T O P I C OR P H Y S I C A L Y E A R S M E T H O D M A T E R I A L R E F . NO. 1 3F •3G 3H 31 E . P E T R O C R A P H 1 C D E S C R I P T O R S E R U P T I V E TYPE. MODE O F O C C U R R E N C E B N P Y R O C L A S T I C BO R I N O D I K E B P R O P Y - L A V A 4B 4C 4D 4E 4F 4G 4H 41 AA NO INFORMATION BO BR SCORIA SECRECATION AB AA BS SILL AC AOCLOMERATE ST SPATTER AD ASH BU STOCK AE ASH FLOU EV SUBAERIAL AF BATHOLITH BU SUBAQUEOUS . A C BLOCK LAVA BX SUBMARINE AH BOMB BY TEPHRA A l BOSS BZ TUFF A J BRECCIA CA TUFF-BRECCIA AK CONE SHEET CB VEIN AL DIATREME CC VOLCANIC AM DIKE (DYKE) CD VOLCANICLASTIC A N DOME CE UELDED TUFF AO EXTRUSIVE CF XENOLITH -^TAJPFLOW ^Co FLOU BRECCIA DP OTHER (ADD I°N 1 AR HYALOCLAST I TE AS HYPABYSSAL TEXTURE. STRUCTURE AT 1GNIMBRITE CRAIN SIZE AU INTRUSIVE AV INTRUSIVE (INTRUSION) BRECCIA DO NO INFORMATION AU LACCOLITH DR AMYCDULAR AX LAPILLI DS APHANITIC AY LAVA DT APHYRIC A 7 LAVA LAKE DU APLITIC BA LAYERED INTRUSION DV BANDED BB LOPOLITH DU COARSE BC NECK DX CRYPTOCRYSTLN. BD NUEE ARDENTE DY CUMULATE BE NODULE DZ D E V I T R 1 F I E D BE PAHOEHOE EA DISCRYSTALLINE BC PHACOLITH EB DOLERITIC BH PILLOU LAVA EC EUCRYSTALLINE B l PIPE ED EOUICR ANULAR BU PLUC EF FELSITIC BK PLUTON BL PLUTONIC CLASSY BM PUMICE EI FOLIATED E J C L O M E R O P O R P H . E K C N E I S S 1 C E L G R A N I T I C EM C R A N O P H Y R I C E N C R A N U L I T I C E O C R A P H I C E P H O L O C R Y S T A L L I N E E O H O L O H Y A L I N E ER H Y A L I N E E S H Y A L O P 1 L I T I C E T H Y P O C R Y S T A L L I N E E U I N T E R 3 E R T A L E V L A M P R O P H Y R I C E U L I N E A T E O E X M A S S I V E E Y M E D I U M E Z H I CR OCR Y S T A L L 1 N E F A M I C R O C R A P H I C F B M I C R O L I T I C F C M I C R O P E C M A T I T I C F D M 1 C R O P O I K 1 L I T 1 C E E M I C R O P O R P H Y R I T I C F F M I C R O S P H E R U L I T I C F O M Y R M E K I T I C F H O P H I T I C F I O R B I C U L A R F J P E C M A T I T I C F K P E R L 1 T I C F L P H A N E R I T I C F M P I L O T A X I T I C F N P L A T Y F O P O I K I L I T I C F P P O R P H Y R I T I C §P U M I C E O U S R E C R Y S T A L L I Z E D S C H I S T O S E S C O R I A C E O U S F U S E R I A T E F V S P H E R U L I T 1 C E U S P I N I F E X F X S U B O P H 1 T I C F Y T R A C H Y T I C F Z V A R I O L I T I C C A V E S I C U L A R C B V I T R E O U S C C V I T R O P H Y R I C C D X E N O C R Y S T I C HY O T H E R ( A D D I N B L O C K C ) S T A T E O F P R E S E R V A T I O N I A NO I N F O R M A T I O N IB F R E S H I C A L T E R E D S L I C H T L Y - - M C D E R A T E L Y E X T E N S I V E L Y G £ & A T P * V T T C & F W p\4 \ 0 V A ( > t - « W \ C &<-, oan'\>i'toYtiiY-pn\c I J O T H E R ( A D D IN B L O C K 0 ) T Y P E O F A L T E R A T I O N I K NO I N F O R M A T I O N I L A R C I L L I T I C I H C H L O R I T I C IN D E U T E R I C 10 F E N I T I C I P H Y D R A T E D 10 H Y D R O T H E R M A L lj» L E A C H E D O S > 1 E T A M O R P H I C T T M E T A S O M A T I C i U O X I D A T I O N I V P A L A C O N I T I C I U P R O P Y L I T I C I X P Y R I T I C I Y S A U S S U R I T I C I Z S E R I C I T I C J A S E R P E N T . I N I Z E D UB S I L 1 C I F I C A T I O N J C S O L F A T A R I C J D . W E A T H E R E D J J O T H E R ( A D D IN B L O C K C l OE Co.r-\>ono.-V\c JF pY-e.V\Y\\V\c J<-> zexAvVic. - 121 .-F FUNERAL ASSEHDLACE NA NO INFORMATION FELDSPARS. FOIDS <& N E NF NS NM N I N J O * NX . NN NO no ma NS NT MU NV en NX Mr-pa FELDSPAR ALKALI FELDSPAR ANORTHOCLASE K-FELDSPAR MICROCLINE MICROPERTHITE ORTHOCLASE PERTHITE SANIDINE »\Sv-T«. ANT IPERTHITE PLACIOCLASE NA-PLACIOCLASE Il.TCRMED PLAO CA-PLACIOCLASE ALDITE Al.SITE-OLICOCLASE OLICOCLASE OLICOCL. —ANDESN. ANDESINE ANPSN —LBRDRT. LA3RAOORITE L5RPRT. —DVTWNT. BYTOVIN1TE BYTUNT. -ANORTHITE ANORTHITE fJO> OTHER (ADD IN BLOCK 61 0 9 OTHER (ADD IN BLOCK 0 ) PHYLLOSIL1CATES- DOUPLE CHAIN SILICATES. AND A M P H T T O - O I D S P A CEP PC P E P F tl P C P H MICA BIOTITE LEPIDOLITE MUSCOVITE P H L 0 C 0 P 1 T E SERICITE. CHLORITE ' SERPENTINE P 9 O T H E R ( A D D I N B L O C K S I O A as oc 0 0 QP O E O F 0 0 O H 0 1 A M P H I B O L E B A S A L T I C H N B L N D . C U M M I N O T O N I T E H O R N B L E N D E I > « r ( i ) « J i + e A L K A L I A M P H I B O L E A R F V E O S O N I T E B A R K E V I K I T E H A S T I N C S I T E K A E R 3 U T I T E O J OK O L QM ON on KATOPHOR ITE RIEBECKITE SODIC AENICMATITE COSSYRITE RHON1TE 0 9 OTHER (ADO IN BLOCK C ) PYROXENES. PVROXFNOIDS. OLIVINES o* FELDSPATHOID RU OB ANALC1 ME RV OC CANCRIN ITE RU 00 HAU-NE RX CE KALSILITE 3* LEUCITE RY OC N2PHELINE RZ OH NOSEAN RI 0 1 PSEUD0LEUC1TE OJ SODALITE R9 RA PYROXENE RB ORTHOPYROXENE RC BR0NZ1TE RD ENSTATITE RE HYPERSTHENE RF CLINOPYROXENE RC AUGITE RH DIOPS IDE RI PI'OPSIrE-AUC'TE RJ CHR0NE-DI0PS10E RK FERROAUC'ITE RL HEDEN0ERC1TE RM HICH-AL AUCITE RN PICEONITE RO SUBCALCIC AUCITE RP TITANAUCITC RO ALKALI PYROXENE RR ACMITE RS ACM1TE-DI0PS1DE RT AEG IRINE AECIR:NE-AUC:~E AEqt.R 1NE-D1 OF SI DE OMPI+ACITE P C C T O L l T E U O L L R S T O N I T E spoOHMene R9 OTVWTZ (fV>0 IN BLOCK O> O L i u i w r FfUfflLITIC Fo«T6RITIC H w r f i C E L L I T E S A S B S C S D S 9 O T H C d t f l t t IN B L O C K G> O T H F R j I U C K T B S T A T S T C T D T E T F T I T J T K T L T M T N T O T P T O T R ( H L A N I T E A L U M l X O - S I L I C A T E S A W D A L U S I T E K V A M I T E S I L L I M A N 1 T E B E R Y L C L A Y M I N E R A L ( S ) C 0 R D 1 E R I T E E P I D O T E O A R N E T ALMANDINE A N D R A D I T E C R O S S U L A R M E L A N I T E PYROPE S P E S S A R T I N E M E L I L I T E T I T A N I T E . S P H E N E T O P A Z T S TOURMALINE T T VESUVIANITE T U ZEOLITE(S) TV CHABAZITE T U HEULANDITE T X LAUMONTITE T Y NATROLITE T Z PHILLIPSITE T l ZIRCON T 2 ZOISITE T9 OTHER (ADD I N B L O C K CI U A U3 UC UD UE UF UO UH UI UJ UO UP UO UR US UT UU ANATASE BROOKITE CASS ITERITE CORUNDUM HEMATITE ILMENITE LIMONITE PEROVSKITE PSEUDOBROOKITE RUTILE SILICA CPOUP CRIST03AL1TE CRYPTOCRYST. OUARTZ TR1DYMITE SPINEL CHROMITE HERCYNITE MACHEM1TE MAGNETITE P L E O N A S T E TITANOMACNETITE ULVOSP INEL U X P OPAOUES. ORES U9 OTHER (ADD IN BLOCK C) NON-OXIDES. NON-SILICATES VA APATITE V8 CARBONATE I S ) VC CALCIT" VO DOLOMITt VE SI DERITE VF FLUORITE VC MONAZITE U U OPAOUES. ORES VH NATIVE ELEMENT(S) VI SULFATE(S) VJ SULFIDE(S) VK CHALCOPYRITE VL PYRITE VM PYRRHOTITE V 9 O T H E R ( A D D I N B L O C K 0 ) H 1 N E R A L 0 I 0 5 U A C K L O R O P H A E I T E U B O L A S S U C I D D I N O S I T E U D L E U C O I E N E WE P A L A C 0 N 1 T E U P B I D E R O M E L A N E U 9 O T H E R ( A D D I N B L O C K 0 ) O. A D D I T I O N A L N O T E S - 122 -APPENDIX B RUBIDIUM-STRONTIUM ANALYTICAL TECHNIQUES Rb and Sr concentrations were determined by replicate analysis of pressed powder pellets using X-ray fluorescence. U.S. Geological Survey rock standards were used for cal ibration; mass absorption coefficients were obtained from Mo K Compton scattering measurements. Rb/Sr ratios have a precision of 2% ( l a ) and concentrations a precision of 5% ( l a ) . Sr isotopic composition was measured on unspiked samples prepared using standard ion exchange techniques. The mass spectrometer (60° sector, 30 cm radius, sol id source) is of U.S. National Bureau of Standards de-sign, modified by H. Faul. Data acquisition is digit ized and automated using a NOVA computer. Experimental data have been normalized to a S r 8 7 / S r 8 6 ratio of 0.1194 and adjusted so that the MBS standard SrC0 3 (SRM987) gives a S r 8 7 / S r 8 6 ratio of 0.71022 ±2 and the Eimer and Amend 87 86 Sr a ratio of 0.70800 ±2. The precision of a single Sr /Sr ratio is 0.00013 ( l a ) . Rb-Sr dates are based on a Rb decay constant of . . 1.42 x 10 "^ yr~*. The regressions are calculated according to the technique of York (1967) 

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