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The Renard 65 kimberlites : emplacement-related processes in Kimberley-type pyroclastic kimberlites :… Gaudet, Matthew A. 2016

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Renard 65 Core logs – A Readers Guide   The following core logs were completed by M.Sc. Student Matt Gaudet at the University of British Columbia as part of the submission for the M.Sc. thesis: The Renard 65 Kimberlites: emplacement-related processes in Kimberly-type pyroclastic kimberlites. Core logs are detailed macroscopic descriptions of the mineralogy and textures of kimberlite rock types encountered in continuous drill-core intersections, subdivided into intervals and sub-intervals based on fluctuations in kimberlite component features and rock textures. The format of the logs begins with a summary heading with the total crustal xenolith abundance (may also be referred to as dilution), the kimberlite rock texture (note that the archived terms TK and TKt that are used are synonymous with the rock textures KPK and KPKt as described in the thesis), and the abundance and size of olivine macrocrysts. Note that the number of B’s next to the rock texture is simply a reference to the crustal xenolith dilution and is not relevant to the reader. The interval description that follows begins with a general description of the macroscopic appearance, followed by paragraph descriptions of the features under binocular microscope, of crustal xenoliths (or country-rock xenoliths), olivine macrocrysts (olv.m), groundmass, interclast matrix, any additional features, and is concluded with a short statement from the logger. Solid lines separating intervals denote a significant change in rock-type and kimberlite component features and are generally accompanied by a sharp contact (short dashed lines the left of the interval line). Dashed lines separating intervals denote a minor change in rock-type or kimberlite component features and are generally accompanied by a gradational contact (short wavy lines to the left of the interval line). Logs were completed using a combination of full drill-core photographs and a total of 95 drill-core samples (> 10 cm in length) and accompanying petrographic thin-sections, collected by geological staff at Stornoway Diamond Corporation as part of routine drill-core sampling. These samples are referred to as “project samples” and are not the same samples used in the rest of the thesis. A total of 44 drill-core thesis samples were separately collected by the author for the polished slab descriptions, polished thin-section petrography, and all subsequent EDS/WDS analytical work. A list of the project samples is provided at the end of each core log, including information regarding their depth and macroscopic summary features as determined by Stornoway geological staff. These summaries by Stornoway geological staff may not agree with those in the authors logs, and were not in any way used in the thesis.          Abbreviations and Unfamiliar Terms  EOH – end of hole Olv.m – olivine macrocryst Olv.p – olivine phenocryst GM – groundmass ICM – interclast matrix CRx – country rock xenolith Macro – macrocryst MC – magmaclast TK – tuffisitic kimberlite, an archived rock type now synonymous with the KPK rock type TKt – transitional tuffisitic kimberlite, an archived rock type now synonymous with the KPKt rock type CRB – country rock breccia Magmaclastic texture – not applicable to coherent rock types. When applied to transitional or pyroclastic rock types, this term and the subsequent description refers to whether the rock texture is characterized by magmaclasts are visibly distinct and discrete spherical clasts (Discrete) as observed in KPK rock types, or whether they are visibly distinct but interconnected patches of coherent groundmass mottled with patches of microlitic interclast matrix (incipient) as observed in HKt rock types.  Discrete – refers to the appearance of magmaclasts. See Magmaclastic texture. Incipient – refers to the appearance of magmaclasts. See Magmaclastic texture. Cored – refers to magmaclasts containing a pyroclast or pyrocryst core Uncored – refers to magmaclasts without a pyroclast or pyrocryst core.      Renard 65 Core logs – A Readers Guide   The following core logs were completed by M.Sc. Student Matt Gaudet at the University of British Columbia as part of the submission for the M.Sc. thesis: The Renard 65 Kimberlites: emplacement-related processes in Kimberly-type pyroclastic kimberlites. Core logs are detailed macroscopic descriptions of the mineralogy and textures of kimberlite rock types encountered in continuous drill-core intersections, subdivided into intervals and sub-intervals based on fluctuations in kimberlite component features and rock textures. The format of the logs begins with a summary heading with the total crustal xenolith abundance (may also be referred to as dilution), the kimberlite rock texture (note that the archived terms TK and TKt that are used are synonymous with the rock textures KPK and KPKt as described in the thesis), and the abundance and size of olivine macrocrysts. Note that the number of B’s next to the rock texture is simply a reference to the crustal xenolith dilution and is not relevant to the reader. The interval description that follows begins with a general description of the macroscopic appearance, followed by paragraph descriptions of the features under binocular microscope, of crustal xenoliths (or country-rock xenoliths), olivine macrocrysts (olv.m), groundmass, interclast matrix, any additional features, and is concluded with a short statement from the logger. Solid lines separating intervals denote a significant change in rock-type and kimberlite component features and are generally accompanied by a sharp contact (short dashed lines the left of the interval line). Dashed lines separating intervals denote a minor change in rock-type or kimberlite component features and are generally accompanied by a gradational contact (short wavy lines to the left of the interval line). Logs were completed using a combination of full drill-core photographs and a total of 95 drill-core samples (> 10 cm in length) and accompanying petrographic thin-sections, collected by geological staff at Stornoway Diamond Corporation as part of routine drill-core sampling. These samples are referred to as “project samples” and are not the same samples used in the rest of the thesis. A total of 44 drill-core thesis samples were separately collected by the author for the polished slab descriptions, polished thin-section petrography, and all subsequent EDS/WDS analytical work. A list of the project samples is provided at the end of each core log, including information regarding their depth and macroscopic summary features as determined by Stornoway geological staff. These summaries by Stornoway geological staff may not agree with those in the authors logs, and were not in any way used in the thesis.          Abbreviations and Unfamiliar Terms  EOH – end of hole Olv.m – olivine macrocryst Olv.p – olivine phenocryst GM – groundmass ICM – interclast matrix CRx – country rock xenolith Macro – macrocryst MC – magmaclast TK – tuffisitic kimberlite, an archived rock type now synonymous with the KPK rock type TKt – transitional tuffisitic kimberlite, an archived rock type now synonymous with the KPKt rock type CRB – country rock breccia Magmaclastic texture – not applicable to coherent rock types. When applied to transitional or pyroclastic rock types, this term and the subsequent description refers to whether the rock texture is characterized by magmaclasts are visibly distinct and discrete spherical clasts (Discrete) as observed in KPK rock types, or whether they are visibly distinct but interconnected patches of coherent groundmass mottled with patches of microlitic interclast matrix (incipient) as observed in HKt rock types.  Discrete – refers to the appearance of magmaclasts. See Magmaclastic texture. Incipient – refers to the appearance of magmaclasts. See Magmaclastic texture. Cored – refers to magmaclasts containing a pyroclast or pyrocryst core Uncored – refers to magmaclasts without a pyroclast or pyrocryst core.      Renard 65 Polished Slab Descriptions – A Readers Guide   The following polished slab descriptions were completed by M.Sc. Student Matt Gaudet at the University of British Columbia as part of the submission for the M.Sc. thesis: The Renard 65 Kimberlites: emplacement-related processes in Kimberly-type pyroclastic kimberlites. Polished slab descriptions are detailed macroscopic and microscopic descriptions of the mineralogy and textures of a single kimberlite sample. The format of the polished slab description is similar to that of a single interval, beginning with a general description of the macroscopic appearance, followed by paragraph descriptions of the features under binocular microscope and petrographic thin-section, of crustal xenoliths (or country-rock xenoliths), olivine macrocrysts (olv.m), groundmass, interclast matrix, any additional features, and is concluded with a short statement from the logger and a summary of the described features.                      Abbreviations and Unfamiliar Terms  Olv.m – olivine macrocryst Olv.p – olivine phenocryst GM – groundmass ICM – interclast matrix CRx – country rock xenolith Macro – macrocryst MC – magmaclast TK – tuffisitic kimberlite, an archived rock type now synonymous with the KPK rock type TKt – transitional tuffisitic kimberlite, an archived rock type now synonymous with the KPKt rock type CRB – country rock breccia Magmaclastic texture – not applicable to coherent rock types. When applied to transitional or pyroclastic rock types, this term and the subsequent description refers to whether the rock texture is characterized by magmaclasts are visibly distinct and discrete spherical clasts (Discrete) as observed in KPK rock types, or whether they are visibly distinct but interconnected patches of coherent groundmass mottled with patches of microlitic interclast matrix (incipient) as observed in HKt rock types.  Discrete – refers to the appearance of magmaclasts. See Magmaclastic texture. Incipient – refers to the appearance of magmaclasts. See Magmaclastic texture. Cored – refers to magmaclasts containing a pyroclast or pyrocryst core Uncored – refers to magmaclasts without a pyroclast or pyrocryst core.     

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