Mechanisms of Post-Hydrothermal Deformation in Orogenic Gold Deposits : A Case Study of the Klondike Gold District, Yukon
department or school: Science, Faculty of
department or school: Earth, Ocean and Atmospheric Sciences, Department of
data provider: DSpace
degree campus: UBCV
creator: Parry, Robert Keagan
issued: 2018-05-02T17:57:30Z
issued: 2018-04
description: The Klondike Gold District (KGD) is situated in west-central Yukon, located on the pericratonic Yukon-Tanana Terrane. The region is a major producer of placer gold, famous for the Gold Rush of 1896, and has produced an estimated 10 Moz. of gold (Chapman at al., 2010) derived from gold-bearing quartz veins and greenschist Klondike Schist host rocks. This research investigates the structural controls on mineralization of the Lone Star Ridge area, providing new field observations and interpretations of the sequence of deformation events related to vein formation and gold mineralization. Overprinting relationships of ductile deformation and brittle, mineralized veins in field observations have provided evidence for deformation outlasting hydrothermal vein emplacement, contrary to the post-deformation vein emplacement hypothesis outlined in recently published literature. Detailed petrographic investigations and cathodoluminescence imaging of quartz veins and altered wall rock indicate that post-hydrothermal vein deformation has occurred and that strain partitioning may have played a role in enhancing gold grades. The evidence for post-hydrothermal vein emplacement has broad implications for the deformational history of the KGD, concluding that ductile deformation related to regional thrusting was ongoing though hydrothermal vein emplacement. Historical exploration has focused on discovering lode gold associated with primary hydrothermal veins, whereas the overprinting deformation affecting these veins may have potentially remobilized gold to later precipitate into structures controlled by the overprinting deformation.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/65760
note: i Mechanisms of Post-Hydrothermal Deformation in Orogenic Gold Deposits: A Case Study of the Klondike Gold District, Yukon By Robert Keagan Parry A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF BACHELOR OF SCIENCE (HONOURS) In THE FACULTY OF SCIENCE (Geological Sciences) This thesis conforms to the required standard ................................................................. Supervisor THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) APRIL 2018 © R. Keagan Parry, 2018 ii Table of Contents Title Page .................................................................................................................................................. i Table of Contents ..................................................................................................................................... ii List of Figures ......................................................................................................................................... iii List of Tables .......................................................................................................................................... iv Acknowledgements .................................................................................................................................. v Abstract .................................................................................................................................................... 1 Chapter 1: Introduction ............................................................................................................................ 2 Chapter 2: Regional Geology ................................................................................................................... 3 2.1 Tectonic History.................................................................................................................... 3 2.2 Regional Geology .........................................................................…
has type: Graduating Project
is shown at: 10.14288/1.0366165
language: eng
peer review status: Unreviewed
provider: Vancouver : University of British Columbia Library
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Undergraduate
is part of: University of British Columbia. EOSC 449
type: Text
identifier URI: http://hdl.handle.net/2429/65760