DOCSLIB.ORG

Downloaded from the Geoscience Data Repository for ESS Geophysical and Geochemical Data 3.4 CGB Distribution Data Collation

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

DIsTRIBuTIoN OF THE CHILc0TIN GROUP BASALTS, BRITISH COLUMBIA by JACQUELINE ANNE MARIE DOHANEY B.Sc. (Honours), Carleton University, 2006 A THESIS SUBMITTED IN PARTIAL FULLFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER IN SCIENCE in The Faculty of Graduate Studies (Geological Sciences) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) August, 2009 © Jacqueline Anne Marie Dohaney, 2009 ABSTRACT The Chilcotin Group basalts (CGB) are Oligocene to Late Pleistocene, stratified olivine-phyric basaltic lavas that overlie a large proportion of the Interior Plateau of British Columbia. The distribution of the CGB is poorly understood regionally; the current distribution is based on compilations of previously published geological maps that employ a diverse set of lithostratigraphic definitions of the Group. Exposure of the basalts is typically poor, but the thickest and most extensive sections are exposed in the valley-margins of major rivers (e.g., the Fraser River). This study collates and interprets spatial datasets and reassesses the distribution of the CGB with the intent of producing a new, more robust distribution of the CGB within the Taseko Lakes (0920) and Bonaparte Lake (092P) map areas, with the goal of better characterizing their geological history and physical volcanology. The new distribution map demonstrates several important observations: (1) the distribution of the CGB is less extensive than previous compilations by up to 48%; this implies that, regionally, the CGB is probably significantly over-estimated; (2) there are abundant, yet not previously identified “windows” through the basalt that expose underlying rock units which may be geologically and economically important; (3) CGB volcanism spanned the Oligocene to the Pleistocene (—30 Ma) and was centered in the central Fraser River area (south of Williams Lake, B.C.) throughout the Pliocene Pleistocene; (4) the CGB was likely erupted from a multitude of small-volume monogenetic vents, rather than a series of long-lived volcanic centres or fissures; and (5) the CGB is thickest where lavas ponded in paleo-valleys, providing a key to mapping the distribution of Neogene channels in the Fraser Basin drainage. II TABLE OF CONTENTS ABSTRACT ii TABLE OF CONTENTS iii LIST OF TABLES V LIST OF FIGURES Vi ACKNOWLEDGEMENTS Chapter 1: Introduction 1 1.1 Statement of problem 1 1.2 Research goals 5 Chapter 2: The Chilcotin Group basalts (CGB) 6 2.1 Regional geology 6 2.2 Previous work 14 2.3 A working definition of the Chilcotin Group 19 Chapter 3: CGB Distribution Re-Assessment 32 3.1 Purpose and scope of CGB distribution re-assessment 32 3.2 Methodology of CGB distribution re-assessment 34 3.3 CGB distribution data types and sources 36 3.3.1 Geological maps containing the CGB 37 3.3.2 Point data 42 3.3.3 Aeromagnetic surveys 56 3.4 CGB distribution data collation 58 3.4.1 Step 1: Re-interpretation of existing geological maps 58 3.4.2 Step 2: Areas of disagreement 63 3.4.3 Step 3: Refining contacts of the CGB 65 3.4.4 Step 4: Final distribution re-assessment 69 3.5 Analysis of uncertainty of the new spatial distribution of the CGB 72 Chapter 4: Discussion and Implications 74 4.1 A new distribution map for the CGB 75 4.2 Basement windows within 0920 and 092P 77 4.3 Spatial and temporal evolution of the CGB 87 4.4 History of major river systems recorded by CGB lavas 94 III conclusions. 4.5 Summary and 97 Bibliography 99 Appendix 1: Database Metadata 113 Appendix 2: UBC Geochemistry Data 118 Appendix 3: Digital Maps 120 Appendix 4: Map Compilation Steps 121 Appendix 5: Final Maps 123 iv LIST OF TABLES Table 2.1: List of sources on previous studies of the Chilcotin Group 18 Table 2.2: Stratigraphic subdivisions or formations within the Chilcotin Group 26 Table 2.3: Comparison of stratigraphic attributes of CGB versus other major Cenozoic mafic volcanic units 30 Table 3.1: Catalogue of previous mapping in area of interest (0920 and 092P) 40 Table 3.2: List of stratigraphic map units used by previous workers in 0920 and 092P map sheets 60 Table 4.1: List of major MINFILE Occurrences within Taseko Lakes and Bonaparte Lake 83 V LIST OF FIGURES Figure 1.1: Map illustrating the location of the Chilcotin Group basalts in British Columbia 3 Figure 1.2: A cartoon of lava morphology: valley vs. plateau lavas 4 Figure 2.1: Regional geological setting of the CGB 11 Figure 2.2: Schematic time scale of Cenozoic volcanic stratigraphy of the Intermontane Belt 12 Figure 2.3: Map illustrating the present-day tectonic setting of western North America 13 Figure 2.4: A schematic cross section through the Dog Creek (0920) paleo-valley 25 Figure 2.5: The total alkali’s versus silica geochemical diagram for the CGB 27 Figure 2.6: Photograph of CGB volcanic plug at Lone Butte (092P) 29 Figure 2.7: An age histogram of the CGB 31 Figure 3.1: Location of the CGB Area of Interest (NTS map sheets 0920, 092P) 33 Figure 3.2: Flow chart illustrating the steps of distribution re-assessment of the CGB.. 35 Figure 3.3: Index map showing the location and coverage of previous mapping within 0920 and 092P 41 Figure 3.4: The station table from the geospatial database of the CGB 44 Figure 3.5: A map showing the sample locations and localities 45 Figure 3.6: The spatial distribution of CGB geochronology 47 Figure 3.7: The spatial distribution of the geochemical data collected from the CGB.... 49 Figure 3.8: A map illustrating the location of the ARIS data collected from the spatial database (0920, 092P) 51 Figure 3.9: A map illustrating the locations of the public water wells data within 0920 and 092P 53 Figure 3.10: Location map and catalogue of aeromagnetic survey data 57 Figure 3.11: Several maps illustrating disagreement among previous workers in placement of geological contacts within the Vedan Lake area (0920) 61 Figure 3.12: Preliminary geological map of the CGB 62 Figure 3.13: Map illustrating areas where the database identifies disagreement with the preliminary geological map 64 Figure 3.14: Map illustrating the refinement of boundaries between the CGB and the Thuya Batholith using the first vertical gradient 67 Figure 3.15: Map showing CGB geological contacts which were modified during Step 3 68 Figure 3.16: Two maps (A, B) illustrating final modifications to CGB distribution in Step 4 of re-interpretation 70 Figure 3.17: Kreiged surface illustrating the qualitative uncertainty of the new spatial distribution of the CGB 73 Figure 4.1: Map comparing the previous compilations with a new distribution of the CGB 76 Figure 4.2: New basement windows in 0920 and 092P 81 Figure 4.3: New economic targets in 0920 and 092P 84 Figure 4.4: Regional Geochemical Survey multi-element data maps for 0920 and 092P 85 vi Figure 4.5: The regional temporal and spatial evolution of the CGB from Oligocene time to Present 90 Figure 4.6: Volcanic necks and major fault lineaments within the Interior Plateau 93 Figure 4.7: Paleo-fluvial drainage networks in the Interior of British Columbia recorded by the Chilcotin Group 96 VII ACKNOWLEDGEMENTS 3rd This study was funded through the Geological Survey of Canada’s Targeted Geoscience Initiative (TGI-03). I received financial support through an ACCELERATE BC Internship funded by Mathematics of Information Technology and Complex Systems (MITACS), Egil H Lorntzsen Scholarship, and a Geoscience BC Graduate Scholarship. I would first like to thank Kelly for being consistently available when I needed guidance, and for always developing new ideas instead of recycling old ones — even with Masters Projects. I would like to thank Jim, and Bob for being excellent committee members and providing ideas, criticisms and assistance through the entire process. I would like to thank Jamel Joseph, Randy Enkin, Mitch Mihalynuk, Paul Schiarizza, Steven Williams, Katrin Breitsprecher, Jordan Best, Mary Lou Bevier, and Arne Toma for providing technical and geological support, and advice. Graham, I think it goes without saying that none of this work would have been possible without your help, patience and intellect. I thank you for encouraging and sharing scientific discussion with myself and other members of the lab. R-E, I want to thank you for your collaboration in our projects and persistence through everything this year. To my other fellow VPLers — Nils, Geeves, Shelley, Steve and Curtis: I am very thankful that we worked through our projects together, and supported one another, even when it seemed like there was no progress and no hope. Many thanks to Lucy, Kevin, Chris, Dan, Rosie, Andrew, Gareth, Mat, Ben, and many other graduate students for great discussions, celebrations and much needed distractions these past two years. To my family and friends who helped me through many days with words of encouragement, faith and understanding. And lastly, to my father, VIII who always asks about my work and has brought me up to love science and my grandfather John who congratulated me on this great achievement in his last days with us. Ix CHAPTER 1: INTRODUCTION 1.1 Statement of problem The Chilcotin Group basalts (CGB) comprise a series of Cenozoic aged, flat-lying basaltic lavas that cover the majority of the Interior Plateau (NTS 0920, P; 093A, B, C, F, G, J, K, L; 083D; 082M) and a portion of the Okanagan Highlands (92H, I; 082E, L) of British Columbia, Canada (Figure 1.1). The Interior Plateau is a composite physiographic region that contains several highlands and plateaus (Tribe, 2005). These basalts are exposed primarily in the walls of present-day river drainages, such as the Fraser and Chilcotin rivers, and as erosional remnants on the peaks of the eastern portion of the Coast Mountains, and the Okanagan Highlands.
Recommended publications
  • Late Prehistoric Cultural Horizons on the Canadian Plateau

    Late Prehistoric Cultural Horizons on the Canadian Plateau

    LATE PREHISTORIC CULTURAL HORIZONS ON THE CANADIAN PLATEAU Department of Archaeology Thomas H. Richards Simon Fraser University Michael K. Rousseau Publication Number 16 1987 Archaeology Press Simon Fraser University Burnaby, B.C. PUBLICATIONS COMMITTEE Roy L. Carlson (Chairman) Knut R. Fladmark Brian Hayden Philip M. Hobler Jack D. Nance Erie Nelson All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or any information storage and retrieval system, without permission in writing from the publisher. ISBN 0-86491-077-0 PRINTED IN CANADA The Department of Archaeology publishes papers and monographs which relate to its teaching and research interests. Communications concerning publications should be directed to the Chairman of the Publications Committee. © Copyright 1987 Department of Archaeology Simon Fraser University Late Prehistoric Cultural Horizons on the Canadian Plateau by Thomas H. Richards and Michael K. Rousseau Department of Archaeology Simon Fraser University Publication Number 16 1987 Burnaby, British Columbia We respectfully dedicate this volume to the memory of CHARLES E. BORDEN (1905-1978) the father of British Columbia archaeology. 11 TABLE OF CONTENTS Page Acknowledgements.................................................................................................................................vii List of Figures.....................................................................................................................................iv
  • The Archive of Place 00Front.Qxd 4/27/2007 6:48 AM Page Ii

    The Archive of Place 00Front.Qxd 4/27/2007 6:48 AM Page Ii

    00front.qxd 4/27/2007 6:48 AM Page i The Archive of Place 00front.qxd 4/27/2007 6:48 AM Page ii The Nature | History | Society series is devoted to the publication of high-quality scholarship in environmental history and allied fields. Its broad compass is signalled by its title: nature because it takes the natural world seriously; history because it aims to foster work that has temporal depth; and society because its essential concern is with the interface between nature and society, broadly conceived. The series is avowedly interdisciplinary and is open to the work of anthropologists, ecologists, historians, geographers, literary scholars, political scientists, sociologists, and others whose interests resonate with its mandate. It offers a timely outlet for lively, innovative, and well-written work on the interaction of people and nature through time in North America. General Editor: Graeme Wynn, University of British Columbia Claire Elizabeth Campbell, Shaped by the West Wind: Nature and History Tina Loo, States of Nature: Conserving Canada’s Wildlife in the Twentieth Century Jamie Benidickson, The Culture of Flushing: A Social and Legal History of Sewage John Sandlos, Hunters at the Margin: Native People and Wildlife Conservation in the Northwest Territories James Murton, Creating a Modern Countryside: Liberalism and Land Resettlement in British Columbia 00front.qxd 4/27/2007 6:48 AM Page iii The Archive of Place Unearthing the Pasts of the Chilcotin Plateau . UBC Press • Vancouver • Toronto 00front.qxd 4/27/2007 6:48 AM Page iv © UBC Press All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, without prior written permission of the publisher, or, in Canada, in the case of photocopying or other reprographic copying, a licence from Access Copyright (Canadian Copyright Licensing Agency), www.accesscopyright.ca.
  • Midcretaceous Thrusting in the Southern Coast Belt, British

    Midcretaceous Thrusting in the Southern Coast Belt, British

    TECTONICS, VOL. 15, NO. 2, PAGES, 545-565, JUNE 1996 Mid-Cretaceous thrusting in the southern Coast Belt, British Columbia and Washington, after strike-slip fault reconstruction Paul J. Umhoefer Departmentof Geology,Northern Arizona University, Flagstaff Robert B. Miller Departmentof Geology, San JoseState University, San Jose,California Abstract. A major thrust systemof mid-Cretaceousage Introduction is presentalong much of the Coast Belt of northwestern. The Coast Belt in the northwestern Cordillera of North North America. Thrusting was concurrent,and spatially America containsthe roots of the largest Mesozoic mag- coincided,with emplacementof a great volume of arc intrusives and minor local strike-slip faulting. In the maticarc in North America, which is cut by a mid-Creta- southernCoast Belt (52ø to 47øN), thrusting was followed ceous,synmagmatic thrust system over muchof its length by major dextral-slipfaulting, which resultedin significant (Figure 1) [Rubin et al., 1990]. This thrust systemis translationalshuffling of the thrust system. In this paper, especiallywell definedin SE Alaska [Brew et al., 1989; Rubin et al., 1990; Gehrels et al., 1992; Haeussler, 1992; we restorethe displacementson major dextral-slipfaults of the southernCoast Belt and then analyze the mid-Creta- McClelland et al., 1992; Rubin and Saleeby,1992] and the southern Coast Belt of SW British Columbia and NW ceousthrust system. Two reconstructionswere madethat usedextral faulting on the Yalakom fault (115 km), Castle Washington(Figure 1)[Crickmay, 1930; Misch, 1966; Davis et al., 1978; Brown, 1987; Rusrnore aad Pass and Ross Lake faults (10 km), and Fraser fault (100 Woodsworth, 199 la, 1994; Miller and Paterson, 1992; km). The reconstructionsdiffer in the amount of dextral offset on the Straight Creek fault (160 and 100 km) and Journeayand Friedman, 1993; Schiarizza et al.
  • Pleistocene Volcanism in the Anahim Volcanic Belt, West-Central British Columbia

    Pleistocene Volcanism in the Anahim Volcanic Belt, West-Central British Columbia

    University of Calgary PRISM: University of Calgary's Digital Repository Graduate Studies The Vault: Electronic Theses and Dissertations 2014-10-24 A Second North American Hot-spot: Pleistocene Volcanism in the Anahim Volcanic Belt, west-central British Columbia Kuehn, Christian Kuehn, C. (2014). A Second North American Hot-spot: Pleistocene Volcanism in the Anahim Volcanic Belt, west-central British Columbia (Unpublished doctoral thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/25002 http://hdl.handle.net/11023/1936 doctoral thesis University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Downloaded from PRISM: https://prism.ucalgary.ca UNIVERSITY OF CALGARY A Second North American Hot-spot: Pleistocene Volcanism in the Anahim Volcanic Belt, west-central British Columbia by Christian Kuehn A THESIS SUBMITTED TO THE FACULTY OF GRADUATE STUDIES IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY GRADUATE PROGRAM IN GEOLOGY AND GEOPHYSICS CALGARY, ALBERTA OCTOBER, 2014 © Christian Kuehn 2014 Abstract Alkaline and peralkaline magmatism occurred along the Anahim Volcanic Belt (AVB), a 330 km long linear feature in west-central British Columbia. The belt includes three felsic shield volcanoes, the Rainbow, Ilgachuz and Itcha ranges as its most notable features, as well as regionally extensive cone fields, lava flows, dyke swarms and a pluton. Volcanic activity took place periodically from the Late Miocene to the Holocene.
  • Eocene Paleo-Physiography and Drainage Directions, Southern Interior Plateau, British Columbia1

    Eocene Paleo-Physiography and Drainage Directions, Southern Interior Plateau, British Columbia1

    215 Eocene paleo-physiography and drainage directions, southern Interior Plateau, British Columbia1 Selina Tribe Abstract: A map of reconstructed Eocene physiography and drainage directions is presented for the southern Interior Plateau region, British Columbia south of 53°N. Eocene landforms are inferred from the distribution and depositional paleoenvironment of Eocene rocks and from crosscutting relationships between regional-scale geomorphology and bedrock geology of known age. Eocene drainage directions are inferred from physiography, relief, and base level elevations of the sub-Eocene unconformity and the documented distribution, provenance, and paleocurrents of early Cenozoic fluvial sediments. The Eocene landscape of the southern Interior Plateau resembled its modern counterpart, with highlands, plains, and deeply incised drainages, except regional drainage was to the north. An anabranching valley system trending west and northwest from Quesnel and Shuswap Highlands, across the Cariboo Plateau to the Fraser River valley, contained north-flowing streams from Eocene to early Quaternary time. Other valleys dating back at least to Middle Eocene time include the North Thompson valley south of Clearwater, Thompson valley from Kamloops to Spences Bridge, the valley containing Nicola Lake, Bridge River valley, and Okanagan Lake valley. During the early Cenozoic, highlands existed where the Coast Mountains are today. Southward drainage along the modern Fraser, Chilcotin, and Thompson River valleys was established after the Late Miocene. Résumé : Cet article présente une carte reconstituée de la géographie physique et des directions de drainage, à l’Éocène, pour la région du plateau intérieur de la Colombie-Britannique, au sud du 53e parallèle Nord. Les formes de terrain à l’Éocène sont déduites de la distribution et du paléoenvironnement de déposition des roches de l’Éocène et à partir de relations de recoupement entre la géomorphologie à l’échelle régionale et la géologie du socle, d’âge connu.
  • PRELIMINARY CONSERVATION ASSESSMENT of the RAINSHADOW WILD HORSE ECOSYSTEM, Brittany Triangle, Chilcotin, British Columbia, Canada

    PRELIMINARY CONSERVATION ASSESSMENT of the RAINSHADOW WILD HORSE ECOSYSTEM, Brittany Triangle, Chilcotin, British Columbia, Canada

    PRELIMINARY CONSERVATION ASSESSMENT of the RAINSHADOW WILD HORSE ECOSYSTEM, Brittany Triangle, Chilcotin, British Columbia, Canada. A review of GRIZZLY AND BLACK BEARS, OTHER WILDLIFE, FERAL HORSES & WILD SALMON March, 2002 By Wayne McCrory, RPBio. Submitted to McCrory Wildlife Services Ltd. Friends of the Nemaiah Valley PO Box 479, New Denver, BC, V0G 1S0, Canada 1010 Foul Bay Road Victoria, BC V8S 4J1 Ph: 250-358-7796; E-mail: [email protected] 250 592-1088 www.fonv.ca [email protected] i With thanks to the Xeni Gwet’in First Nation for welcoming us on to their traditional territory to carry out this research Xeni Gwet’in Chief Roger William on trail in Brittany Triangle in September, 2001 Suggested Citation: McCrory, W.P. 2002. Preliminary conservation assessment of the Rainshadow Wild Horse Ecosystem, Brittany Triangle, Chilcotin, British Columbia, Canada. A review of grizzly and black bears, other wildlife, wild horses, and wild salmon. Report for Friends of Nemaiah Valley (FONV), 1010 Foul Bay Road, Victoria, B.C. V8S 4J1. [Copies available from FONV at cost. For more information see: http://www.fonv.ca. Copying and distribution of this report are encouraged. Readers are welcome to cite this report but are requested that citations and references be acknowledged and placed in context]. ii One of two wild horse herds studied in Nuntsi Provincial Park in 2001. Hundreds of these small and large meadows are scattered throughout the pine forests of the Brittany Triangle, providing important habitats for wild horses, grizzly and black bears, and other wildlife from spring to fall. Over the long Chilcotin winter, the horses survive on grasses and sedges in these meadow areas as well as pine grass in the adjacent forests.
  • RECONNAISSANCE TILL GEOCHEMISTRY on the CHILCOTZN PLATEAU (92015 and 12) by A

    RECONNAISSANCE TILL GEOCHEMISTRY on the CHILCOTZN PLATEAU (92015 and 12) by A

    RECONNAISSANCE TILL GEOCHEMISTRY ON THE CHILCOTZN PLATEAU (92015 AND 12) By A. Plouffe, Geological Survey of Canada Geolonical Survey of Canada Contribution 22495 KEYWORDS: Drift prospecting, applied geochemistry, analyses of till and glaciofluvial samples. The objectives mineral exploration, ice-flow direction, till, glaciofluvial of this report are to summarize the ice-flow history, to sediments, dispersal train, porphyry copper-gold. elaborate on the interpretations of geochemical anomalies in till, and relate geochemical data for till to geophysical INTRODUCTION andbiogeochemical data obtained from other studies. New geochemical data for till samples fromthe NewtonHill area As part of the Canada - British Columbia Agreement are also presented. on Mineral Development (1991-1995). a reconnaissance surficial sediment sampling program was carried out in 1992 and 1993 over the Chilcotin Plateau, in west-central LOCATION AND PHYSIOGRAPHY British Columbia (Figure 1). The survey was designed for two purposes: to test the potential of drift prospecting for The study area covers two 150 000-scale NTS map detecting mineralization, and to determine background sheets : 92015 and 0112 (Mount Tatlow and Elkin Creek, metal concentrations in surlicial sediments. A total of 118 respectively) and extends over the southern part of a third till and 26 glaciofluvial sediment samples were collected map 920113 which covers the Newton Hill area (Figures 1 during this survey (Figure 2). and 2). The southwestern part of the study area lies in the The Chilcotin Plateau was selected for investigation because it hosts several important deposits such as the Fish Lake porphyry copper-gold deposit. It is characterized by an extensive cover of unconsolidated sediments which inhibit the use of conventional exploration methods and glacial ice-flow history in the areais uncomplicated (Figure 3).
  • In the Supreme Court of British Columbia

    In the Supreme Court of British Columbia

    No. 90 0913 Victoria Registry IN THE SUPREME COURT OF BRITISH COLUMBIA BETWEEN: ROGER WILLIAM, on his own behalf and on behalf of all other members of the Xeni Gwet’in First Nations Government and on behalf of all other members of the Tsilhqot’in Nation PLAINTIFF AND: HER MAJESTY THE QUEEN IN RIGHT OF THE PROVINCE OF BRITISH COLUMBIA, THE REGIONAL MANAGER OF THE CARIBOO FOREST REGION and THE ATTORNEY GENERAL OF CANADA DEFENDANTS PLAINTIFF’ S REPLY APPENDIX 1B PLAINTIFF’S RESPONSE TO THE DEFENDANTS’ SUBMISSIONS ON DEFINITE TRACTS OF LAND WOODWARD & ATTORNEY GENERAL DEPARTMENT OF COMPANY OF BRITISH COLUMBIA JUSTICE, CANADA Barristers and Solicitors Civil Litigation Section Aboriginal Law Section 844 Courtney Street, 2nd Floor 3RD Floor, 1405 Douglas Street 900 – 840 Howe Street Victoria, BC V8W 1C4 Victoria, BC V8W 9J5 Vancouver, B.C. V6Z 2S9 Solicitors for the Plaintiff Solicitor for the Defendants, Her Solicitor for the Defendant, Majesty the Queen in the Right of The Attorney General of Canada the Province of British Columbia and the Manager of the Cariboo Forest Region ROSENBERG & BORDEN LADNER ROSENBERG GERVAIS LLP Barristers & Solicitors Barristers & Solicitors 671D Market Hill Road 1200 Waterfront Centre, 200 Vancouver, BC V5Z 4B5 Burrard Street Solicitors for the Plaintiff Vancouver, BC V7X 1T2 Solicitor for the Defendants, Her Majesty the Queen in the Right of the Province of British Columbia and the Manager of the Cariboo Forest Region Exhibit 43 Photograph 38 Plaintiff’s Reply Appendix 1B Plaintiff’s Response to the Defendants’ Submissions on Definite Tracts of Land A. Southeast Tsilhqox Biny (Chilko Lake): west Ts’il?os (Mount Tatlow) and Relevant Portions of the Tl’echid Gunaz (Long Valley), Yuhitah (Yohetta Valley), Ts’i Talhl?ad (Rainbow Creek), Tsi Tese?an (Tchaikazan Valley) and Tsilhqox Tu Tl’az (Edmonds River) Watersheds ....................................................................................................................................
  • Number Edition Name Year Valid Year Printed Datum UTM 082E 04

    Number Edition Name Year Valid Year Printed Datum UTM 082E 04

    Number Edition Name Year Valid Year Printed Datum UTM 082E 04 PENTICTON BC 1992 1995 NAD83 11 082L 02 VERNON BC 1984 1989 NAD27 11 082M 04 SEYMOUR ARM BC 1987 1995 NAD27 11 092B 03 VICTORIA BC 1992 1995 NAD83 10 092C 04 CAPE FLATTERY BC 1992 1996 NAD83 10 092D 02 PART OF 092E NOOTKA SOUND BC 1989 1994 NAD83 9 092E 02 NOOTKA SOUND BC 1989 1994 NAD83 9 092F 04 PORT ALBERNI BC 1984 1990 NAD27 10 092G 03 VANCOUVER BC 1992 1995 NAD83 10 092H 03 HOPE BC 1984 1990 NAD27 10 092I 03 ASHCROFT BC 1984 1987 NAD27 10 092J 02 PEMBERTON BC 1986 1989 NAD27 10 092K 03 BUTE INLET BC 1993 1996 NAD83 10 092L 03 ALERT BAY BC 1991 1995 NAD83 9 092M 03 RIVERS INLET BC 1992 1996 NAD83 9 092N 02 MOUNT WADDINGTON BC 1984 1986 NAD27 10 092O 03 TASEKO LAKES BC 1986 1990 NAD27 10 092P 03 BONAPARTE LAKE BC 1992 1997 NAD83 10 102I 02 CAPE SCOTT BC 1982 1988 NAD27 9 102P 03 QUEENS SOUND BC 1992 1995 NAD83 9 082E01 02 GRAND FORKS BC 1976 1978 NAD27 11 082E02 02 GREENWOOD BC 1976 1977 NAD27 11 082E03 02 OSOYOOS BC 1976 1977 NAD27 11 082E04 04 KEREMEOS BC 1985 1988 NAD27 11 082E05 04 PENTICTON BC 1985 2001 NAD83 11 082E06 03 BEAVERDELL BC 1976 1978 NAD27 11 082E07 02 ALMOND MOUNTAIN BC 1976 1977 NAD27 11 082E08 02 DEER PARK BC 1976 1978 NAD27 11 082E09 02 BURRELL CREEK BC 1976 1978 NAD27 11 082E10 02 CHRISTIAN VALLEY BC 1976 1977 NAD27 11 082E11 02 WILKINSON CREEK BC 1976 1978 NAD27 11 082E12 04 SUMMERLAND BC 1985 2000 NAD83 11 082E13 04 PEACHLAND BC 1985 2001 NAD83 11 082E14 04 KELOWNA BC 1985 1999 NAD83 11 082E15 02 DAMFINO CREEK BC 1976 1978 NAD27 11 082E16 02 EDGEWOOD
  • The Cheslatta Lake Suite: Miocene Mafic, Alkaline Magmatism in Central British Columbia1

    The Cheslatta Lake Suite: Miocene Mafic, Alkaline Magmatism in Central British Columbia1

    Color profile: Disabled Composite Default screen 697 The Cheslatta Lake suite: Miocene mafic, alkaline magmatism in central British Columbia1 Robert G. Anderson, Jonah Resnick, James K. Russell, G.J. Woodsworth, Michael E. Villeneuve, and Nancy C. Grainger Abstract: New mapping, mineralogical, and geochemical studies help characterize late Tertiary primitive, alkaline, sodic basanite, alkali olivine basalt, transitional basalt, and diabase in the Nechako River, Whitesail Lake, and McLeod Lake map areas of central British Columbia and distinguish the Miocene Cheslatta Lake suite. The suite encompasses scattered erosional remnants of topographically distinct, columnar-jointed, olivine-phyric basalt and diabase volcanic necks, dykes, and associated lava flows north of the Anahim volcanic belt and west of the Pinchi Fault. Volcanic cen- tres at Alasla Mountain and at Cutoff Creek, near Cheslatta Lake, are proposed as type areas. Olivine, plagioclase, and pyroxene phenocrysts, megacrysts, and (or) xenocrysts; common ultramafic xenoliths; and rare but significant plutonic and metamorphic xenoliths are characteristic. Basanite, transitional basalt, and alkali olivine basalt groundmass contain plagioclase, clinopyroxene, Fe-Ti oxides, feldspathoid, olivine, and apatite. The Cheslatta Lake suite is characterized by its alkaline character, olivine-rich (>10 wt.%) normative mineralogy, and silica-undersaturated nature (>1 wt.% norma- tive nepheline; hypersthene-normative rocks are uncommon). Mg numbers vary between 72–42. Some samples encom- pass
  • Ridge Subduction and Slab Window Magmatism in Western North America

    Ridge Subduction and Slab Window Magmatism in Western North America

    Cenozoic to Recent plate confi gurations in the Pacifi c Basin: Ridge subduction and slab window magmatism in western North America J.K. Madsen*† D.J. Thorkelson* Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada R.M. Friedman* Pacifi c Centre for Isotopic and Geochemical Research, Department of Earth and Ocean Science, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada D.D. Marshall* Department of Earth Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada ABSTRACT Keywords: tectonics, magmatism, geochro- and temporally complex and spans Paleocene to nology, forearc, slab window, ridge subduc- Miocene time. The most spatially and tempo- Forearc magmatic rocks were emplaced in tion, western North America, Cordillera. rally coherent portion is the eastward-younging a semicontinuous belt from Alaska to Oregon Sanak-Baranof Belt in southern to southeastern from 62 to 11 Ma. U-Pb and 40Ar-39Ar dating INTRODUCTION Alaska (Bradley et al., 1993; Haeussler et al., indicates that the magmatism was concur- 1995; Bradley et al., 2003). The age progres- rent in widely separated areas. Eight new Forearcs are typically amagmatic with low sion has been attributed to the passage of an conventional isotope dilution–thermal ion- heat fl ow (Gill, 1981); however, subduction of a eastwardly migrating ridge-trench-trench triple ization mass spectrometry (ID-TIMS) U-Pb mid-ocean ridge imparts a thermal pulse into the junction related to the subduction of a mid-ocean zircon ages from forearc intrusions on Van- forearc, which may result in near-trench mag- spreading ridge in Paleocene to middle Eocene couver Island (51.2 ± 0.4, 48.8 ± 0.5 Ma, 38.6 matism (Marshak and Karig, 1977; DeLong et time (Hill et al., 1981; Bradley et al., 1993; Sisson ± 0.1, 38.6 ± 0.2, 37.4 ± 0.2, 36.9 ± 0.2, 35.4 al., 1979; Sisson et al., 2003).
  • Doug Wilson's

    Doug Wilson's

    Doug Wilson’s - Submission to the New Prosperity Mine Review 21 September 2012 Douglas W. Wilson September 21, 2012 Canadian Environmental Assessment Agency 22nd Floor, Place Bell 160 Elgin Street Ottawa ON K1A 0H3 Dear Commission Re: Submission Regarding the New Prosperity Mine Project Although retired, as a long term resident of the Cariboo/Chilcotin Central Coast area of British Columbia I have a great interest in the economic opportunities that the development of the New Prosperity Mine would have within the Cariboo/Chilcotin Central Coast area of British Columbia. I see this mine development providing long term employment directly and indirectly for hundreds and possibly thousands. While I support the New Prosperity project, I believe it is our responsibility as Canadians to insure that such development meets and maintains stringent environmental standards. If these standards can be maintained and enforced, couple this with the actual record of Taseko Mines, and the Gibraltar/ McLeese Lake operation, in existence since the early 1970’s, Taseko Mines have shown great respect for the environment, and it is with this experience also coupled with Federal and Provincial environmental regulations that I support the development of the New Prosperity Mine Development. Regarding those that are against the development of this mine, I find the people called Xeni Gwet’in and the people called Chilcotin to be truly wonderful people with reasonable dreams and aspirations. It is cultural differences and community life styles where conflict seems to rest between dreams and aspirations. The world is in a continual state of change young Xeni Gwet’in and Chilcotin native people; in an increasing awareness of the things of the world are also having an increasing desire to have the things of the world.