ICAL SURVEY OF CANADA IQUE DU CANADA NOTICE TO LIBRARIANS AND INDEXERS The Geological Survey's Current Research series contains many reports comparable in scope and subject matter to those appearing in scientific journals and other serials. Most contributions to Current Research include an abstract and bibliographic citation. It is hoped that these will assist you in cataloguing and indexing these reports and that this will result in a still wider dissemination of the results of the Geological Survey's research activities. AVIS AUX BIBLIOTH~CAIRESET PREPARATEURS D'INDEX La skrie Recherches en cours de la Commission gtologique contient plusieurs rapports dont la portke et la nature sont comparables 2 ceux qui paraissent dans les revues scientifiques et autres pkriodiques. La plupart des articles publiks dans Recherches en cours sont accompagnks d'un rdsumt et d'une bibliographie, ce qui vous permettra, on l'espbre, de cataloguer et d'indexer ces rapports, d'oa une meilleure diffusion des rdsultats de recherche de la Commission gkologique. GEOLOGICAL SURVEY OF CANADA COMMISSION GEOLOGIQUE DU CANADA CURRENT RESEARCH 1995-A CORDILLERA AND PACIFIC MARGIN RECHERCHES EN COURS 1995-A CORDILLERE ET MARGE DU PACIFIQUE O~inisterof Energy, Mines and Resources Canada 1995 Available in Canada through authorized bookstore agents and other bookstoresor by mail from Canada Communication Group - Publishing Ottawa, Canada KIA 0S9 and from Geological Survey of Canada offices: 601 Booth Street Ottawa, Canada KIA 0E8 3303-33rd Street N.W., Calgary, Alberta T2L 2A7 100 West Pender Street Vancouver, B.C. V6B 1R8 A deposit copy of this publication is also available for reference in public libraries across Canada Cat. No. M44-199511E ISBN 0-660-15808-6 Price subject to change without notice Cover description View of a pale brown weathering barite "kill zone", Driftpile deposit, Gataga district, Northeastern British Columbia. (Photo by SuzanneParadis, August 1994; GSC 1994-788 B). Description de la photo couverture Vue d'une ctzone morten dCpourvue de vCgCtation, de barytine couleur dJaltCration brun pilc, au gisement Driftpile, district de Gataga, dans le nord-est de la Colombie-Britannique. (Photo prise par Suzanne Paradis, aorit 1994; GSC 1994-788 B). ! GEOLOGICAL SURVEY OF CANADA SECTOR Office of the ASSISTANT DEPUTY MINISTER Chief Scientist SOUS-MINISTRE ADJDINT Bureau du SECTEUR DE LA Scientifique principal COMMISSION GEOLOGlQllE du CANADA iI Geophysics. Sedimentary and Minerals and Continental Marine Geoscience Branch Geoscience Branch Direction de la giophysique, Direction des ressources minerales et de la geologie et de la gkologie du continent k Mineral Continental Quebec Pacific Atlantic Resources Geoscience Geoscience Geoscience Geoscience Geophysics Division Division Centre Centre 1 Centre 1 1 1 Centre Division des Division de la Centre Centre Division de la ressources gkologie du gkoscientifique gioscientifique gkoscientifique rninkrales continent 1 de Atlantioue 1 1 giOphysique 1 Institute of Cordilleran Sedimentaly Division Sciences Division and Petroleum Geology Cordillkre sciences lnstitut de des Terrains gkologie sedimentaire et LpQrolli6re Polar 1 Coordination and Planning Information and Continental Division Communications Shelf Project Division de la coordination Division ttude du I et de la planification I Division de plateau I'inforrnation continental gkoscientifique I polaire I et des communications Separates Tires part A limited number of separates of the papers that appear in On peut obtenir un nombre limit6 de ctir6s 21 part>>des this volume are available by direct request to the individual articles qui paraissent dans cette publication en s'adressant authors. The addresses of the Geological Survey of Canada directement B chaque auteur. Les adresses des differents offices follow: bureaux de la Commission gkologique du Canada sont les suivantes: 601 Booth Street 601, rue Booth OTTAWA, Ontario OTTAWA, Ontario KIA OE8 KIA OE8 (FAX: 6 13-996-9990) (facsimilk : 61 3-996-9990) Institute of Sedimentary and Petroleum Geology Institut de geologie sedimentaire et pCtrolibre 3303-33rd Street N.W. 3303-33rd St. N.W., CALGARY, Alberta CALGARY, Alberta T2L 2A7 T2L 2A7 (FAX: 403-292-5377) (facsimilk : 403-292-5377) Cordilleran Division Division de la Cordillkre 100 West Pender Street 100 West Pender Street VANCOUVER, B.C. VANCOUVER, British Columbia V6B 1R8 V6B 1R8 (FAX: 604-666- 1124) (facsimil6 : 604-666-1 124) Pacific Geoscience Centre Centre geoscientifique du Pacifique P.O. Box 6000 P.O. Box 6000 9860 Saanich Road 9860 Saanich Road SIDNEY, B.C. SIDNEY, British Columbia V8L 4B2 V8L 4B2 (Fax: 604-363-6565) (facsimilk : 604-363-6565) Atlantic Geoscience Centre Centre geoscientifique de 1'Atlantique Bedford Institute of Oceanography Institut oc6anographique Bedford P.O. Box 1006 B.P. 1006 DARTMOUTH, N.S. DARTMOUTH, Nova Scotia B2Y 4A2 B2Y 4A2 (FAX: 902-426-2256) (facsimile : 902-426-2256) QuCbec Geoscience Centre Centre geoscientifique de Quebec 2700, rue Einstein 2700, rue Einstein C.P. 7500 C.P. 7500 Ste-Foy (Qu6bec) Ste-Foy (QuCbec) G1V 4C7 G1V 4C7 (FAX: 4 18-654-2615) (facsimile : 41 8-654-2615) When no location accompanies an author's name in the Lorsque l'adresse de l'auteur ne figure pas sous le titre title of a paper, the Ottawa address should be used. d'un document, on doit alors utiliser l'adresse d'ottawa. CONTENTS Progress report and field activities of the Fraser Valley hydrogeology project, British Columbia B.D. Ricketts ..........................................$1 The groundwater database, Fraser Valley, British Columbia B.D. Ricketts and D. Dunn ...................................7 Preliminary results from a shallow seismic reflection survey, Lower Fraser Valley hydrogeology project, British Columbia S.E. Pullan, R.L. Good, and B.D. Ricketts .......................... 11 Groundwater mapping using time-domain electromagnetics: examples from the Fraser Valley, British Columbia M.E. Best, B. Todd, and D. O'Leary ............................. 19 Shear wave velocities of Holocene sediments, Fraser River delta, British Columbia J.A. Hunter ...........................................29 Ground penetrating radar survey of the Katz slide, southwestern British Columbia G.R.Brooks and J.A. Pilon ..................................33 Cretaceous fossil identifications, Coast Belt, British Columbia J.W. Haggart ..........................................41 Early historical and ethnographical accounts of large earthquakes and tsunamis on western Vancouver Island, British Columbia J.J. Clague ...........................................47 Preliminary studies of hydrothermal alteration events at the Island Copper deposit, northern Vancouver Island, British Columbia C.H.B. Leitch, K.V. Ross, J.A. Fleming, and K.M. Dawson ................51 Comparison of drape-flown and computationally draped aeromagnetic data in central British Columbia M. Pilkington, W.R. Roest, K.C.H. Kwan, and R. Dumont ................61 Tertiary volcanic stratigraphy of the Clisbako River area, central British Columbia1 P. Metcalfe and C. J. Hickson .................................67 Current status of the Interior Plateau Program, Canada-British Columbia Agreement on Mineral Development (199 1- 1995) P. van der Heyden, P. Mustard, P. Metcalfe, R. Shives, A. Plouffe, D. Teskey, and C. Dunn .............................75 Durchbewegt sulphides, piercement structures, and gabbro dyke displacement in the vent complex of the Sullivan Pb-Zn deposit, British Columbia Jari J. Paakki, John W. Lydon, and Noris Del Be1 ~elluzl................. 81 A note on U-Pb dating of Middle Jurassic plutonic suites: Cumshewa Head pluton, southeastern Moresby Island, Queen Charlotte Islands, British Columbia R.G. Anderson and V.J. McNicoll ..............................9 1 New K-Ar and U-Pb dates for the Cambria Icefield area, northwestern British Columbia C.J. Greig, V.J. McNicoll, R.G. Anderson, P.H. Daubeny, J.E. Harakal, and D. Runkle ......................................... 97 Revised stratigraphy for the Hoodoo Mountain volcanic centre, northwestern British Columbia B.R. Edwards, G. Edwards, and J.K. Russell ....................... 105 Investigations in the Dorsey terrane, Part 1: stratigraphy, structure, and metamorphism in the Dorsey Range, southern Yukon Territory and northern British Columbia R.A. Stevens and T.A. Harms ................................ 117 Investigations in the Dorsey terrane, Part 2: lithologies and structure of (?)Paleozoic stratified rocks in the Stikine Ranges, northern British Columbia T.A. Harms and R.A. Stevens ................................ 129 Structure and terrane relationships of Cassiar and Kootenay (Yukon-Tanana) terranes, Teslin map area, southern Yukon Territory S.P. Gordey .......................................... 135 New stratigraphy and structures in eastern Lansing map area, central Yukon Territory C.F. Roots, J.G. Abbott, M.P. Cecile, S.P. Gordey, and M.J. Orchard ......... 141 Stratigraphy and structure of the Driftpile stratiform Ba-Zn-Pb deposit, Gataga area, northeastern British Columbia S. Paradis, J.L. Nelson, and R. Farmer .......................... 149 Quaternary geology and terrain inventory, Eastern Cordillera NATMAP Project. Report 1: regional landslide characterization1 L.E. Jackson Jr. ....................................... 159 Quaternary geology and terrain inventory, Eastern Cordillera NATMAP Project. Report 2: surficial geology and Quaternary stratigraphy, Pincher Creek and Brocket map areas, Alberta E.R.Leboe . 167 Quaternary