New publications: Geoscience Map 2011-5, GeoFile 2011-12

Staffing Update: New Chief Geologist

Geoscience Map 2011-5: Geology, Geochronology, Lithogeochemistry and Metamorphism of theNimpkish-Telegraph Cove Area, Northern Vancouver Island (NTS 092L/07 and part of 092L/10) 1:50000 scale

G.T. Nixon, M.C. Kelman, J.P. Larocque, D.B. Stevenson, L.A. Stokes, A. Pals, J. Styan, K.A. Johnston, R.M. Friedman, J.K. Mortensen, M.J. Orchard and C.A. McRoberts

Geoscience Map 2011-5 (1:50 000-scale) is the final map in a series of five new geological maps (Geoscience Maps 2011-1 to 2011-5) of northern Vancouver Island which together provide a revised Early Mesozoic stratigraphic framework and Mesozoic-Tertiary plutonic history for southern Wrangellia. Geoscience Map 2011-5 describes the geology, geochronology, lithogeochemistry and metamorphism of the Nimpkish – Telegraph Cove area (NTS 092L/07 and part of 92L/10). The map area is underlain by a folded and faulted sequence of Late Triassic volcanic and sedimentary rocks of the Vancouver and Bonanza groups intruded by granitoids of the Early to Middle Jurassic Island Plutonic Suite. The deformed Triassic rocks are unconformably overlain by Upper Cretaceous marine clastics (Nanaimo Group equivalents) and intruded by rare Tertiary dykes. The Late Triassic Quatsino limestone thins radically from west to east across the map area, reaching a maximum thickness of ~800 m between Nimpkish and Bonanza lakes and a minimum thickness of <250 m in coastal exposures west of Beaver Cove. Small base-metal skarn occurrences are concentrated between Bonanza and Nimpkish lakes where the limestone is thickest near contacts with Early-Middle Jurassic granitoid intrusions of the Island Plutonic Suite (e.g. northern margins of the Noomas Creek Pluton and Nimpkish Batholith west of Bonanza Lake). The underlying Karmutsen Formation has a minimum estimated thickness of ~6 km and comprises a basal submarine pillowed basalt unit (>3 km), a middle hyaloclastite unit (~1.5 km) and an upper subaerial flow unit (>1.5 km). This stratigraphy is well-exposed in oblique section along the east coast of the island between Telegraph Cove and Robson Bight. Younger augite-plagioclase-phyric volcanic sequences in the area are assigned to the Late Triassic Parson Bay Formation; Early to Middle Jurassic volcanic stratigraphy equivalent to the Le Mare Lake and Holberg volcanic units to the west and north, respectively, are entirely lacking. Major structures in the area include steeply dipping, northerly and northwesterly-trending faults (e.g. Huston Lake, Nimpkish and Bonanza Lake faults), and an intersecting set of northeasterly-oriented structures in the northernmost part of the map area. A major north-northwesterly-trending synclinal axis delineated by strata of the Parson Bay and Quatsino formations passes through the crest of the Hankin Range and extends northwards to the Beaver Cove Fault. Regional metamorphism is generally characterized by very low-grade mineral assemblages (prehnite-pumpellyite to zeolite facies) except in the vicinity of faults and intrusive contacts where the rocks may reach upper greenschist to amphibolite grade, respectively.

GeoFile 2011-12: Surficial Geochemistry of the Galaxy Porphyry Copper-Gold Deposit, Kamloops, BC (NTS 092I/09)

R.E. Lett

In a preliminary report of a geochemical orientation survey carried out in 1992 over the Galaxy Cu-Au deposit (MINFILE 092INE007) southwest of Kamloops, BC, Kerr, Sibbick and Getchell, 1993 describe the geology, sampling and analytical methods. A map shows the distribution of Cu in the surficial deposits (till). No other elements were reported in their Geological Fieldwork paper (BCGS Paper 1993-1, pages 439-442). This GeoFile reports digital data for 47 elements, location coordinates for 169 sample sites on a grid extending 1500 metres southeast of the deposit and field notes in digital records.

Staffing Update

Steve Rowins is the new Chief Geologist and Executive Director of the BC Geological Survey. Steve will lead the Geological Survey in its mandate to attract investment in the mineral resources of BC by undertaking applied geoscience projects and developing and maintaining world class geoscience databases.

Steve obtained his undergraduate geology degree from Queen’s University, followed by a M.Sc. from the University of Ottawa and a Ph.D. from the University of Western Australia in 1994. Returning to Canada, he undertook a NSERC Post-Doctoral Fellowship at McGill University followed by several years exploring the Americas as a Project Geologist with Westmin Resources and Boliden Ltd. In 1999, Steve joined the Department of Earth & Ocean Sciences at UBC as an Assistant Professor of Economic Geology where he remained until 2006, then he returned to industry as the Vice-President of Exploration with Northern Abitibi Mining Corp. In 2009, he joined the British Columbia Geological Survey, as the Director of Cordilleran Geoscience. Steve is also an Adjunct Professor in the School of Earth & Ocean Sciences at the University of Victoria and his research interests continue to be investigating the key physicochemical processes that control the ultimate grade and tonnage of magmatic-hydrothermal ore systems. An active volunteer in the Earth Sciences community, Steve is the current President of the Geological Association of Canada (GAC) and also serves as an Associate Editor of Ore Geology Reviews.

Steve’s Contact Information:

Phone: 250-952-0454



Most provincial geoscience data can be easily accessed over the internet in map format at: and through various thematic pages at

Printed BC Geological Survey geoscience publications are available from Crown Publications Inc.

Tel: 250-387-6409 Fax: 250-387-1120

Email: Website:

Questions or to update your contact info please contact the BC Geological Survey:

Email: Tel: 250-952-0372 Fax: 250-952-0381

BC Geological Survey

British Columbia Ministry of Energy and Mines

Mines and Mineral Resources Division

Release Notification 2011-17

December 15, 2011