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TitleSekwi Mountain Project year 3: overview of bedrock mapping and collaborative studies in central Mackenzie Mountains, NT
AuthorMartel, E; Gordey, S; Roots, C; Fallas, K; MacNaughton, R; Fischer, B
Source36th Yellowknife Geoscience Forum, abstracts of talks and posters; by Jackson, V; Irwin, D; Northwest Territories Geoscience Office, Yellowknife Geoscience Forum Abstracts Volume vol. 2008, 2008 p. 42-43
Alt SeriesEarth Sciences Sector, Contribution Series 20080744
Meeting36th Annual Yellowknife Geoscience Forum; Yellowknife; CA; November 18-20, 2008
ProvinceNorthwest Territories
NTS95M; 105P; 106A
AreaMackenzie Mountains; Sekwi Mountain
Lat/Long WENS-130.0000 -126.0000 65.0000 63.0000
Subjectsstratigraphy; structural geology; bedrock geology; structural features; lithofacies mapping; Windermere Supergroup; Backbone Ranges Formation; Mackenzie Mountain Supergroup; Earn Group; Selwyn Basin; Coates Lake Group; Plateau Thrust
LinksOnline - En ligne
AbstractThe Sekwi Mountain project, initiated by the Northwest Territories Geoscience Office, is a 3-year multidisciplinary study of the central Mackenzie Mountains and is being conducted in collaboration with the Geological Survey of Canada, University of British Columbia, Laurentian University and University of Waterloo students and researchers, as well as industry partners (Eagle Plains Resources Ltd. and Freeport McMoRan Copper and Gold Inc.). The project is aimed at providing an up-to-date understanding of the stratigraphy, tectonic history, metallogeny, geochronology, and geochemistry of Proterozoic and Paleozoic strata exposed in NTS map sheets 105P, 106A, and 95M. This presentation will provide an overview of the Sekwi Mountain Project bedrock mapping, collaborative studies, and 5 graduate and undergraduate theses.

The highlights of 3 year of regional mapping include: 1) an improved understanding of the stratigraphy of the Windermere Supergroup and Backbone Ranges Formation; 2) increased resolution of Mackenzie Mountain Supergroup stratigraphic thicknesses distribution; 3) Formalization of the Little Dal Group formations; 4) subdivision of Earn Group equivalents in the Selwyn Basin; 5) distribution of the Coates Lake Group, and; 6) presence of new mineral occurrences.

Detailed studies in concert with regional mapping include the investigation of: 1) map-scale deformation in the footwall of the Plateau Thrust; 2) potential hydrocarbon source and reservoir rocks; 3) stratigraphy of Cretaceous coal-bearing strata, Imperial Formation, Whittaker Formation, Katherine Formation, and Little Dal Group; 4) structural and stratigraphic controls of carbonate hosted Zn-Pb showings; 5) geochemistry of volcanic rocks and associated diatremes; and 6) examination of newly discovered mineral prospects.

Of possible economic interest, we encountered new occurrence of: 1) vein-hosted green beryl in the Twitya Formation; 2) Cu in the Coppercap, Redstone River, Little Dal and Twitya formations; 3) carbonate-hosted Zn-Pb. The structural and stratigraphic controls on some prospects are being investigated as M.Sc. and B.Sc. research projects. Several diatremes in, and west of, NTS 106A (including the Mountain diatreme), are being studied as part of a M.Sc. study.