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TitleNew multidisciplinary geological investigations in the Walmsley Lake area, southeastern Slave Province, Northwest Territories
AuthorMacLachlan, K; Relf, C; Cairns, S; Hardy, F; Davis, B
SourceGeological Survey of Canada, Current Research (Online) no. 2001-C4, 2001, 24 pages,
PublisherNatural Resources Canada
Mediapaper; on-line; digital; CD-ROM
RelatedThis publication is contained in Geological Survey of Canada; Geological Survey of Canada; (2001). Current Research 2001, winter release, Geological Survey of Canada, Current Research no. 2001
File formatpdf
ProvinceNorthwest Territories
AreaWalmsley Lake
Lat/Long WENS-110.0000 -108.0000 64.0000 63.0000
Subjectsregional geology; structural geology; surficial geology/geomorphology; tectonics; metamorphism; ice movement; crustal evolution; uranium lead dating; bedrock geology; textures; folds; foliation; deformation; granodiorites; leucogranites; monzo-granites; migmatites; granites; dykes; Slave Province; plutonism; Proterozoic; Precambrian
Illustrationssketch maps; photographs
ProgramTargeted Geoscience Initiative (TGI-1), 2000-2003
Released2001 01 01
AbstractC4 Geological mapping in the Walmsley Lake area, southeastern Slave Province,has defined relationships between metamorphism, deformation, andplutonism that suggest plutons similar to the Defeat suite in the Yellowknife domain were emplaced before or early during peak metamorphism and defor- mation (D 2 ). Younger two-mica granite units similar to the Prosperous suite in the Yellowknife domain are, at least in part, post-D 2 . Fabric S 2 is the predomi- nant fabric throughout the area, but the map pattern it defines is controlled pri- marily by northeast- and northwest-trending, upright, F 3 folds. Ice-flow studies identified three sets of striations, the early and late ones reflect ice-flow influenced by topography.