GEOSCAN Search Results: Fastlink


TitleUpdates to the Cambrian basin of the northern Northwest Territories
AuthorMacLean, B C
SourceGeological Survey of Canada, Current Research (Online) no. 2011-10, 2011, 12 pages,
PublisherNatural Resources Canada
Mediaon-line; digital
File formatpdf (Adobe Acrobat Reader)
ProvinceNorthwest Territories
NTS95J; 95K; 95N; 95O; 96B; 96C; 96D; 96E; 96F; 96G; 96J; 96K; 96L; 96M; 96N; 96O; 97B; 97C; 106H; 106I; 106J; 106K; 106N; 106O; 106P; 107A; 107D
AreaGreat Bear Lake; Mackenzie River
Lat/Long WENS-133.0000 -122.0000 70.0000 63.0000
Subjectstectonics; structural geology; stratigraphy; basins; basin analyses; basin formation; structural basins; grabens; deformation; rifting; structural features; faults; faults, normal; tectonic elements; tectonic interpretations; tectonic evolution; Cambrian basin; Mount Cap Formation; Saline River Formation; Mackenzie Trough; Paleozoic; Cambrian
Illustrationslocation maps; stratigraphic columns; cross-sections
ProgramMackenzie Delta and Corridor, GEM: Geo-mapping for Energy and Minerals
Released2011 07 13
AbstractA remapping of the subsurface of the mainland Northwest Territories is nearing completion with an Open File in preparation. One of the new maps provides additional detail to our understanding of a portion of the Cambrian basin and reveals the presence of a central graben system at its core. Rifting of Mackenzie Trough was preceded by uplift and occurred in two phases. The first, during deposition of the Mount Cap Formation, was most active in the south during Glossopleura time; the second, after a short hiatus, was during deposition of the Saline River Formation. The Good Hope depocentre is more complex than previously mapped and deepens southwestward into north Mackenzie Trough which, in turn, deepens southward into south Mackenzie Trough. A major Laramide thrust fault is revealed by seismic data to be an inverted Cambrian normal fault.