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TitleDistribution of Cambrian formations in the eastern Mackenzie Mountains, Northwest Territories
AuthorFallas, K M; MacNaughton, R B
SourceGeological Survey of Canada, Current Research (Online) no. 2012-2, 2012, 16 pages,
PublisherNatural Resources Canada
Mediaon-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS96D/05; 96D/06; 96D/07; 96D/10; 96D/11; 96D/12; 96D/13; 96D/14; 96D/15; 96E/02; 96E/03; 96E/04
AreaMackenzie Mountains
Lat/Long WENS-128.0000 -126.5000 65.0833 64.2500
Subjectsstratigraphy; sedimentary rocks; sandstones; bedrock geology; Mount Clark Formation; Mackenzie Mountains Supergroup; Mount Cap Formation; Mount Kindle Formation; Franklin Mountain Formation; Saline River Formation; Little Dal Group; Katherine Group; Tsezoten Formation; Paleozoic; Cambrian; Ordovician; Proterozoic
Illustrationslocation maps; photographs; stratigraphic columns
ProgramMackenzie Delta and Corridor, GEM: Geo-mapping for Energy and Minerals
Released2012 03 27
AbstractNew bedrock mapping in the eastern Mackenzie Mountains (NTS 96 D and 96 E) has clarified the distribution of Cambrian formations northeast of the Mackenzie arch, notably by confirming the presence of the Lower Cambrian Mount Clark Formation. Mount Clark Formation is resistant weathering, dominated by quartz arenite, and commonly burrowed. It lies unconformably upon the Proterozoic Mackenzie Mountains Supergroup and is gradationally overlain by the Early Cambrian Mount Cap Formation. Numerous exposures previously mapped as Mount Cap Formation have been reassigned to Mount Clark Formation. Distinction between Mount Clark Formation and Proterozoic quartz sandstone units is aided by differences in colour and cementation, and particularly by the presence of burrows in the younger unit, a feature not present in older rocks. Mount Clark Formation is a hydrocarbon reservoir facies elsewhere in the Mackenzie Corridor. Improved understanding of its regional distribution may contribute to improved exploration success.