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TitleNeoproterozoic-Cambrian stratigraphy of the Mackenzie Mountains, northwestern Canada, part III: measured sections from Neoproterozoic and Cambrian formations, NTS 96-D
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMacNaughton, R BORCID logo
SourceGeological Survey of Canada, Open File 8771, 2021, 39 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedNRCan photo(s) in this publication
RelatedThis publication is related to the following publications
File formatpdf
ProvinceNorthwest Territories
NTS96D/02; 96D/03; 96D/07; 96D/10; 96D/13; 96D/14; 96E/04
AreaMackenzie Mountains
Lat/Long WENS-128.0000 -126.5000 65.1333 64.2500
Subjectsregional geology; stratigraphy; paleontology; Science and Technology; Nature and Environment; Middle Cambrian; Lower Cambrian; systematic stratigraphy; stratigraphic analyses; stratigraphic nomenclature; stratigraphic correlations; lithostratigraphy; bedrock geology; lithology; sedimentary rocks; carbonates; limestones; dolomites; siltstones; shales; sandstones; dolostones; evaporites; mudstones; conglomerates; structural features; folds; anticlines; sedimentary structures; biostratigraphy; fossils; Canadian Cordillera; Neoproterozoic; Cryogenian; Tonian; Stony Anticline; Foran Anticline; MacDougal Anticline; Mackenzie Arch; Franklin Mountain Formation; Nainlin Formation; Saline River Formation; Mount Cap Formation; Mount Clark Formation; Little Dal Group; Stone Knife Formation; Dodo Creek Formation; Katherine Group; Abraham Plains Formation; McLure Formation; Eduni Formation; Tawu Formation; Grafe River Formation; Etagochile Formation; Shattered Range Formation; Phanerozoic; Paleozoic; Cambrian; Precambrian; Proterozoic
Illustrationslocation maps; stratigraphic charts; photographs; lithologic sections; schematic cross-sections
ProgramGEM2: Geo-mapping for Energy and Minerals Mackenzie Corridor
Released2021 03 10
AbstractFour previously undescribed measured sections are documented through lower and middle Cambrian (Series 2 and Miaolingian) strata of the eastern Mackenzie Mountains, Northwest Territories. These include three exposures of the Mount Clark Formation that are complete or nearly so, and a complete section through the overlying Mount Cap Formation. As in previous reports, Mount Clark Formation is dominated by quartz arenite, with variable bioturbation. Mount Cap Formation is heterolithic, dominated by dark-weathering shale and paler-coloured carbonate rocks. A section through the Neoproterozoic McClure Formation (Katherine Group) also is included, and contains abundant fine-grained siliciclastic strata with lesser sandstone and a distinctive orange-weathering carbonate. Correlations between these sections and one previously documented show the influence of late Neoproterozoic folding, reflected in erosional truncation of the McClure Formation beneath the Cambrian succession, as well as stratigraphic variations in the Cambrian units that reflect the influence of the Mackenzie Arch.
Summary(Plain Language Summary, not published)
This report documents the vertical succession of rock types found in three formations in the eastern Mackenzie Mountains of the Northwest Territories. This is based on detailed study at four sites where the formations were very well exposed. The Neoproterozoic-aged McClure Formation contains shale, sandstone, and a distinctive unit of orange dolostone. The Cambrian-aged Mount Clark Formation is dominated by quartz-rich sandstone, some of which was intensely burrowed before becoming rock. The Mount Cap Formation (also Cambrian) includes grey carbonate rocks and dark-coloured shale. Distribution of rock units reflects the influence of tectonic events during the Neoproterozoic and Cambrian.

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