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TitleCordilleran Foreland Tectono-Sedimentary Element, Canadian northern Interior Plains
AuthorFallas, K MORCID logo; Dixon, JORCID logo; Hannigan, P KORCID logo; MacLean, B C; MacNaughton, R BORCID logo
SourceSedimentary successions of the Arctic region and their hydrocarbon prospectivity; by Drachev, S S (ed.); Brekke, H (ed.); Henriksen, E (ed.); Moore, T (ed.); Geological Society Memoir 57, 2021 p. 1-11, Open Access logo Open Access
Alt SeriesEarth Sciences Sector, Contribution Series 20160131
PublisherGeological Society of London
Mediapaper; on-line; digital
File formatpdf; html
ProvinceNorthwest Territories; Yukon
NTS85M; 86D; 86E; 86L; 86M; 87B; 87C; 95M; 95N; 95O; 95P; 96; 97A; 97B; 97C; 97D; 97E; 97F; 105M; 105N; 105O; 105P; 106; 107
AreaMackenzie River; Great Bear Lake; Tulita; Norman Wells; Franklin Mountains; Inuvik; Amundsen Gulf
Lat/Long WENS-136.0000 -118.0000 71.0000 63.0000
Subjectstectonics; stratigraphy; fossil fuels; geophysics; Nature and Environment; Science and Technology; Paleogene; Paleocene; Upper Jurassic; depositional history; tectonic setting; tectonic history; plate margins; orogenies; deformation; magmatism; thermal history; depositional environment; petroleum resources; hydrocarbon potential; hydrocarbons; gas; oil; thermal maturation; reservoirs; bedrock geology; lithology; sedimentary rocks; shales; sandstones; geophysical surveys; seismic surveys; seismic reflection surveys; field relations; lithostratigraphy; Cordilleran Foreland Tectono-Sedimentary Element; Canadian Cordillera; Interior Plains; Mackenzie Plain; Little Bear Formation; Stewart D-57 Well; Mackay B-45 Well; Peel Plain; Peel Plateau; Anderson Plain; Great Bear Plain; outcrops; Phanerozoic; Cenozoic; Tertiary; Mesozoic; Cretaceous; Jurassic; Paleozoic; Precambrian
Illustrationsgeoscientific sketch maps; location maps; stratigraphic charts; cross-sections
ProgramGEM2: Geo-mapping for Energy and Minerals Mackenzie Corridor, Shield to Selwyn
Released2021 04 26
AbstractUpper Jurassic-Paleocene siliciclastic strata comprise the Cordilleran Foreland Tectono-Sedimentary Element of Canada's northern Interior Plains. These strata record four major packages deposited on top of Paleozoic shelf strata on the NW margin of the Canadian craton. These packages are a Jurassic interval interpreted to record deposition associated with extension at the Arctic Ocean margin, a Lower Cretaceous, dominantly marine, interval deposited on the flexural margin of the foreland basin, and two Upper Cretaceous intervals of west-to-east progradational marine and non-marine strata deposited on the orogenic margin. The full succession has been affected by Cordilleran deformation within the Mackenzie Plain, Franklin Mountains and Colville Hills. Organic-rich shale is documented from Lower and Upper Cretaceous successions but these strata only reach thermal maturity in deeper parts of the basin, close to the Canadian Cordillera. Potential reservoirs exist within sandstone-dominated intervals throughout the succession, although some locally lack a top seal. One natural gas discovery has been reported from Upper Cretaceous sandstone of the Little Bear Formation at the Stewart D-57 well in the southeastern Mackenzie Plain. Oil sourced from Upper Cretaceous shale is reported from the Mackenzie Plain East Mackay B-45 well.
Summary(Plain Language Summary, not published)
This report reviews the geological history, geological structure, and petroleum geology of Mesozoic formations on the northern mainland of the Northwest Territories. These strata were deposited in a basin that formed in front of the rising Mackenzie Mountains. The rocks have limited oil and gas potential. The report will be published as a chapter in a Memoir of the Geological Society of London dealing with Arctic sedimentary basins and their petroleum potential.

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