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TitleThe Devonian Horn River Group and the basal Imperial Formation of the central Mackenzie Plain, N.W.T., Canada: multiproxy stratigraphic framework of a black-shale basin
AuthorKabanov, P; Gouwy, S
SourceCanadian Journal of Earth Sciences 2016., https://doi.org/10.1139/cjes-2016-0096
Year2016
Alt SeriesEarth Sciences Sector, Contribution Series 20160092
PublisherNRC Research Press
Documentserial
Lang.English
Mediapaper; on-line; digital
File formatpdf
ProvinceNorthwest Territories
NTS96C/11; 96C/12; 96C/13; 96C/14; 96D/09; 96D/10; 96D/11; 96D/12; 96D/13; 96D/14; 96D/15; 96D/16; 96E/01; 96E/02; 96E/03; 96E/04; 96E/05; 96E/06; 96E/07; 96E/08; 96F/03; 96F/04; 96F/05; 96F/06
Lat/Long WENS-128.0000 -125.0000 65.5000 64.5000
Subjectsfossil fuels; geochemistry; geochronology; sedimentology; stratigraphy; shales; oil shales; hydrocarbons; kerogen; black shales; mudstones; conodonts; biostratigraphy; hydraulic fracturing; illite; siderite; siltstones; lithostratigraphy; petroleum; Horn River Group; Canol Formation; Hare Indian Formation; Devonian
Illustrationstables; location maps; cross-sections, stratigraphic; photographs; geochemical plots
ProgramMackenzie Corridor, Shield to Selwyn, GEM2: Geo-mapping for Energy and Minerals
AbstractThis study proposes six new and redefines two pre-existing lithostratigraphic units within the Horn River Group, a shale dominated succession resting on a drowning unconformity and recently prospected for shale hydrocarbons. In the area between Norman Wells and the Keele zone, the Hare Indian Formation consists of the Bluefish, Francis Creek, and Prohibition Creek members. The Canol Formation is subdivided into the Vermillion Creek and Dodo Canyon members. The Prohibition-Dodo Canyon package, ?100 m thick, is composed of brittle mudrocks with type I-II kerogen and median TOC 4.5%. The thin Canol Formation blanketing Kee Scarp carbonate banks is correlated to the Dodo Canyon Member. The latter is a “sweet bed” for fracking with median SiO2 75-79%, TOC 5.1%, and trace-metal signatures of strongest anoxia. The Mirror Lake Member in the Imperial base consists of illite-rich grey shales. Conodont data do not support time gaps between lithostratigraphic units and place the Canol base close to Givetian-Frasnian boundary. This contact is younging to the Lower-Middle Frasnian on top of Kee Scarp carbonate banks.
Summary(Plain Language Summary, not published)
This study proposes six new and redefines two pre-existing lithostratigraphic units within the Horn River Group, a shale dominated succession resting on a drowning unconformity and recently prospected for shale hydrocarbons. In the area between Norman Wells and Keele zone, the Hare Indian Formation consists of Bluefish, Francis Creek, and Prohibition Creek members. The Canol Formation is subdivided into the Vermillion Creek and Dodo Canyon members. The Prohibition-Dodo Canyon package is composed of brittle mudrocks with type I-II kerogen and median TOC 4.5%. The thin Canol Formation blanketing Kee Scarp carbonate banks is correlated to the Dodo Canyon Member. The latter is a ¿sweet bed¿ with median SiO2 75-79%, TOC 5.1%, and trace-metal signatures of strongest anoxia. The Mirror Lake Member in the Imperial base consists of illite-rich grey shales. Conodont data don¿t support time gaps between lithostratigraphic units and place the Canol base close to Givetian-Frasnian boundary. This contact is younging to the Lower-Middle Frasnian on top of Kee Scarp carbonate banks.
GEOSCAN ID298854