Geological and geochemical data from Mackenzie Corridor. Part III: New data on lithofacies, micropaleontology, lithogeochemistry, and Rock-EvalTM pyrolysis from the Devonian Horn River Group in the Mackenzie Plain and Norman Range, Northwest Territories

Kabanov, Pavel; Gouwy, Sofie; Lawrence, Paul; Weleschuk, D J; Chan, W C

doi:10.4095/297832

Cited by 2 publications

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“…Another school of thought favoring a conformable contact between the Canol and underlying formations and promoting recognition of the HRG to the north of 63° (Williams 1983;Pugh 1983) has gained ground with increasing awareness of conformable contacts and partial facies transitions between the Ramparts and the lower Canol formations (Muir and Dixon 1985;Muir 1988). Moreover, available data on conodont distribution do not support the concept of a pre-Canol hiatus (Kabanov et al 2016a).…”

Section: Stratigraphic Nomenclaturementioning

confidence: 96%

“…1). Illustrated descriptions of cored and outcrop sections are available in Kabanov (2015) and Kabanov et al (2016a).…”

Section: Measured Sectionsmentioning

confidence: 99%

“…The complete description of Rock-Eval 6 method is available in Behar et al (2001). Geochemical and pyrolysis data from Little Bear N-09 and Loon Creek O-06 wells, along with more detailed method reviews, are available in (Kabanov et al 2015(Kabanov et al , 2016a.…”

Section: Lithogeochemistry and Pyrolysismentioning

confidence: 99%

“…The Givetian -Frasnian Horn River Group (HRG) located in the Mackenzie Corridor (Fig. 1) is dominated by shales with important black shale units that locally exceed 200 m in thickness (Pyle and Gal, 2016;Kabanov et al 2016aKabanov et al , 2016b. These black shales host major hydrocarbon resources of the Northwest Territories occurring within and locally D r a f t beyond the oil window (Hamblin 2006;Hayes 2011;Pyle et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…The ongoing Mackenzie Project of the GEM-2 Program includes the study of the Devonian stratigraphic framework. Data from exploration wells drilled in 2012-2013, along with revision of older materials, are leading to new insights into lithostratigraphy including visual, well log, lithogeochemical, and organic-matter characterization, as well as updates in their biostratigraphy (Kabanov 2015;Kabanov et al 2015;Kabanov et al 2016a). This paper describes preexisting and newly proposed subdivisions of the HRG with the goal of improving the practical stratigraphic resolution for hydrocarbon exploration and academic studies.…”

Section: Introductionmentioning

confidence: 99%

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The 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

Kabanov

Gouwy

2017

Can. J. Earth Sci.

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This study proposes six new lithostratigraphic units and redefines two others within the Horn River Group (HRG), a shale-dominated succession recently prospected for shale hydrocarbons. Its lower Hare Indian Formation rests on a drowning unconformity. In the SOB area (the area between Norman Wells and the Keele tectonic zone), this formation consists of the Bluefish black shale, Francis Creek grey shale, and Prohibition Creek black shale members. The latter two are lateral equivalents of the grey shale Bell Creek Member (updated definition) in the northern part of the study area. The overlying Canol Formation in the SOB area is divided into the Vermillion Creek and Dodo Canyon members. The Prohibition – Dodo Canyon package is ≥100 m thick and composed of brittle siliceous mudrocks with median SiO2 68%–79%, Al2O3 6%–9%, varying amount of calcite and dolomite, and type I–II kerogen with median TOC 4.5%. The thin Canol Formation blanketing Kee Scarp carbonate banks is identified as its Dodo Canyon Member. The latter is a “sweet bed” for fracking with median SiO2 75%–79%, TOC 5.1%, and trace-metal signatures indicating strongest anoxia in the section. The Mirror Lake Member in the base of the overlying Imperial Formation consists of soft illite-rich grey shales with minor siderite and dolomite. The overlying Loon Creek Member is composed of Canol-like black shale facies in its basal part and less organic-rich, lighter-colored shales and siltstones above. The Loon Creek Member is partly coeval with an overlying succession of sandstones and siltstones of the Canyon Member in its updated definition. Conodont data do not indicate significant time gaps between lithostratigraphic units. The majority of standard conodont zones from the uppermost Eifelian (ensensis Zone) up to the middle Frasnian (punctata Zone) are recognized. Assemblages of the hemiansatus and semialternans/latifossatus zones are missing probably owing to scarcity of conodont samples. The base of the HRG approximates the Eifelian–Givetian boundary, and the Hare Indian Formation is mostly Givetian. The Vermillion Creek Member spans the Givetian–Frasnian boundary. In places where thick Kee Scarp carbonates aggrade on thick sections of the Bell Creek Member, the Kee Scarp – Canol contact is found within the transitans Zone and the Middle Frasnian punctata Zone conodont assemblage is found in the basal part of the Dodo Canyon Member. The main part of the Dodo Canyon Member and basal beds of the Imperial Formation remain undated.

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Section: Stratigraphic Nomenclaturementioning

confidence: 96%

“…1). Illustrated descriptions of cored and outcrop sections are available in Kabanov (2015) and Kabanov et al (2016a).…”

Section: Measured Sectionsmentioning

confidence: 99%

Section: Lithogeochemistry and Pyrolysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The 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

Kabanov

Gouwy

2017

Can. J. Earth Sci.

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The type section of the Canol Formation (Devonian black shale) at Powell Creek: Critical assessment and correlation in the northern Cordillera, NWT, Canada

Kabanov

Gouwy

2020

Bulletin of Canadian Petroleum Geology

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The Canol Formation is only 24.5 m thick at its historic type section at Powell Creek, northern Mackenzie Mountains, whereas in the off-bank sections of the Mackenzie Plain subsurface, where it is considered a high-quality shale hydrocarbon prospect, it thickens to 60–120 m. This paper reviews available lithological and conodont biostratigraphic information from the type section, discusses choices of contacts and subdivisions, and explores the limits of regional correlation using gamma spectrometry proxies. We position the base of the Canol Formation at the top of the lower resistant unit of the “allochthonous limestone beds”, the thick off-reef debris package present in this outcrop but absent in other well-known Canol sections. The base of the formation can be of a latest Givetian age as suggested by the norrisi zone conodont fauna from the “allochthonous limestone”. The top of the Canol Formation is placed at the base of a distinct, 2.1 m thick horizon with concretionary carbonate beds within the thick shale transition between the Canol and the Imperial formations. Limestone nodules from this horizon produced a conodont fauna that can occur in the jamieae to Upper rhenana zones (Frasnian zones 11–12) thereby suggesting a middle to earliest Late Frasnian age for the Canol top. The cross-section tying several outcrop and well sections across the regional facies zonation reveals that the Dodo Canyon Member, a unit erected in thick off-bank Canol sections, is traceable at Powell Creek. In this correlation, the Vermillion Creek Member, which is the lower portion of the Canol Formation in thick off-bank sections, finds its counterpart in the allochthonous limestone beds sensu MacKenzie (1970). This cross-section is the first correlation of the Canol stratotype at member level available in published sources. Thinness of the Canol Formation at Powell Creek, as well as its location in the carbonate bank toe-of-slope setting, are factors impairing its reference value and calling for more representative sections to act as reference sections and constitute a composite-stratotype for the Canol Formation.

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Geological and geochemical data from Mackenzie Corridor. Part III: New data on lithofacies, micropaleontology, lithogeochemistry, and Rock-EvalTM pyrolysis from the Devonian Horn River Group in the Mackenzie Plain and Norman Range, Northwest Territories

Cited by 2 publications

References 0 publications

The 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

The 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

The type section of the Canol Formation (Devonian black shale) at Powell Creek: Critical assessment and correlation in the northern Cordillera, NWT, Canada

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