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Smoky Group
The Smoky Group is a stratigraphical unit of Late Cretaceous age in the Western Canadian Sedimentary Basin.
It takes the name from the Smoky River, and was first described in outcrops along the banks of the Smoky River, Spirit River and Pouce Coupe Rivers by George Mercer Dawson in 1881.〔Dawson, G.M., 1881. Report on the exploration from Port Simpson on the Pacific Coast to Edmonton on the North Saskatchewan River, Embracing a portion of the northern part of British Columbia and the Peace River Country, with Maps 150 and 152; Geological Survey of Canada, Report of Progress 1879-1880, Part B, p. 1-77.〕
==Lithology==
The Smoky Group is represented by marine silty shale with ironstone and bentonite streaks. Sandstone occurs at the base, and is transitional to the Dunvegan Formation.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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