Stratigraphical unit in Canada
The Wapiti Group is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin . It has formation status in Alberta and group status in British Columbia .
It takes the name from the Wapiti River , and was first described along the banks of the lower Wapiti River and Smoky River in the Grande Prairie area by George Mercer Dawson in 1881.[ 1]
Lithology
The Wapiti Group is composed of thin-bedded to massive sandstone with occasional conglomerate and coal beds.[ 2]
Distribution
The Wapiti Formation occurs at surface as erosional remnants in north-eastern British Columbia along the Beaver River , Liard River , between the Kotaneelee River and Petitot River .[ 2] [citation needed
Relationship to other units
The Wapiti Group forms the present day erosional surface in British Columbia , and is overlain by the Scollard Formation in its eastern reaches. It conformably and gradually overlays the Kotaneelee Formation in British Columbia, and the Smoky Group in north-western Alberta .[ 2]
References
^ Dawson, G.M., 1881. Report on the exploration from Port Simpson on the Pacific Coast to Edmonton on the 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.
^ a b c
Lexicon of Canadian Geologic Units . "Wapiti Group" . Retrieved 2009-12-16 .
