Nature
The Crowfoot Formation is a Frasnian-age stratigraphic unit in the Western Canadian Sedimentary Basin, named for Crowfoot Creek, a tributary of the Bow River. It was first identified in 1957 by H.R. Belyea and D.J. McLaren from the Royalite Crowfoot No. 2 well near the creek. Composed chiefly of anhydrite and silty dolomite with minor shale, it is usually about 4 metres thick but can reach 38 metres. In the regional sequence it lies above the Southesk Formation and below the Stettler Formation, and it corresponds to the Calmar Formation, part of the Graminia Formation, and the Torquay Formation in surrounding regions.
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