Crowfoot Formation
{{Infobox rockunit
| name = Crowfoot Formation
| image =
| imagesize =
| caption =
| type = Geological formation
| age = {{Fossil range|Frasnian|Frasnian|Frasnian}}
| prilithology = Anhydrite, dolomite
| otherlithology = Shale
| namedfor = Crowfoot Creek
| namedby = H.R. Belyea and D.J. McLaren, 1957
| region = {{flag|Alberta}}
Western Canadian Sedimentary Basin
| country = {{flag|Canada}}
| coordinates = {{coord|50.748|-112.587|display=inline,title|name= Crowfoot Formation}}
| unitof =
| subunits =
| underlies = Stettler Formation
| overlies = Southesk Formation
| thickness = up to {{convert|38|m|ft|-1}}
| extent =
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}}
The Crowfoot Formation is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.
It takes the name from Crowfoot Creek, a tributary of the Bow River and was first described in the Royalite Crowfoot No. 2 well, located near the creek by H.R. Belyea and D.J. McLaren in 1957. Belyea, H.R. and McLaren, D.J., 1957. Upper Devonian nomenclature in southern Alberta. Journal of the Alberta Society of Petroleum Geologists, v. S. p.166-182.
Lithology
The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale.
{{Cite web
|url=http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003592
|title=Crowfoot Formation
|author=Lexicon of Canadian Geologic Units
|accessdate=2010-01-01
|url-status=dead
|archiveurl=https://archive.today/20130221091315/http://cgkn1.cgkn.net/weblex/weblex_litho_detail_e.pl?00053:003592
|archivedate=2013-02-21
}}
Distribution
Relationship to other units
The Crowfoot Formation is overlain by the Stettler Formation and overlays the Southesk Formation.
It is equivalent to the Calmar Formation and part of the Graminia Formation in central Alberta and to the Torquay Formation in Saskatchewan, Manitoba and Montana.
References
{{reflist}}
{{Western Canadian Sedimentary Basin|South AB=yes}}