| Crowfoot Formation | |
|---|---|
| Stratigraphic range: Frasnian PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Geological formation |
| Underlies | Stettler Formation |
| Overlies | Southesk Formation |
| Thickness | up to 38 metres (120 ft) |
| Lithology | |
| Primary | Anhydrite, dolomite |
| Other | Shale |
| Location | |
| Coordinates | 50°44′53″N 112°35′13″W / 50.748°N 112.587°W / 50.748; -112.587 (Crowfoot Formation) |
| Region |  Alberta Western Canadian Sedimentary Basin |
| Country |  Canada |
| Type section | |
| Named for | Crowfoot Creek |
| Named by | H.R. Belyea and D.J. McLaren, 1957 |
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.
Lithology
The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale.
Distribution
The Crowfoot Formation is typically 4 metres (10 ft) thick, but can reach up to 38 metres (120 ft).
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
- ^ Lexicon of Canadian Geologic Units. "Crowfoot Formation". Archived from the original on 2013-02-21. Retrieved 2010-01-01.
- 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.
| Western Canada Sedimentary Basin | |
|---|---|
| Hydrocarbon history | |
| Depositional regions |
|
| Southern Alberta plains |
|