Crowfoot Formation

From Wikipedia, the free encyclopedia

Crowfoot Formation Stratigraphic range: Frasnian PreЄ Є 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)^[1]
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)Coordinates: 50°44′53″N 112°35′13″W / 50.748°N 112.587°W / 50.748; -112.587 (Crowfoot Formation)
Region	WCSB
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. ^[2]

Lithology

The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale. ^[1]

Distribution

The Crowfoot Formation is typically 4 metres (10 ft) thick, but can reach up to 38 metres (120 ft).^[1]

Relationship to other units

The Crowfoot Formation is overlain by the Stettler Formation and overlays the Southesk Formation.^[1]

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

↑ 1.0 1.1 1.2 1.3 Lexicon of Canadian Geologic Units. "Crowfoot Formation". 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.

v t e Western Canadian Sedimentary Basin

Hydrocarbon history	Oil sands and heavy oil Frontier exploration and development Natural gas liquids Natural gas

Depositional Regions	Southern Alberta Central Alberta Northwestern Alberta Plains South-central Canadian Rockies foothills North-east Plains North-central foothills Liard River Fort Nelson Northern Rocky Mountains Fort St. John Saskatchewan Western Manitoba

Southern Alberta Plains	Cypress Hills FM Porcupine Hills FM Ravenscrag FM Edmonton GRP Belly River GRP Oldman FM Foremost FM Pakowki FM Milk River FM Colorado GRP Mannville GRP Ellis GRP Swift FM Rierdon FM Sawtooth FM Rundle GRP Banff FM Exshaw FM Bakken FM Wabamun FM Crowfoot FM Nisku FM Ireton FM Leduc FM Cooking Lake FM Beaverhill Lake GRP Elk Point GRP Canadian Shield

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.