Saskatchewan Group

Saskatchewan Group Stratigraphic range: Frasnian PreЄ Є O S D C P T J K Pg N
Type	Geological formation
Sub-units	Birdbear Formation Duperow Formation
Underlies	Three Forks Group
Overlies	Manitoba Group
Thickness	up to 350 metres (1,150 ft)^[1]
Lithology
Primary	Carbonate
Other	Evaporite
Location
Coordinates	50°21′18″N 106°54′07″W / 50.355°N 106.902°W / 50.355; -106.902 (Saskatchewan Group)Coordinates: 50°21′18″N 106°54′07″W / 50.355°N 106.902°W / 50.355; -106.902 (Saskatchewan Group)
Region	WCSB Williston Basin
Country	Canada United States
Type section
Named for	Saskatchewan
Named by	A.D Baillie, 1953

The Saskatchewan Group is a stratigraphical unit of Frasnian age in the Western Canadian Sedimentary Basin.

It takes the name from the province of Saskatchewan, and was first described in the Mobil Oil Woodley Sinclair Cantuar X-2-21 well by A.D Baillie in 1953.^[2]

Lithology

The Saskatchewan Group is composed of carbonates with thin evaporites. ^[1]

Distribution

The Saskatchewan Group reaches a maximum thickness of 350 metres (1,150 ft).^[1] It is present in the sub-surface throughout the Williston Basin.

Subdivisions

The Saskatchewan Group contains the following formations, from top to base:

Sub-unit	Age	Lithology	Max. Thickness	Reference
Birdbear Formation	Frasnian	Upper: dolomite with evaporite interbeds Lower: non-argillaceous limestone and dolomite	45 m (150 ft)	^[3]
Duperow Formation	Frasnian	limestone and dolomite, anhydrite, halite; up to 27 depositional cycles	300 m (980 ft)	^[4]

Relationship to other units

The Saskatchewan Group is conformably overlain by the Three Forks Group and conformably overlays the Manitoba Group carbonates.^[1]

It is equivalent to the upper Beaverhill Lake Formation, the Woodbend Group and the lower part of the Winterburn Group in central Alberta, and with the Jefferson Group in Montana and North Dakota.

References

1 2 3 4 Lexicon of Canadian Geologic Units. "Saskatchewan Group". Retrieved 2010-01-01.
↑ Baillie, A.D., 1953. "Devonian names and correlations of the Williston Basin area; American Association of Petroleum Geologists Bulletin, vol. 37, no. 2 (February), pp. 444-447.
↑ Lexicon of Canadian Geologic Units. "Birdbear Formation". Retrieved 2010-01-09.
↑ Lexicon of Canadian Geologic Units. "Duperow Formation". Retrieved 2010-01-09.

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

Saskatchewan	Cypress Hills FM Ravenscrag FM Frenchman FM Whitemud FM Eastend FM Bearpaw FM Judith River GRP Belly River FM Oldman FM Foremost FM Lea Park FM Pakowki FM Milk River FM Colorado GRP Viking FM Mannville GRP Pense FM Cantuar FM Success FM Vanguard FM Ellis GRP Swift FM Rierdon FM Sawtooth FM Shaunavon FM Piper FM Gravelbourg FM Gypsum Springs FM Watrous FM Big Snowy GRP Madison GRP Charles FM Poplar Ratcliffe Midale Mission Canyon FM Kisbey SS Alida Tilston Lodgepole FM Souris Valley Three Forks GRP Bakken FM Big Valley FM Torquay FM Saskatchewan GRP Birdbear FM Duperow FM Manitoba GRP Souris River FM Elk Point GRP Davson Bay FM Prairie FM Winnipegosis FM Ashern FM Interlake FM Stonewall FM Stony Mountain FM Herald FM Yeoman FM Winnipeg FM Deadwood FM Canadian Shield

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