Eastend Formation

Eastend Formation
Eastend Formation
Stratigraphic range: Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Underlies	Frenchman Formation; Whitemud Formation
Overlies	Bearpaw Formation
Thickness	up to 30 metres (100 ft)
Lithology
Primary	Sandstone
Other	Shale
Location
Coordinates	49°30′17″N 108°50′15″W / 49.50461°N 108.83756°W
Region	WCSB
Country	Canada
Type section
Named for	Eastend, Saskatchewan
Named by	L.S. Russell, 1932

The Eastend Formation is a stratigraphical unit of Maastrichtian age in the Western Canadian Sedimentary Basin. It takes its name from the town of Eastend, Saskatchewan, and was first described in outcrop around the settlement by L.S. Russell in 1932.^[2] The type locality was later defined south-west of the town by W.O. Kupsch in 1956.^[3]

Lithology

The Eastend Formation is composed lithic sandstone with volcanic grains, concretionary layers and green-grey shale beds. ^[1] Coal beds are found in southern Alberta.

Distribution

The Eastend Formation reaches a thickness of 30 metres (100 ft) near the town of Eastend.^[1] It is eroded to the north and east, where the Frenchman Formation lies directly over the Bearpaw Formation.

Relationship to other units

The Eastend Formation is conformably overlain by the Whitemud Formation and gradually overlies the Bearpaw Formation.^[1] In the Frenchman River valley, the Eastend Formation is erosionally overlain by the Frenchman Formation.

It is equivalent to St. Mary River Formation and Horseshoe Canyon Formation in southern Alberta, as well as the Fox Hills Formation in Montana and North Dakota.

References

^ ^a ^b ^c ^d Lexicon of Canadian Geologic Units. "Formation". Retrieved 2010-01-01.
^ Russell, L.S., 1932. The Cretaceous-Tertiary transition of Alberta. Trans. Royal Society of Canada, Ser 3, v. 26, s. 4, p. 121-156.
^ Kupsch, W.O., 1956. Frenchman Formation of eastern Cypress Hills, Saskatchewan, Canada. Geological Society of America Bull. v. 6a, p. 413-420.

[lexicon-1] Lexicon of Canadian Geologic Units. "Formation". Retrieved 2010-01-01.

[2] Russell, L.S., 1932. The Cretaceous-Tertiary transition of Alberta. Trans. Royal Society of Canada, Ser 3, v. 26, s. 4, p. 121-156.

[3] Kupsch, W.O., 1956. Frenchman Formation of eastern Cypress Hills, Saskatchewan, Canada. Geological Society of America Bull. v. 6a, p. 413-420.

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v t e Western Canada 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