Nature
The Eastend Formation is a Maastrichtian-age unit of the Western Canadian Sedimentary Basin named for Eastend, Saskatchewan, where L.S. Russell first described its outcrops in 1932 and W.O. Kupsch later fixed its type locality in 1956. It consists mainly of lithic sandstone with volcanic grains, plus concretionary layers and green-grey shale, and near Eastend reaches about 30 metres thick; in southern Alberta it also contains coal beds. Erosion removed it to the north and east, affecting how nearby formations meet. Stratigraphically it overlies the Bearpaw Formation and is overlain by the Whitemud Formation, though in the Frenchman River valley the Frenchman Formation rests on it erosionally. It corresponds to several equivalent formations in Alberta, Montana, and North Dakota.
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Saskatchewan · Canada