|
The Eastend Formation is a stratigraphical unit of Maastrichtian age in the Western Canadian Sedimentary Basin. It takes the name from the town of Eastend, and was first described in outcrop around the settlement by L.S. Russell in 1932.〔Russell, L.S., 1932. The Cretaceous-Tertiary transition of Alberta. Trans. Royal Society of Canada, Ser 3, v. 26, s. 4, p. 121-156.〕 The type locality was later defined south-west of the town by W.O. Kupsch in 1956.〔Kupsch, W.O., 1956. Frenchman Formation of eastern Cypress Hills, Saskatchewan, Canada. Geological Society of America Bull. v. 6a, p. 413-420.〕 ==Lithology== The Eastend Formation is composed lithic sandstone with volcanic grains, concretionary layers and green-grey shale beds. 〔 〕 Coal beds are found in southern Alberta. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Eastend Formation」の詳細全文を読む スポンサード リンク
|