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Manville Group : ウィキペディア英語版 | Mannville Group
The Mannville Group is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin. It takes the name from the town of Mannville, Alberta, and was first described in the ''Northwest Mannville 1'' well by A.W. Nauss in 1945.〔Nauss, Arthur William, 1945. Cretaceous stratigraphy of Vermilion area, Alberta, Canada; American Association of Petroleum Geologists (AAPG), AAPG Bulletin, vol. 29, no. 11 (November), pp. 1605-1629.〕 ==Lithology== The Mannville Group consists of interbedded continental sand and shale in the base, followed by a calcareous sandstone member, marine shale, glauconitic sandstone and salt and pepper sandstone. An additional non-marine sequence is present in north-eastern Alberta.
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