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The Viking Formation is a stratigraphical unit of Cretaceous age in the Western Canadian Sedimentary Basin. It takes the name from the town of Viking, Alberta, and was first described in the Viking-Kinsella oil field by Dowling in 1919.〔Dowling, D.B., Slipper, S E., and McLearn, F.H., 1919. Investigations in the gas and oil fields of Alberta, Saskatchewan and Manitoba. Geological Survey of Canada, Memoir 116.〕 ==Lithology== The Viking Formation is composed of fine to coarse grained sandstone with interbeds of conglomerate and cherty conglomeratic sandstone. 〔 〕 Nodular phosphorite, coal fragments and concretionary siderite occur in the coarse beds. 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「Viking Formation」の詳細全文を読む スポンサード リンク
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