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The Liard Formation is a stratigraphical unit of Middle Triassic to Late Triassic age in the Western Canadian Sedimentary Basin. It takes the name from the Liard River, and was first described in outcrop on the southern bank of the river, near Hell Gate Rapids in the Grand Canyon of the Liard by E.D. Kindle in 1946.〔Kindle, E.D., 1946. The Middle Triassic of Liard River, British Columbia, Appendix I. In: A Middle Triassic (Anisian) fauna in Halfway, Sikanni Chief, and Tetsa valleys, northeastern British Columbia. Geological Survey of Canada, Paper 46-1, 2nd ed. 1948.〕 ==Lithology== The Liard Formation is composed of dolomitic to calcareous sandstone and siltstone with minor dolostone and bioclastic limestone. 〔 〕 the limestone becomes cherty in the south-eastern extent. 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「Liard Formation」の詳細全文を読む スポンサード リンク
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