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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Keuper marl ： ウィキペディア英語版 Keuper marl Keuper marl is an obsolete name for multiple layers of mudstone and siltstone of Triassic age which occur beneath parts of the English Midlands and neighbouring areas e.g. Cheshire,〔 Nottinghamshire,〔 Devon, eastern Worcestershire and northern Yorkshire. Typically red, or occasionally green or grey, these strata are generally featureless and contain few fossils. In basin formations, thick halite-bearing layers, or rock salt deposits, are sometimes present at the base of the marl. In modern nomenclature, Keuper marl is included within the Mercia Mudstone Group.〔(British Geological Survey: Lexicon of Named Rock Units: Mercia Mudstone Group ) (accessed 10 April 2010)〕〔(Benton M, Cook E, Turner P. ''Permian and Triassic Red Beds and the Penarth Group of Great Britain'', pp. 11, 19. ''Geological Conservation Review Series'', No. 24 (Joint Nature Conservation Committee; 2002) (ISBN 1 86107 493 X) )〕 ==References== 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「Keuper marl」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.