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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 Prehnite-pumpellyite facies ： ウィキペディア英語版 Prehnite-pumpellyite facies The prehnite-pumpellyite facies is a metamorphic facies typical of subseafloor alteration of the oceanic crust around mid-ocean ridge spreading centres. It is a metamorphic grade transitional between zeolite facies and greenschist facies representing a temperature range of 250 to 350 °C and a pressure range of approximately two to seven kilobars. The mineral assemblage is dependent on host composition. *In mafic rocks the assemblage is chlorite, prehnite, albite, pumpellyite and epidote. *In ultramafic rocks the assemblage is serpentine, talc, forsterite, tremolite and chlorite. *In argillaceous sedimentary rocks the assemblage is quartz, illite, albite, and stilpnomelane chlorite. *In carbonate sediments the assemblage is calcite, dolomite, quartz, clays, talc, and muscovite. ==References== * Blatt, Harvey and Robert Tracy, 1995, ''Petrology: igneous, sedimentary, and metamorphic'', Freeman, ISBN 0-7167-2438-3 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「Prehnite-pumpellyite facies」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.