Red clay - Sekinendo (English spelling)
Extremely pelagic red or brown sediments, concentrated in the ocean at great depths and great distances from land. The clay content is similar to that of blue mud and globigerina ooze and is probably of terrestrial origin. Pyroclastic deposits are common, often in the form of zeolite crystals. Hard nodules of manganese, iron oxides and meteoric material are present. Carbonates range from 0-30% [Murray & Renard: 1891, Pettijohn: 1949].Red claySource: Asakura Publishing Dictionary of Petrology Information |
赤色または褐色の極端に外洋性の堆積物で，非常に深く，陸地からかなり離れた海に濃集しているもの．粘土成分は青色泥およびグロビゲリナ軟泥（globigerina ooze）と同じで，おそらく陸地起源のものである．火山砕屑物が普通でゼオライト結晶となっている．マンガン，酸化鉄，隕石物質などの硬い塊が含まれる．炭酸塩類は0～30％の範囲で含まれている［Murray & Renard : 1891, Pettijohn : 1949］．赤粘土出典 朝倉書店岩石学辞典について 情報 |
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