含铁石英岩建造的特征--《国外前寒武纪地质》1981年02期

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含铁石英岩建造的特征

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【摘要】:正 含铁石英岩仅仅是存在于前寒武纪韵律层中的一种贫铁矿。它是由地表风化或火山成因的物质中铁沉积富集而形成的,有一种观点认为含铁石英岩与浅水沉积有关,而另一种观点认为与深水(远海)沉积堆积有关。浅水沉积成因的含铁石英岩,它包括陆源的、生物成因的,甚至溶液沉积方式富集的水利论文1L,L,p4e2^Qb'E@ i

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%T#kO)C"U\Q0含铁石英岩 地质建造 前寒武纪 优地槽 克拉通 火山作用 火山成因 建造类型 元古代 岩石组合

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s{Bht[6}4ly0含铁石英岩仅仅是存在于前寒武纪韵律层中的一种贫铁矿。它是由地表风化或火山成因的物质中铁沉积富集而形成的,有一种观点认为含铁石英岩与浅水沉积有关;而另一种观点认为与深水(远海)沉积堆积有关。 浅水沉积成因的含铁石英岩,它包括陆源的、生物成因的,甚至溶液沉积方式富

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