| 大别山超高压变质带表壳岩地球化学特征及启示 |
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| 引用本文： | 钱存超,路玉林,贾十军.大别山超高压变质带表壳岩地球化学特征及启示[J].安徽地质,1998(3). |
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| 作者姓名： | 钱存超 路玉林 贾十军 |
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| 作者单位： | 安徽地质调查院; |
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| 摘 要： | 大别山南部出露较多的变质表壳岩，主要由片麻岩、片岩、长英质粒状岩石、大理岩、斜长角闪岩类等组成，经历了超高压、高压变质作用。通过岩石学、岩石化学、地球化学的研究，对其形成时代、原岩建造、构造背景等作了较深入的分析，认为其成岩时代可能属于早中元古代，原岩为一套碎屑岩，碳酸盐岩夹火山岩建造，构造背景应为与大陆岛弧有关的活动大陆边缘环境。这些研究成果为探讨大别造山带的形成环境、演化、榴辉岩等超高压变质带的形成、折返机制等提供了较充分的地质依据。
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| 关 键 词： | 变质表壳岩 岩石地球化学 岛弧活动 大陆边缘 大别山 |
THE GEOCHEMICAL CHARACTERISTICS OF ULTRAHIGH PRESSURE METAMORPHIC CRUSTOSE IN THE DABIE MTS AND THE IMPLICATIONS |
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| Qian Cunchao,Lu Yulin,Jia Shijun.THE GEOCHEMICAL CHARACTERISTICS OF ULTRAHIGH PRESSURE METAMORPHIC CRUSTOSE IN THE DABIE MTS AND THE IMPLICATIONS[J].Geology of Anhui,1998(3). |
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| Authors: | Qian Cunchao Lu Yulin Jia Shijun |
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| Institution: | Anhui Academy of Geological Survey;Hefei 230001 |
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| Abstract: | The outcropped metamorphic crustoses in the southern Dabie Mts which have been subjected to ultrahigh-high pressure metamorphism consist of gneiss,schist,felsic granular rock,marble,plagioclase amphibolite,etc Their diagenesis is thought to have taken place in the early-to mid-Proterozoic time and the protoliths are a suite of detrital rocks and carbonate rocks intercalated with volcanic formation. Their tectonic setting should be the active continental margin related to continental island arc All these a... |
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| Keywords: | metamorphic crustose petrogeochemistry island arc active continental margin Dabie Mts |
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