| 柴北缘铅石山榴辉岩地质特征 |
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| 引用本文： | 田承盛.柴北缘铅石山榴辉岩地质特征[J].青海国土经略,2001(1). |
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| 作者姓名： | 田承盛 |
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| 作者单位： | 青海省第一地质矿产勘查大队 平安 |
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| 摘 要： | 根据对铅石山榴辉岩岩石学、岩石化学、地球化学元素、变质岩相及变质作用等特征,该类岩石形成时代可能为中元古代后期,并经历了四堡期、晋宁期、加里东期三次快速折返及相应的退变质作用叠加,进一步证实了柴北缘地区高压变质带的存在。
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| 关 键 词： | 榴辉岩 高压变质带 中元古代 柴北缘 |
GEOLOGICAL CHARACTERISTICS OF QIANSHISHAN ECLOGITE IN THE NORTH MARGIN OF QAIDAM BASIN |
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| Authors: | Tian Chengsheng Qinghai No Team of Geology and Mineral exploration Pingan |
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| Institution: | Tian Chengsheng Qinghai No.1 Team of Geology and Mineral exploration,Pingan,810600 |
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| Abstract: | Based on the study of the petrology, petrochemistry, geochemistry,metamorphic facies and metamorphism, and so on, the author hold that Qianshishan eclogitewas probably formed in Later Middle Proterozoic era and subjected backtrack andretrogressive metamorphism in three times (Sibao stage, Jinning stage and Caledonianstage). It may support the view that there is a high pressure metamorphic belt in the northmargin of Qaidam Basin. |
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| Keywords: | eclogite high pressure metamorphic belt Middle Proterozoic north margin of QaidamBasin |
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