| 阿尔金山卓阿布拉克东南中晚奥陶世侵入岩地质特征及意义 |
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| 引用本文： | 任燕,曹福根,黄家涛.阿尔金山卓阿布拉克东南中晚奥陶世侵入岩地质特征及意义[J].新疆地质,2012,30(Z1):25-30. |
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| 作者姓名： | 任燕 曹福根 黄家涛 |
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| 作者单位： | 新疆维吾尔自治区地质矿产勘查开发局第一区域地质调查大队,新疆 乌鲁木齐,830011 |
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| 基金项目： | 新疆阿尔金山卓阿布拉克地区(四幅)1:5万区域地质调查项目资助 |
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| 摘 要： | 据锆石SHRIMP U-Pb测年结果(460.2±7.3)～(460.2±7.3) Ma,首次将阿尔金山卓阿布拉克东南侵入岩体形成时代定为中晚奥陶世.岩石学及地球化学特征显示为岛弧型,说明南华一奥陶纪大洋壳在中晚奥陶世曾向南俯冲,岩体属Ⅰ型花岗岩,具壳幔混合源成因特点.
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| 关 键 词： | 阿尔金山 卓阿布拉克 中酸性岩体 锆石SHRIMP U-Pb定年 中晚奥陶世 |
The Geological Characteristics and Significance of Middle-late Ordavician Eon of Southeast Zhuoabulake,Aerjin Mountians |
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| REN Yan
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CAO Fu-gen
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HUANG Jia-tao.The Geological Characteristics and Significance of Middle-late Ordavician Eon of Southeast Zhuoabulake,Aerjin Mountians[J].Xinjiang Geology,2012,30(Z1):25-30. |
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| Authors: | REN Yan CAO Fu-gen HUANG Jia-tao |
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| Institution: | (The First Geological Survey Party,Xinjiang Bureau of Geology and Mineral Exploration and Development,Urumqi,Xinjiang,830013,China) |
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| Abstract: | According to the zircon SHRIMP U-Pb dating results(460.2±7.3) Ma～(460.2±7.3) Ma,first time indicating rocks of southeast Zhuoabulake in the aerjinshan mountians an mid-late Ordovician,and Petrological and geochemical characteristics of Island arc,indicating that the Nanhua-Ordovician oceanic crust in the Middle-Late Ordovician had southward subduction.The rock is a I-type granite,Causes of the characteristics of a crust-mantle mixed source. |
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| Keywords: | Aerjin Mountian Zhuoabulake Intermediate-acid intrusive rocks Zircon SHRIMP U-Pb dating Middle-late Ordavician |
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