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| 东昆仑山木孜塔格蛇绿混杂岩中火山岩的地球化学特征及构造环境 | |
| 引用本文： | 吴峻,兰朝利,李继亮. 东昆仑山木孜塔格蛇绿混杂岩中火山岩的地球化学特征及构造环境[J]. 地质通报, 2005, 24(12): 1157-1161 |
| 作者姓名： | 吴峻 兰朝利 李继亮 |
| 作者单位： | 1. 中国地质调查局资源评价部,北京,100011 2. 石油大学石油天然气工程学院,北京,102249 3. 中国科学院地质与地球物理研究所岩石圈开放实验室,北京,100029 |
| 基金项目： | 国家“九五”科技攻关“305”项目96-915-06-03专题资助成果。 |
| 摘 要： | 木孜塔格蛇绿混杂岩沿东西走向的木孜塔格一鲸鱼湖断裂断续出露有变质橄榄岩、堆晶岩、火山岩及其上覆的硅质岩，彼此呈构造接触关系。其中，火山岩由玄武岩、玄武安山岩和安山岩构成。野外观察曾认为火山岩属于蛇绿岩的一部分．但火山岩的微量和稀土元素分析表明，其富集LREE、Cs、Ba、Th、Pb贫Nb，Ba／Nb、Ce／Pb、Cs／Rb、Ba／LaNb／Ta分别为18．59-102．82、1.42～8．13、0．10-0.49、11．76-51．79和6．22-13．58，TiO2含量1．64％-2．09％。这些特征表明该火山岩为形成于较成熟岛弧环境的火山岩而非蛇绿岩成员，也指示木孜塔格地区曾经历了与今西太平洋边缘近似的演化过程，可能形成了较成熟的沟-弧-盆体系。 |
| 关 键 词： | 东昆仑山 木孜塔格蛇绿混杂岩 火山岩 岛弧 地球化学 |
| 文章编号： | 1671-2552(2005)12-1157-05 |
| 修稿时间： | 2005-03-10 |
Geochemical characteristics and tectonic setting of volcanic rocks in the Muztag ophiolitic mé1ange, East Kunlun Mountains, Xinjiang, China |
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| WU Jun,LAN Chaoli,LI Jiliang. Department of Mineral Resources Assessment,China Geological Survey,Beijing,Chin,. School of Oil and Gas Engineering,University of Petroleum,Beijing,Chin,. Open Laboratory of Lithosphere Tectonic Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China. Geochemical characteristics and tectonic setting of volcanic rocks in the Muztag ophiolitic mé1ange, East Kunlun Mountains, Xinjiang, China[J]. Geologcal Bulletin of China, 2005, 24(12): 1157-1161 | |
| Authors: | WU Jun LAN Chaoli LI Jiliang. Department of Mineral Resources Assessment China Geological Survey Beijing Chin . School of Oil Gas Engineering University of Petroleum Beijing Chin . Open Laboratory of Lithosphere Tectonic Evolution Institute of Geology Geophysics Chinese Academy of Sciences Beijing China |
| Affiliation: | WU Jun,LAN Chaoli,LI Jiliang. Department of Mineral Resources Assessment,China Geological Survey,Beijing,Chin,. School of Oil and Gas Engineering,University of Petroleum,Beijing,Chin,. Open Laboratory of Lithosphere Tectonic Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China |
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