| 新疆西昆仑库地复理石源区性质及构造背景分析 |
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| 引用本文： | 方爱民,周辉,等.新疆西昆仑库地复理石源区性质及构造背景分析[J].岩石学报,2003,19(1):153-166. |
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| 作者姓名： | 方爱民 周辉 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所岩石圈构造演化开放实验室,北京,100029
2. 北京大学,北京,100081 |
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| 基金项目： | 中国科学院知识创新项目(编号:KZCX2-SW-119-3)，国家“九五”重点科技攻关305项目(编号:95-06-03)资助 |
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| 摘 要： | 出露于库地北一些克沟中的复理石作为西昆仑库地蛇绿岩的基本组成单元之一，其本身具有重要的大地构造位置，但长期以来，有关其形成的构造环境分析却尚属空间。笔者等在对该套复理石沉积序列详细分析的基础上，本文从沉积大地构造学的角度，利用岩石矿物，主量元素，微量元素及稀土元素等地球化学数据对其母源区性质及构造背景进行了一系列分析判别，确定其形成的构造环境为大洋岛弧的弧前盆地。
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| 关 键 词： | 复理石 新疆 母岩源区 构造环境 弧前盆地 蛇绿岩 沉积序列 大地构造学 地球化学数据 |
| 文章编号： | 1000-0569/2003/019(01)-0153-66 |
| 修稿时间： | 2002年6月28日 |
Tectonic setting and provenance of the Kudi flysch in west Kunlun mountains, Xingjiang province. |
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| FANG AiMin,LI JiLiang,HOU QuanLin,LIU XiaoHan,XIAO Wenjiao,YU Liangjun and ZHOU Hui . Lab of Lithosphere Tectonic Evolution.Tectonic setting and provenance of the Kudi flysch in west Kunlun mountains, Xingjiang province.[J].Acta Petrologica Sinica,2003,19(1):153-166. |
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| Authors: | FANG AiMin LI JiLiang HOU QuanLin LIU XiaoHan XIAO Wenjiao YU Liangjun and ZHOU Hui Lab of Lithosphere Tectonic Evolution |
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| Institution: | FANG AiMin,LI JiLiang,HOU QuanLin,LIU XiaoHan,XIAO Wenjiao,YU Liangjun and ZHOU Hui . Lab of Lithosphere Tectonic Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,Chin,Peking University,Beijing,China |
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| Abstract: | A set of deep-sea turbidite outcropped in Yexikegou of northwestern Kudi, west Kunlun Mountains has been studied in detail through petrologic and geochemical methods to determine its source rock types and tectonic settings. This flysch has been considered one important component of Kudi ophiolite zone, which is one of the five suture zones found in Tibet Plateau, the northernmost border of the Gandwana plate. So far, the source rock types and tectonic settings of this flysch set have not been studied in detail, which give rise to a lot of different opinions about its origin and evolution history. In this paper, we use geochemical data from FXR and ICP-MS analysis as well as statistic petrological data from sedimentary rock samples collected in Yixiekegou to discuss its source rock features and tectonic settings. Through different methods and discriminant diagrams, we got similar result. This flysch set should be formed in a fore-island-arc basin tectonic environment |
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| Keywords: | West Kunlun Kudi ophiolite zone Flysch Provenance Tectonic settings Fore-arc basin |
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