| 新疆东昆仑鸭子泉蛇绿岩的基本特征及其大地构造意义 |
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| 引用本文： | 杨金中,沈远超.新疆东昆仑鸭子泉蛇绿岩的基本特征及其大地构造意义[J].现代地质,1999,13(3):309-314. |
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| 作者姓名： | 杨金中 沈远超 |
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| 作者单位： | 中国科学院地质研究所!北京100029 |
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| 基金项目： | “九五”国家科技攻关305 项目 |
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| 摘 要： | 鸭子泉蛇绿岩位于新疆东昆仑祁漫塔格山系中部， 与阿尔金断裂平行产出， 由超基性岩、基性岩和拉斑玄武岩等组成。它侵位于早石炭世含放射虫的深海沉积物中， 可能代表了东昆仑祁漫塔格地区晚古生代的板块俯冲带。蛇绿岩可能来源于俯冲带附近的由小型扩张中心形成的次生洋壳， 之后由于消减作用， 侵位到深海沉积物中， 形成了造山带中的蛇绿岩。
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| 关 键 词： | 蛇绿岩带 造山带 俯冲带 鸭子泉 |
BASIC FEATURES AND ITS TECTONIC SIGNIFICANCE OF YAZIQUAN OPHIOLITE BELT IN EASTERN KUNLUN OROGENIC BELT, XINJIANG |
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| Yang Jinzhong\ Shen Yuanchao\ Li Guangming\ Liu Tiebing\ Zeng Qingdong.BASIC FEATURES AND ITS TECTONIC SIGNIFICANCE OF YAZIQUAN OPHIOLITE BELT IN EASTERN KUNLUN OROGENIC BELT, XINJIANG[J].Geoscience——Journal of Graduate School,China University of Geosciences,1999,13(3):309-314. |
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| Authors: | Yang Jinzhong\ Shen Yuanchao\ Li Guangming\ Liu Tiebing\ Zeng Qingdong |
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| Abstract: | Yaziquan ophiolite belt is located in the middle of Qimantage mountain in Eastern Kunlun orogenic belt, Xinjiang, adjacent to Tarim and Karakorum and parallel to Altyn fault. It is composed of weakly metamorphosed and strongly deformed basic\|ultrabasic rocks, such as olivine rock, pyroxene\|peridotite, gabbro and diabase, and intruded in the Lower Carboniferous deep\|sea sediment which contains radiolarian fossils. It came from the secondary oceanic crust formed in the small scale spreading center near the subduction zone, and is the representative of the Paleozoic subduction zone of Qimantage region in Eastern Kunlun orogenic belt, Xinjiang. |
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| Keywords: | ophiolite belt orogenic belt subduction zone Yaziquan |
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