| 洋脊俯冲及其在新疆阿尔泰地区存在的可能证据 |
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| 引用本文： | 沈晓明,张海祥,马林.洋脊俯冲及其在新疆阿尔泰地区存在的可能证据[J].大地构造与成矿学,2010,34(2). |
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| 作者姓名： | 沈晓明 张海祥 马林 |
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| 作者单位： | 1. 中国科学院,广州地球化学研究所,同位素年代学与地球化学重点实验室,广东,广州,510640;中国科学院,研究生院,北京,100049
2. 中国科学院,广州地球化学研究所,同位素年代学与地球化学重点实验室,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 本文综述了洋脊俯冲的研究历史与现状,论述了与洋脊俯冲相关的各种构造运动、岩浆活动以及成矿特点。同时,系统总结了阿尔泰南缘已报道的可能与洋脊俯冲有关的证据,如埃达克岩和富铌玄武岩、玻安岩、苦橄岩、A型花岗岩、双峰式火山岩、阿拉斯加型杂岩、酸性岩墙群等特殊的岩石类型,以及可能与洋脊俯冲相关的变质变形作用,认为洋脊俯冲模式可以合理的解释阿尔泰南缘的这些岩石组合以及变质变形作用。此外,分析了晚古生代阿尔泰南缘洋脊俯冲的时空分布,阐述了洋脊俯冲对中亚造山带陆壳增生及成矿的意义。
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| 关 键 词： | 洋脊俯冲 阿尔泰 陆壳增生 成矿 |
Ridge Subduction and the Possible Evidences in Chinese Altay, Xinjiang |
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| SHEN Xiaoming,ZHANG Haixiang,MA Lin.Ridge Subduction and the Possible Evidences in Chinese Altay, Xinjiang[J].Geotectonica et Metallogenia,2010,34(2). |
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| Authors: | SHEN Xiaoming ZHANG Haixiang MA Lin |
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| Institution: | SHEN Xiaoming1,2,ZHANG Haixiang1 and MA Lin1,2(1.CAS Key Laboratory of Isotope Geochronology and Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China,2.Graduate School of Chinese Academy of Science,Beijing 1000049,China) |
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| Abstract: | Ridge subduction is a type of subduction that the spreading centre subducted into the trench and interacted with the subduction zone. Athough magma continues to be formed between the diverging plates,it will not cool sufficiently to solidify onto the trailing plate edges. Rather,magma generated will rise through the asthenospere and this may form a slab window and induce a series of special geological phenomena. Ridge subduction is obviously different from the common ocean crust subduction,it was early note... |
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| Keywords: | ridge subduction Chinese Altay continental accretion metallogenesis |
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