| 新疆东准噶尔塔克扎勒—麦钦乌拉古缝合线的确定 |
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| 引用本文： | 郭召杰,王超.新疆东准噶尔塔克扎勒—麦钦乌拉古缝合线的确定[J].矿物岩石,1993,13(1):96-102. |
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| 作者姓名： | 郭召杰 王超 |
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| 作者单位： | 北京大学地质学系，中国科学院遥感应用研究所 北京 100871，北京 100012 |
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| 摘 要： | 本文通过构造分析及岩石学、地球化学研究,证实塔克扎勒—麦钦乌拉存在一条蛇绿混杂岩带,表现为在构造变形的砂泥质基质中分布若干个洋脊型和洋岛型的蛇绿岩碎块。该带两侧地壳厚度明显不同,大陆边缘增生方向相反,该带还是一条早古生代的生物群落界线,早石炭世两侧岛弧有较大的纬度差异(20°以上)。因此,塔克扎勒—麦钦乌拉蛇绿混杂岩带是古准噶尔大洋闭合的残骸,代表了西伯利亚板块和塔里木板块碰撞的缝合线构造带。
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| 关 键 词： | 东准噶尔 蛇绿混杂岩 缝合线 板块 |
THE DETERMINATION OF TAKEZALE-MAIQINWULA FOSSIL COLLISION SUTURE IN EAST ZHUNGAER,XINJIANG |
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| Guo Zhaojie,Wang Chao.THE DETERMINATION OF TAKEZALE-MAIQINWULA FOSSIL COLLISION SUTURE IN EAST ZHUNGAER,XINJIANG[J].Journal of Mineralogy and Petrology,1993,13(1):96-102. |
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| Authors: | Guo Zhaojie Wang Chao |
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| Abstract: | On the basis of structural analyses,as well as petrological and geochemical studies,this paper recognized an ophiolite Melange distributed along Takezale-Maiqinwula Mts. in East Zhungaer. The Melange consisted of sheared argillo-arenaceous matrix and ophiolite exotic blocks which were the remnants of ocean ridge or ocean islands. Our investigation shows that there are significant differences in crust thickness,direction of continental accretions,biocoenosis of Paleozoic Era, paleolatitudes in Early Carboniferous Period between north and south sides of the Melange. The Melange may represent a fossil collision suture between Talimu Plate and Siberia Plate. |
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| Keywords: | East Zhungaer ophiolite Melange suture Siberia Plate Talimu Plate |
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