| 青藏高原蛇绿岩体系和西藏西部的蛇绿岩成因 |
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| 引用本文： | 梅厚钧,林学农,吴明堂,池家祥,张光宇.青藏高原蛇绿岩体系和西藏西部的蛇绿岩成因[J].地球化学,1981(2):107-113. |
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| 作者姓名： | 梅厚钧 林学农 吴明堂 池家祥 张光宇 |
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| 作者单位： | [1]不详 [2]西藏地质局地质技术人员 |
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| 摘 要： | Several ophiolite belts and an opbiolite assemblage have been discovered in the Ali region and the Upper Valley of Yarlung Zangbo River. As is shown by alkalisilicon and titanium.zirconium diagrams of volcanic rocks from these ophiolite belts, most of the volcanic rocks in these regions may not have been produced from ocean floor. Cretaceous volcanism in western Tibet bears strong resemblance to that of the present day Pacific Are. Based upon a review of opbiolite distribution on a worldwide scale, the authors suggest classifying the four major orogenic regions into four “ophiolite series”,i.e. the Qinghai-Tibet, the Altay, the Alpine and the Cireum-Pacific opbiolite series.Among other things, all the blocks, large and small, in the crust seems to be forced to converge respectively to the four places as a result of continental drift during the last one thousand million years.
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| 关 键 词： | 蛇绿岩 青藏高原 地质剖面 超基性岩 |
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