| 新疆东部梧桐窝子群的大地构造背景及其地球化学论证 |
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| 引用本文： | 白云来.新疆东部梧桐窝子群的大地构造背景及其地球化学论证[J].新疆地质,1994(2). |
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| 作者姓名： | 白云来 |
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| 作者单位： | 甘肃省地质矿产局地质科学研究所 |
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| 摘 要： | 新疆东部梧桐窝子群沿康古尔断裂带呈近东西向分布。主要由细碧岩、角斑岩及火山碎屑岩组成，其中有硅质岩、灰岩及碎屑岩夹层或凸镜体。细碧岩具枕状构造，属深海拉斑系列。比值蛛网图显示其形成于板内，且经过地壳物质的混集作用。硅质岩凸镜体中含放射虫。地球化学资料表明：碎屑岩的物源比较复杂多样，显示了混杂堆积的地球化学特点。据此认为梧桐窝子群是一套混杂堆积，位于哈萨克斯坦－准噶尔古板块的俯冲带上。
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| 关 键 词： | 梧桐窝子群，大地构造，俯冲带，地球化学，比值蛛网图，混杂堆积 |
GEOTECTONIC SETTING OF WUTONGWOZI GROUP AND ITS GEOCHEMICAL PROOFS IN EASTERN XINJIANG |
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| Bai Yunlai.GEOTECTONIC SETTING OF WUTONGWOZI GROUP AND ITS GEOCHEMICAL PROOFS IN EASTERN XINJIANG[J].Xinjiang Geology,1994(2). |
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| Authors: | Bai Yunlai |
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| Abstract: | Wutongwozi Group extends near east-west along Kanggur fsult.It mainly consists of spilite,keratophyre and volcanic clastics,intercalated with siliceous rocks,limestone and clastic rocks or lens.The pillow structure shows the spilite is of abysmal theoilitic series. The diagram of ratio cobweb indicates that the spilite formed within the plate and went through the contamination of crustal materials. The lens of silicylites contain radiolaria. The geochemital data interprete the complexity of source materials of elastic rocks,indicating the melange accumulation.So the author thinks Wutongwozi Group is a sequence of melange accumulation,located at palaeo-subduction zone of Kazakstan-Junggar palaeo-plate. |
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| Keywords: | Wutongwozi Group geotectonics subduction zone geochemistry diagram of ratio cobweb melange accumulation |
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