论文部分内容阅读
泽当蛇绿岩位于雅鲁藏布江蛇绿岩带东段,对蛇绿岩中的玄武岩进行了全岩SM-ND同位素分析,得到的等时线年龄为175±20MA,初始ΕND(T)=+7.2,表明泽当蛇绿岩形成于中侏罗世,来源于强烈亏损的地幔源区,没有受到大陆地壳物质的混染。
The Zendang ophiolite is located in the eastern segment of the Yarlung Zangbo ophiolite zone. SM-ND isotope analyzes of basalts in the ophiolite show an isochron age of 175 ± 20 MA with an initial ΕND (T) of +7.2 , Indicating that the Zendang ophiolite was formed in the Middle Jurassic and originated from a strongly depleted mantle source area and was not contaminated by the continental crust material.