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机构地区:[1]中化地质矿山总局化工地质调查总院,北京100013 [2]中化地质矿山总局地质研究院,河北涿州072754
出 处:《化工矿产地质》2013年第3期136-142,共7页Geology of Chemical Minerals
摘 要:对乌石峰和德尔尼蛇绿岩玄武岩单元地球化学特征的对比分析,发现其形成环境存在某些共性又有区别。通过稀土配分图和构造环境判别图,初步认为乌石峰蛇绿岩代表的是不成熟洋壳环境,而德尔尼蛇绿岩代表的是典型的快速扩张的洋中脊环境,两蛇绿岩带同属古特提斯多岛洋构造体系,但其发育程度有一定差别。In this paper, Based on the comparative analysis of the ophiolite basalt unit geochemical characteristics in the area of Wushifeng and Deerni, the commonalities and differences of its formation environment have been found. REE diagram and tectonic setting discrimination diagrams show the Wushifeng ophiolite was on behalf of the preliminary view that the immature oceanic crust environment, Deemi ophiolite was typical rapid expansion of the mid-ocean ridge environment. Both of them belong to Paleotethyan Island oceanic systemwith differences development degree.
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