鄂西恩施地区孤峰组岩石地球化学特征及含矿性分析
发布时间：2019-04-26 10:38
【摘要】：鄂西恩施地区孤峰组普遍发育一套含骨针和放射虫的硅质岩夹炭质页岩。通过硅质岩岩石学和地球化学特征研究,综合判断中二叠统孤峰组硅质岩沉积环境为大陆边缘中下部与深水盆地结合部位,具有生物与热水混合成因特征,且向上热水参与作用增强,从而导致了矿物元素的分异。结合全岩样品分析结果,认为富矿层位为中上部炭质页岩含量较高的层位,建立了找矿标志,为本区地质找矿工作做出了重要贡献。
[Abstract]:A set of siliceous rock-carbonaceous shale containing bone needle and radiolaria is generally developed in Gufeng formation of Enshi area, western Hubei province. Based on the study of petrology and geochemistry of siliceous rocks, it is concluded that the sedimentary environment of siliceous rocks in the Gufeng formation of the Middle Permian is the combination of the middle and lower parts of the continental margin with the deep water basin, which is characterized by the mixed genesis of biological and hot water. And the participation of upward hot water is enhanced, which leads to the differentiation of mineral elements. Combined with the analysis results of the whole rock samples, it is considered that the rich ore horizon is the horizon with high content of the middle and upper carbonaceous shale, and the prospecting mark has been established, which has made an important contribution to the geological prospecting work in this area.
【作者单位】： 湖北省地质调查院;
【基金】：中国地质调查局大调查项目(12120114066101);中国地质调查局扬子工程湘西-鄂西成矿带神农架-花垣地区地质矿产调查二级项目(No.DD20160029)
【分类号】：P584;P612
[Abstract]:A set of siliceous rock-carbonaceous shale containing bone needle and radiolaria is generally developed in Gufeng formation of Enshi area, western Hubei province. Based on the study of petrology and geochemistry of siliceous rocks, it is concluded that the sedimentary environment of siliceous rocks in the Gufeng formation of the Middle Permian is the combination of the middle and lower parts of the continental margin with the deep water basin, which is characterized by the mixed genesis of biological and hot water. And the participation of upward hot water is enhanced, which leads to the differentiation of mineral elements. Combined with the analysis results of the whole rock samples, it is considered that the rich ore horizon is the horizon with high content of the middle and upper carbonaceous shale, and the prospecting mark has been established, which has made an important contribution to the geological prospecting work in this area.
【作者单位】： 湖北省地质调查院;
【基金】：中国地质调查局大调查项目(12120114066101);中国地质调查局扬子工程湘西-鄂西成矿带神农架-花垣地区地质矿产调查二级项目(No.DD20160029)
【分类号】：P584;P612
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2 王文耀;苏皖地区的孤峰组[J];地层学杂志;1988年01期
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