李朋,胡正祥,宗维,周峰,杜小锋,吴龙

• 1:湖北省地质调查院

摘要(Abstract)：

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。

关键词(KeyWords)： 岩石地层;地球化学特征;硅质岩;成因;孤峰组;二叠系;恩施;湖北

Abstract:

Keywords:

基金项目(Foundation): 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)

作者(Author): 李朋,胡正祥,宗维,周峰,杜小锋,吴龙

DOI: 10.19839/j.cnki.dcxzz.2017.03.013

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