豫西南寒武系黑色岩系中富硒岩石地球化学特征及成因*

现代矿业 ›› 2020, Vol. 36 ›› Issue (06): 13-.

豫西南寒武系黑色岩系中富硒岩石地球化学特征及成因*

吉恒召易志强李娇艳文景苏保平赵玮森

河南省地质矿产勘查开发局第一地质勘查院

出版日期:2020-06-25 发布日期:2021-09-14

Geochemical Characteristics and Genesis of Seleniumrich Rocks in the Cambrian Black Series in Southwest Henan Province

Ji Hengzhao Yi Zhiqiang Li Jiaoyan Wen Jing Su Baoping Zhao Weisen

The First Geological Exploration Institute of Henan Geology and Mineral Exploration and Development Bureau

Online:2020-06-25 Published:2021-09-14

摘要/Abstract

摘要： 研究区位于豫陕交界的南秦岭造山带东段淅川断裂多金属成矿带上，成矿条件较好，通过在该区开展地质调查及研究工作表明：①岩石的含硒量与岩石的岩性和形成时代密切相关,与岩石的含碳量和含硫量呈正线性相关；②黑色岩系中富硒岩石形成于大陆边缘向远洋深海过渡地带的环境中，与扬子陆块北缘的区域大地构造背景相一致，系多源成因，是正常缺氧沉积和热液喷流沉积共同作用的结果。在上述分析的基础上，圈定了2处找矿靶区，找矿前景较好，值得进一步开展工作。

关键词: 黑色岩系富硒岩石地球化学特征成因浅析

Abstract: The study area is located in the Xichuan fault polymetallic metallogenic belt in the eastern part of South Qinling orogenic belt at the junction of Henan and Shaanxi,with good metallogenic conditions.Through geological investigation and research in this area,the results show that:①the selenium content of rock is closely related to the lithology and formation age of rock,and is positively linear related to the carbon content and sulfur content of rock;②the selenium rich rock in the black rock series is formed in the continental margin in the environment of the transition zone between the ocean and the deep sea,it is consistent with the regional geotectonic background of the northern margin of Yangtze Landmass，it is a multisource genesis,which is the result of the interaction of normal anoxic deposition and hydrothermal exhalation deposition.Based on the above analysis,two prospecting target areas have been delineated,with good prospecting prospects,which is worth conducting further work.

Key words: Black rock series,Selenium rich rock,Geochemical characteristics,Cenesis analysis

吉恒召易志强李娇艳文景苏保平赵玮森. 豫西南寒武系黑色岩系中富硒岩石地球化学特征及成因*[J]. 现代矿业, 2020, 36(06): 13-.

Ji Hengzhao Yi Zhiqiang Li Jiaoyan Wen Jing Su Baoping Zhao Weisen. Geochemical Characteristics and Genesis of Seleniumrich Rocks in the Cambrian Black Series in Southwest Henan Province[J]. Modern Mining, 2020, 36(06): 13-.

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