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。
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.
作者
吉恒召
易志强
李娇艳
文景
苏保平
赵玮森
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)
出处
《现代矿业》
CAS
2020年第6期13-17,25,共6页
Modern Mining
基金
河南省地矿局2019年度局管财政规划地质科研项目(编号:豫地矿科研〔2019〕4号)。
关键词
黑色岩系
富硒岩石
地球化学特征
成因浅析
Black rock series
Selenium rich rock
Geochemical characteristics
Cenesis analysis
