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地电化学法在豫西崤山黄土覆盖区找矿中的应用——以洛宁县石龙山预查区为例
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  • 英文篇名:The application of geo-electrochemical methods to prospecting in the loess-covered Xiaoshan Mountain,western Henan Province: A case study of the Shilongshan gold polymetallic ore prospecting area in Luoning County
  • 作者:杨笑笑 ; 罗先熔 ; 文美兰 ; 欧阳菲 ; 吕星海 ; 尹高科 ; 郑广明
  • 英文作者:YANG Xiao-Xiao;LUO Xian-Rong;WEN Mei-Lan;OU-Yang Fei;LYu Xing-Hai;YIN Gao-Ke;ZHENG Guang-Ming;College of Earth Sciences,Guilin University of Technology;The Fourth Geological Exploration Institute of Henan Geology and Mineral Bureau;
  • 关键词:黄土覆盖区 ; 地电化学法 ; 分形 ; 找矿预测 ; 豫西洛宁
  • 英文关键词:loess covered area;;geoelectric extraction method;;fractal;;prospecting forecast;;Luoning in western Henan Province
  • 中文刊名:WTYH
  • 英文刊名:Geophysical and Geochemical Exploration
  • 机构:桂林理工大学地球科学学院;河南省地质矿产勘查开发局第四地质勘查院;
  • 出版日期:2019-04-15
  • 出版单位:物探与化探
  • 年:2019
  • 期:v.43
  • 基金:国家重点研发计划项目“深部铀成矿信息识别技术研究”(2017YFC0602604HT02)、“穿透性地球化学勘查技术”(2016YFC0600603);; 广西教育厅项目(2017KY0239)
  • 语种:中文;
  • 页:WTYH201902003
  • 页数:13
  • CN:02
  • ISSN:11-1906/P
  • 分类号:25-37
摘要
豫西崤山北部沟壑纵横,第四系黄土广泛覆盖,地表植被发育。为探讨地电化学法在豫西崤山黄土覆盖区寻找金矿的有效性,选择了隐伏于黄土下的石寨沟金矿开展找矿可行性试验,并在其邻区石龙山金多金属矿预查区南部开展地电化学找矿研究。研究发现,石寨沟Au矿床上部发育地电化学综合异常,异常规律明显,元素相关性较好,具有很好的套合和分带关系。对石龙山预查区地电提取的微量元素含量特征(分形、变异系数、地电提取比)进行分析,发现其与石寨沟Au矿床具有相近的地电异常规律。进一步利用Surfer软件绘制等值线异常图,结合前人研究成果在异常套合较好的02号线45~47测点初步经过地表工程验证,确定了一条品位较好的工业金矿体,侧面证明实测、推测断层F1-1和F20确实存在。该成果为石龙山地区深部及石寨沟矿床外围找矿提供地电化学理论基础,也为崤山黄土覆盖区找矿提供了新的思路。
        Xiaoshan Mountain widely covered by the Quaternary sediments is located in the west of Henan Province. Its north part is ravines crossbar,and the surface vegetation grows fully and covers the surface heavily. In order to investigate the effectiveness of the earth electrochemical method in the search for gold deposits in the Xiaoshan loess-covered area in western Henan,the authors selected Shizhaigou gold deposit which is buried in loess to carry out the feasibility test of ore prospecting,and conduct geo-electrochemical prospecting in the south of the Shillongshan gold polymetallic mineral survey area and its adjacent area of Xiaoshan. The study revealed that the electrochemical composite anomaly in the development area of the Au deposit in Shizhaigou is obvious,the elements are well correlated and they have good nesting and zoning relationships. The authors analyzed the trace element content characteristics( fractal,coefficient of variation and extraction ratio of the geoelectric extraction) extracted from the geoelectricity of Shilongshan census area and found that it has similar geoelectricity anomaly patterns to the Shizhaigou gold deposit. In addition,the authors used Surfer software to draw the contour abnormal map and,in combination with previous research results,initially verified the surface of well-arranged 45-47 surveying points along No.02 line through surface engineering,thus determining an industrial gold orebody with good reserves. It is thus proved that the measured and inferred faults F1-1 and F20 do exist. The results provide a theoretical basis for electrochemical prospecting in the search for deep deposits in the Shilongshan area and the periphery of the Shizhaigou deposit,and also provide new ideas for the prospecting work in the loess-covered loess area.
引文
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