可控源音频大地电磁法在上宫金矿的应用  

Application of controlled source audio- frequency electromagnetic method in Shanggong gold deposit

作　　者：刘岩波[1] 周韬[1] 施强[2] 皮伟[1] 崔方智[1] 

机构地区：[1]河南省煤田地质局物探测量队,郑州450009 [2]河南省地质矿产勘查开发局第一地质矿产调查院,洛阳471023

出　　处：《矿产勘查》2015年第4期438-444,共7页Mineral Exploration

基　　金：河南省地勘基金项目(编号:30)资助

摘　　要：上宫金矿属于构造蚀变岩型金矿,成矿部位与断裂、破碎带分布密切相关。断裂附近岩体破碎并矿化后其电阻率值较围岩有明显降低,根据这一电性差异,文章以河南省上宫金矿为例,利用可控源音频大地电磁法(CSAMT)查找破碎带,并结合已知地质情况分析研究,合理布置钻孔位置,成功揭露物探推断异常,达到找矿目的。The Shanggong gold deposit is structure - controlled alteration type gold deposit. The mineralization position is closely associated with the distribution of faults and fractured zones. Based on the variation of the resistivity of the fractured and mineralized rock and the intact rock, CSAMT method is applied to detect the distribution of the fracture zone in the case study of Shanggong gold deposit. The test drillings is arranged to confirm the geophysical anomaly in consideration of geological conditions. Finally the orebody was found and the prospecting purpose is realized.

关 键 词：构造蚀变岩 断裂 可控源音频大地电磁法 

分 类 号：P618.51[天文地球—矿床学] P631.3[天文地球—地质学]