内蒙古包头市哈达门沟金矿地球物理综合方法找矿实例分析  

Analysis of prospecting case by comprehensive geophysical method in Hadamengou gold deposit in Baotou City,Inner Mongolia

作　　者：徐浩清 杨彪 王文杰 樊爽 丁卫忠[2] 孟庆鑫 XU Haoqing;YANG Biao;WANG Wenjie;FAN Shuang;DING Weizhong;MENG Qingxin(Huhhot General Survey of Natural Resources Center,China Geological Survey,Huhhot 010010,Inner Mongolia,China;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,Hebei,China;Hebei GEO University,Shijiazhuang 050000,Hebei,China)

机构地区：[1]中国地质调查局呼和浩特自然资源综合调查中心,内蒙古呼和浩特010000 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [3]河北地质大学,河北石家庄050000

出　　处：《矿产与地质》2022年第4期805-813,共9页Mineral Resources and Geology

基　　金：中国地质调查局“内蒙古哈达门沟金矿岩金普查”(编号:DD20191017);“内蒙古哈达门沟金矿南矿带金多金属资源勘查”(编号:ZD20220312)项目共同资助。

摘　　要：为提高地球物理技术方法对哈达门沟金矿次级控矿构造的识别度,排除以往单一视电阻率的多解性,在哈达门沟金矿区开展了频谱激电测深、可控源音频大地电磁测深两种物探工作方法,并结合哈达门沟金矿区以往的地质工作成果,为该矿区深部找矿提供找矿线索。通过对可控源音频大地电磁测深法(CSAMT)及频谱激电测深法(SIP)的数据处理,结合地质资料对处理结果进行了解释,确定了矿化蚀变带的“低电阻率-高频散率-高相关系数”的物性特征,初步确定了100号脉在该区域矿化蚀变带由西向东走向在逐步向南延伸,倾向由缓和南倾逐渐变陡向近直立变化,再往东有向北倾的趋势。表明两种方法结合可以有效识别矿化蚀变带。In order to improve the identification degree of secondary ore-controlling structure of Hadamengou gold deposit by geophysical techniques and eliminate the multiple solutions of single apparent resistivity in the past,two geophysical exploration methods,spectrum IP sounding and controlled source audio magnetotoluric sounding,are carried out in Hadamengou gold deposit,with the combination of the previous geological work results,the deep prospecting clues are provided for the mining area.Through the data processing of CSAMT and SIP,and the interpretation of the processing results and the geological data,the geophysical characteristics of"low resistivity-high frequency dispersion-high correlation coefficient"of the mineralization alteration zone is determined.It is preliminarily inferred that the mineralization alteration zone of the 100 vein in this area extends gradually southward from the west to east,and its trending direction changes gradually from gentle southward to steep and nearly upright,and then it has a northward trend to the east.It shows that the combination of the two methods can effectively identify the mineralization alteration zone in the study area.

关 键 词：可控源音频大地电磁测深法 频谱激电测深法 金矿脉 哈达门沟矿区 内蒙古包头市 

分 类 号：P631[天文地球—地质矿产勘探] P618.51[天文地球—地质学]