综合物化探在招平断裂带中段金矿深部找矿的应用

招平断裂带是胶东三大金矿带之一。研究范围位于招平断裂带中段(招远城至夏甸金矿),可控源音频大地电磁测深特征呈相对低阻,视电阻率等值线同等向下弯曲,间距变大及由陡变缓部位为成矿有利部位;构造叠加晕研究是采用相关分析及格式法,确定大尹格庄和夏甸金矿床元素轴向分带序列,前缘晕元素为As、Sb、Hg、B,近矿晕元素为Au、Ag、Cu、Pb、Zn和尾晕为Bi、Mo、Mn、Co。据前、尾晕共存准则和前缘晕强度趋势准则预测深部还有盲矿存在。通过地质及物化探工作成果,建立了地质-物探-化探综合找矿模型,确定深部找矿靶区,为下一步的找矿工作指明方向。

Application of comprehensive geophysical and geochemical exploration in deep gold exploration in the middle of Zhaoping fault zone,Shandong Province

Zhaoping fault zone is one of the three major gold belts in Jiaodong, and its deep part has great prospecting potential. The research scope is located in the middle part of Zhaoping fault zone (zhaoyuan-Xiadian gold mine). The controlled source audio frequency magnetotelluric sounding features relatively low resistivity, the apparent resistivity isoline is equally downward curved, and the position with larger spacing and from steep to slow is the favorable position for mineralization. The study of structural superimposed halo is to determine the axial zoning sequence of elements in dayingzhuang and Xiadian gold deposits by using correlation analysis and format method. The front halo elements are as, Sb, Hg, B, and the near halo elements are Au, Ag, Cu, Pb , Zn and corona are Bi, Mo, Mn and Co. According to the co-existence criterion of front and tail halos and the trend criterion of front halo intensity, it is predicted that there are still blind ores in the deep.Based on the results of geological and geophysical and geochemical exploration, a comprehensive prospecting model of geological geophysical and geochemical exploration is established to determine the deep prospecting target area and point out the direction for the next prospecting work.