胶东大尹格庄金矿床后疃矿区深部矿体定位预测  

Deep ore body positioning and prediction in Houtuan mining area of Dayingezhuang Gold Deposit in Jiaodong

作　　者：高学坎 席振铢[2,3] 向胤合 杨斌[2,3] 刘占坤[2,3] 邹艳红[2,3] Gao Xuekan;Xi Zhenzhu;Xiang Yinhe;Yang Bin;Liu Zhankun;Zou Yanhong(Zhaojin Mining Industry Co.,Ltd.;School of Geosciences and Info-physics,Central South University;Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University),Ministry of Education;Hunan 5D Geophyson Co.,Ltd.)

机构地区：[1]招金矿业股份有限公司 [2]中南大学地球科学与信息物理学院 [3]中南大学有色金属成矿预测与地质环境监测教育部重点实验室 [4]湖南五维地质科技有限公司

出　　处：《黄金》2024年第6期60-64,共5页Gold

基　　金：国家自然科学基金项目(42372346,41872249)。

摘　　要：后疃矿区位于大尹格庄金矿床主矿区外围,属于深边部找矿区段。采用多元信息找矿策略,通过构造地球化学法-伽玛能谱法-多极化电磁测深技术组合,开展后疃矿区深边部成矿预测。完成地表构造地球化学与伽玛能谱测量面积12 km^(2),结合因子分析,厘定后疃矿区构造地球化学找矿标志为Au-Ag-As-Sb组合异常。同时,采用MPMT-18多极化电磁测深系统,完成了L108测线—L136及L80测线多极化电磁测深和异常反演,确定了后疃矿区深部招平断裂的位置。根据构造地球化学测量、伽玛能谱测量与大地电磁测深的异常特征、分布与关联性,结合钻探工程验证的有利程度,共圈定找矿靶区8处。其中,A-1、B-1、B-3、C-2和C-3找矿靶区经钻探工程验证并见矿。Houtuan mining area is located on the periphery of the main mining area of Dayingezhuang Gold Deposit in Jiaodong,belonging to a deep and peripheral exploration area.Using a pluralized information exploration strategy,a combination of structure geochemistry-gamma spectroscopy-multi-polarize electromagnetics techniques was used to carry out ore prediction in the deep and peripheral areas of Houtuan mining area.Surface structure geochemistry and gamma spectroscopy measurements covering area 12 km^(2) were conducted,and through factor analysis,Au-Ag-As-Sb combination anomalies were identified as prospecting indicators in Houtuan mining area.Additionally,using the MPMT-18 multi-polarized magnetotelluric system,multi-polarize electromagnetics and anomaly inversion along Measurement Line L108-L136 and L80 were completed,determining the location of the deep Zhaoping fault in Houtuan mining area.Based on the anomalous features,distribution,and correlation of structural geochemical measurements,gamma spectroscopy measurements,and multi-polarize electromagnetics,combined with the favorable degree verified by drilling projects,a total of 8 exploration targets were identified.Among them,the A-1,B-1,B-3,C-2,and C-3 exploration targets were verified by drilling projects and yielded mineralization.

关 键 词：深部矿体 定位预测 多极化电磁测深 构造地球化学法 后疃矿区 大尹格庄金矿床 

分 类 号：TD15[矿业工程—矿山地质测量] P618.51[天文地球—矿床学]