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
高学坎 1席振铢 2向胤合 3杨斌 2刘占坤 2邹艳红2
作者信息
- 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;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
- 3. 湖南五维地质科技有限公司
- 折叠
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 km2,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.
Abstract
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 geo-chemistry and gamma spectroscopy measurements covering area 12 km2 were conducted,and through factor analysis,Au-Ag-As-Sb combination anomalies were identified as prospecting indicators in Houtuan mining area.Addition-ally,using the MPMT-18 multi-polarized magnetotelluric system,multi-polarize electromagnetics and anomaly inver-sion 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Key words
deep ore body/positioning prediction/multi-polarize electromagnetics/structural geochemical method/Houtuan mining area/Dayingezhuang Gold Deposit引用本文复制引用
基金项目
国家自然科学基金(42372346)
国家自然科学基金(41872249)
出版年
2024
NETL
NSTL
万方数据