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河南上宫金矿深部地质特征及找矿实践启示
Deep geological characteristics of Shanggong gold deposit in Henan Province and its implications for prospecting practice
【摘要】 上宫金矿位于华北地台熊耳山隆起部位,大型断裂带龙脖—花山背斜的南翼[1],金矿床均产于熊耳群火山岩系及下伏太华群地层中,产出严格受断裂带控制,属中—低温岩浆期后热液作用形成的构造蚀变岩型金矿床。基于上宫金矿深部找矿实践经验,对区域上同类型金矿深部找矿具有重要启示:对以往地质和生产资料充分利用和综合研究,总结成矿规律;区内北东向断裂规模最大,近南北向断裂次之,矿体深部延伸一般与断裂规模呈正相关性,近南北向、北东向和近东西三组断裂与北东向断裂带交叉处,是矿化富集部位;可控源音频大地电磁法测量和激电测井成果解译后钻探验证是深部及隐伏矿体找矿的最有效手段。
【Abstract】 Shanggong gold mine is located in the uplift of Xiong’er mountain in the North China platform,the south wing of Longbo Huashan anticline in large fault zone[1].All gold deposits occur in volcanic rock series of Xiong’er Group and underlying Taihua Group,it’s output is strictly controlled by the fault zone.Shanggong gold deposit is a tectonic altered rock type gold deposit formed by post magmatic hydrothermal process.The practical experience of deep prospecting in Shanggong gold mine can play an important role in the regional deep prospecting of the same type of gold deposits:The metallogenic regularity is of great significance;There is a highly positive correlation between orebody extension and fault extension,the intersection of nearly N-S, NE and E-W faults and NE faults is the enrichment site of mineralization;The interpretation of CSAMT and IP logging results complement each other with drilling verification,and this method combination is an effective means to find deep concealed deposits.
【Key words】 Geological characteristics; Deep prospecting; Practical enlightenment; Shanggong gold mine;
- 【文献出处】 世界有色金属 ,World Nonferrous Metals , 编辑部邮箱 ,2023年02期
- 【分类号】P618.51
- 【下载频次】1