高精度磁测在冀东峪耳崖金矿找矿中的应用  

Application of high precision magnetic survey to prospecting in Yu'erya gold deposit of eastern Hebei

作　　者：王庆磊[1,2] 杨言辰 韩世炯[1] 孙德有[1] 李临位[3] 吴景荣 WANG Qing-lei;YANG Yan-chen;HAN Shi-jiong;SUN De-you;LI Lin-wei;WU Jing-rong(College of Earth Sciences,Jilin University,Changchun 130061,China;Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd,Shanghai 200092,China;Beijing Gold Geological Exploration Co.,Ltd,Beijing 100070,China)

机构地区：[1]吉林大学地球科学学院,长春130061 [2]上海市政工程设计研究总院(集团)有限公司,上海200092 [3]北京金有地质勘查有限责任公司,北京100070

出　　处：《世界地质》2018年第1期232-242,共11页World Geology

基　　金：中国地质调查局地质调查项目(121201103000150060);中国黄金集团公司科研项目(20150401012)联合资助

摘　　要：在野外1∶1万地质测量、井下大量坑道观察和编录基础上,对冀东峪耳崖金矿床矿区1∶1万高精度磁法测量数据进行化极、延拓、求导处理,将峪耳崖矿区的高磁异常划分为低缓正异常场、低缓负异常场和中高正异常场3种场区,解译出不同方向线性断裂构造31条,以北东向、北西向构造为主,构成矿区构造格架;磁化极异常进行4个高度50 m、100 m、200 m、500 m垂向二阶导数计算,形态受北东向、北西向及南北向构造综合控制,沿北东方向带状分布。结合已知矿体的构造控矿规律及岩体控矿特征,确定区内成矿远景区圈定依据为成矿磁性体形态、产状变化地段;北东向构造面与北西向、南北向、东西向构造交汇复合部位;黄铁矿化、硅化、大理岩化及绢云母化等蚀变发育部位。Based on the geological survey of 1∶10 000 and large amount geological observations in the underground tunnels and logging in mining wells,polarization,continuation and derivation methods were applied to process the high precision magnetic survey data of 1∶10 000 scale.The magnetic anomalies in the Yu erya mining district were classified into low positive anomalies,low negative anomalies and moderate to high positive anomalies.31 linear structures extended along different directions were interpreted,most of which are northeast and northwest trending,which formed the tectonic framework of the mine area.Vertical second order derivatives at 4 vertical heights(50 m,100 m,200 m and 500 m)of the magnetic pole anomalies are calculated,the morphology is controlled by NE,NW and NW structures,and distributed along the northeast direction.According to the ore controlling rules of the known ore bodies and the characteristics of rock mass control,the delineation of metallogenic prospect in the study area is based on the form of metallogenic magnetic body,and the change of occurrence of the mineralization,the intersection position of the northeast structure with the northwest,northsouth and eastwest structures,and the alteration sites of pyrite,silicification,marbleization and sericitization.

关 键 词：高精度磁测 峪耳崖金矿 控矿构造 成矿远景区 

分 类 号：P618.51[天文地球—矿床学] P631.221[天文地球—地质学]