综合物探方法在青海莫哈尔金多金属矿区的找矿勘查应用  

Application of comprehensive geophysical exploration method in the exploration of Mohar gold polymetallic deposit in Qinghai

作　　者：夏强 廖思睿 刘相钊 薛超平 梁小龙 XIA Qiang;LIAO Sirui;LIU Xiangzhao;XUE Chaoping;LIANG Xiaolong(Qinghai Provincial Nonferrous Third Geological Exploration Institute,Xining 810012,Qinghai,China)

机构地区：[1]青海省有色第三地质勘查院,青海西宁810012

出　　处：《矿产与地质》2024年第4期753-760,共8页Mineral Resources and Geology

基　　金：青海省省级地质勘查基金项目(编号:青国土资矿[2018]168号)资助。

摘　　要：在充分收集已有地质、矿产和物探勘查成果的基础上,以岩(矿)石物性特征为基础,选择高精度磁法测量、磁法剖面和激电中梯测量的物探方法对青海省莫哈尔地区12.5万水系沉积物化探异常开展查证。结果表明:高精度磁法和激电测量在构造破碎带和超基性岩体识别上具有良好的应用效果;低阻高极化异常是寻找构造蚀变岩型多金属矿的间接找矿标志,高磁异常区是寻找岩浆熔离型Cu-Ni矿区的理想靶区;综合物探成果在金多金属矿勘探中具有重要的指导意义。On the basis of the collection of geological,mineral,and geophysical exploration result,and the physical characteristics of rocks(ores),high-precision magnetic survey,magnetic profile,and induced polarization gradient measurement method are selected to verify the 125000 geochemical anomalies in the Mohar area of Qinghai Province.The result indicates that high-precision magnetic method and induced polarization measurement have the good application effects to identify the structural fracture zone and ultrabasic rock masse.The characteristics of low resistance and high polarization anomalies are indirect prospecting indicators for structural altered rock type polymetallic deposits,and the high magnetic anomaly area is an ideal target area to search for Cu Ni mining area of magma melting and detachment type.The comprehensive geophysical exploration results have important guiding significance in the exploration of gold polymetallic deposits.

关 键 词：激电中梯 高精度磁法 异常解释 找矿标志 青海莫哈尔地区 

分 类 号：P631[天文地球—地质矿产勘探] P618.51[天文地球—地质学]