扎木敖包地区石墨矿和锌矿的综合地球物理解释  

Comprehensive Geophysical Interpretation of Graphite and Zinc Ore in Zhamuaobao Area

作　　者：董和平 毕宏宇 刘辉 

机构地区：[1]内蒙古地质勘查有限责任公司,内蒙古呼和浩特010090

出　　处：《工程地球物理学报》2017年第2期185-191,共7页Chinese Journal of Engineering Geophysics

摘　　要：研究区沉积变质型石墨矿、沉积变质-热液填充型锌矿均赋存于中太古界乌拉山群地层中。地表大面积的第四纪覆盖以及矿体与围岩显著的物性差异使物探在找矿中发挥重要作用。综合利用重、磁、电物探资料,并结合已有的地质和钻井资料对研究区内的成矿地质体、成矿构造、成矿结构面、成矿作用等特征标志进行解释。研究表明,区内富矿地层整体北倾,侵入岩体走向为近东西向,见矿位置的电性特征有两点,一是电阻率值在20~80Ω·m之间,二是位置在低阻区域与高阻区域的外接触带上,P1、P2勘探线控制的铁锌矿体,向北还有一定的延伸,建议钻井验证。Sedimentary-metamorphic graphite ore and sedimentary-metamorphic-hydrothermal zinc ore are hosting in Wulashan group of middle Archean.Large scale Quaternary coverage and difference in physical properties between ore and surrounding rock make geophysical exploration play an important role in prospecting.Combined with geological and drilling information,this paper uses gravity,magnetic,electrical information to interpret the characteristics of ore geological bodies,metallotectonics,ore forming surface and metallization in the study area.Research shows that the ore-rich stratum in the area entirely is dipping north and intrusive rocks are in the east-west direction.There are two electrical characteristics of the ore location：one is resistivity between 20Ω·m and 80Ω·m;the other is that the location is on the external contact zone between low resistance and high resistance.The iron-zinc ore controlled by line P1 and line P2 can be extended northward,and it needs to be proved by drilling.

关 键 词：扎木敖包 石墨矿 锌矿 综合地球物理研究 沉积变质型 

分 类 号：P631[天文地球—地质矿产勘探]