多不杂斑岩型铜金多金属矿床综合地球物理场特征  

The Geophysical Field Characteristics of Duobuza Copper-gold Polymetallic Deposit

作　　者：朱丽丽[1] 庹先国[1] 李光明 段志明 刘明哲[1] 葛宝[1] 

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室 [2]成都地质调查中心

出　　处：《金属矿山》2012年第11期102-104,150,共4页Metal Mine

基　　金：国家杰出青年科学基金项目(编号:41025015);西藏典型矿床勘查模型和综合信息找矿模型研究项目(编号:121201112139)

摘　　要：通过介绍激电中梯法和高精度磁测法在多不杂矿段的找矿实践,分析和总结了矿区内地球物理场特征与矿体之间的关系。结果表明,在矿体附近激电异常特征表现为低视电阻率和高极化率,并且随着矿物中金属硫化物含量的增加,极化率也增高;矿体上高精度磁测异常特征表现为低磁正异常。总体来看,矿区内物探异常围绕花岗岩岩体及接触带附近分布,套合良好,真实反映了含矿花岗闪长斑岩体及矿化蚀变分布范围,为今后多龙矿区内寻找铜金矿床提供了地球物理场特征。The relationship between the characteristics of geophysical field and the ore body in the mine was analyzed and summarized by introducing some prospecting practices which were used induced polarization gradient technique and pre- cision magnetic measurement methods in Duobuza ore segment. The results show that IP anomalies characteristics is low ap- parent resistivity and high chargeability near ore body, and the polarization rate increased with the increase of metal sulfide content in the minerals. Ore bodyg abnormal characteristics of precision magnetic survey are low magnetic normal anomaly. Overall, the mine Geophysical anomalies distribute around the granite rock mass and the contact zone, and reflect the Ore granite porphyry and Mineralized alteration distribution range. The results provide the characteristics of geophysical fields to look for copper-gold deposit in Duolong in future.

关 键 词：斑岩型铜矿床 激发极化法 高精度磁法 综合物探找矿模型 多不杂 

分 类 号：P544.4[天文地球—构造地质学]