摘要
为较好的确定找矿靶区,在分析青海立新地区区域地质、物探和化探资料的基础上,通过1:5万遥感解译、地质测量、水系沉积物测量和地面高精度磁测方法研究了成矿特征。结果表明:遥感解译能够有效地提取与矿产有关的羟基和铁染信息,为地质填图和预测靶区提供了有效的宏观信息;地面高精度磁测异常能有效地识别控矿构造、矿化带和岩体的分布情况;水系沉积物测量显示区内W、Bi具强富集性,Pb、Zn、Cd具有良好的相关性。根据地质特征、遥感解译信息、地球物理和地球化学信息综合分析的基础上,预测了研究区内具有前景的找矿靶区3处,有望为该区铅锌铜多金属矿的勘查和评价工作提供重要参考。
In order to better determine the prospecting target area,based on the analysis of regional geological,geophysical and geochemical data in Qinghai Lixin area,1∶50,000 remote sensing interpretation,geological survey,stream sediment survey and ground high-precision magnetic survey method was used to investigate metallogenic characteristics.The results show that remote sensing interpretation can effectively extract the hydroxyl and rion-stained information related to minerals,and provide effective macro information for geological mapping and prediction target area;ground high-precision magnetic can effectively identify the distribution of orecontrolling processes,ore band and rock masses;stream sediment survey shows that W-Bi are strongly enriched,Pb-Zn and Cd have good correlation.It is concluded that based on the comprehensive analysis of geological characteristics,remote sensing interpretation information,geophysical and geochemical information,three prospecting target areas are predicted,which is expected to be a prospect for lead,zinc and copper polymetallic deposits in the area,and provide an important reference for evaluation work.
作者
张庆华
蒲开兴
罗洪远
ZHANG Qing-hua;PU Kai-xing;LUO Hong-yuan(Geological and Mineral Resource Exploration Institute of Guizhou Non-ferrous Metal and Nucleus Industry Geological Bureau,Guiyang 550005,China)
出处
《矿产勘查》
2019年第4期929-937,共9页
Mineral Exploration
基金
青海省地质勘查基金项目(KD2012-06)
关键词
找矿靶区
多金属矿
综合方法
成矿预测
prospecting targets areas
lead-zinc polymetallic ore
pomprehensive methods
metallogenetic prognosis
