纳米比亚哈达普铜铅金属矿普查区遥感地质解译与应用  

Remote Sensing Geological Interpretation and Application in the Hadapu Copper-Lead Metal Mine Census Area of Namibia

作　　者：胡官兵 廖志坚 刘舫 李懿 李政 HU Guanbing;LIAO Zhijian;LIU Fang;LI Yi;LI Zheng(Yunnan Center of Geological and Technical Information,Kunming,Yunnan 650051;Yunnan Geological Environment Monitoring Institute,Kunming,Yunnan 650051)

机构地区：[1]云南省地质技术信息中心,云南昆明650051 [2]云南省地质环境监测院,云南昆明650051

出　　处：《地质与勘探》2025年第1期211-220,共10页Geology and Exploration

基　　金：中国冶金地质总局山东局矿业权风险勘查项目(编号:冶金地质鲁地函[2014]2号)资助。

摘　　要：研究区位于非洲纳米比亚中南部区域,具有寻找铜铅金属矿的良好潜力。为配合地质勘查工作,查明区内铜铅矿资源成矿地质条件,选取SPOT-6、ETM+、ASTER等3种卫星遥感数据,建立遥感解译标志并开展详细地质解译及蚀变信息提取工作,同时在分析研究区矿产分布规律的基础上,分别从岩石地层、地质构造及遥感蚀变信息等方面总结归纳遥感找矿标志,并进行找矿预测。结果表明,区内各地质体影像特征差异明显,遥感解译成效好,解译出主要含矿层位地质界线,包括新解译岩体23处。对典型区域进行野外验证,经调查均为花岗岩体,解译成果与地质工作吻合度高,圈定4处有利找矿预测区。其中II号预测区,解译结果反映该区隐伏的含矿岩系可能受后期构造作用影响而抬升,有望寻找热液型和同火山岩有关的矿床。研究成果为该区矿产勘查提供遥感支撑,也可为周边类似区域遥感地质工作提供参考。The research area is located in the central southern region of Namibia in Africa and has great potential for searching for copper lead metal deposits.In order to aid to geological exploration work and to identify the geological conditions for the mineralization of copper and lead ore resources in the area,three types of satellite remote sensing data including SPOT-6,ETM+,and ASTER were selected to establish remote sensing interpretation indicators and carry out detailed geological interpretation and alteration information extraction.At the same time,based on the analysis of the distribution rules of mineral resources in the study area,remote sensing prospecting indicators were summarized from the aspects of rock strata,geological structures,and remote sensing alteration information,and prospecting predictions were made.The results show that there were significant differences in the imaging characteristics of various lithologies in the area,and remote sensing interpretation was effective.The geological boundaries of the main ore-bearing layers were interpreted,including 23 newly interpreted rock masses.Field verification was conducted on typical areas,and the investigation showed that they were all granite bodies.The interpretation results were highly consistent with field geological work,and four favorable prospecting prediction areas were delineated.Among them,the interpretation results of the II prediction area reflect that the concealed ore-bearing rock series in the area may have been uplifted by later tectonic activities,and it is expected to search for hydrothermal and ore deposits related to volcanic rocks.The research results provide remote sensing support for mineral exploration in the area and can also provide reference for remote sensing geological work in similar surrounding areas.

关 键 词：矿产勘查 铜铅矿 遥感解译 多源遥感数据 哈达普铜铅矿 纳米比亚 

分 类 号：P627[天文地球—地质矿产勘探] TP75[天文地球—地质学]