ASTER数据在斑岩铜矿区蚀变信息提取的应用——以秘鲁Don Javier斑岩铜矿及周边地区为例  

The Application of ASTER Data to the Extraction of Alteration Information in Porphyry Copper OreDistrict——By the Example of the Don Javier Porphyry Copper Deposit and Its Peripheral Area in Peru

作　　者：金文强[1] 石永兴 高亚龙[1] JIN Wen-qiang;SHI Yong-xing;GAO Ya-long(Tianjin North China Bureau of Geological Exploration,Tianjin300170)

机构地区：[1]天津华北地质勘查局

出　　处：《四川地质学报》2019年第3期468-472,共5页Acta Geologica Sichuan

摘　　要：在遥感光谱分析的基础上,结合Don Javier斑岩铜矿床地质特征,利用ASTER遥感数据,采用比值法和主成分分析法,提取了Don Javier斑岩铜矿床主要的蚀变矿物(高岭土、伊利石、明矾石、绿泥石、绿帘石、绢云母、褐铁矿、黄钾铁矾、针铁矿)异常信息。采用叠加法对各蚀变矿物信息进行叠加,得到蚀变矿物综合信息异常图。通过和已知矿床的对比,有着很好的对应性,表明利用ASTER数据提取的蚀变信息效果较好,并依据提取的信息提出了两个预测远景区。This study extracts the main anomaly information of alteration minerals such as kaolin,illite,alunite,chlorite,epidote,sericite,limonite,jarosite and goethite from the Don Javier porphyry copper deposit in Peru based on remote sensing spectral analysis in combination with geological features by use of ASTER data.The correlation with that of known deposits indicates that the alteration information extracted by ASTER data is high quality.

关 键 词：ASTER数据 遥感 蚀变信息提取 秘鲁 DON Javier斑岩铜矿 

分 类 号：P627[天文地球—地质矿产勘探]