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《Contributions to Geology and Mineral Resources Research》 2016-04
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Extraction of hydrothermal mineralization-alteration information based on the ASTER in Kangguertag gold ore belt

WU Mengjuan;ZHOU Kefa;WANG Jinlin;WANG Shanshan;ZHANG Nannan;ZHOU Shuguang;Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences,Xinjiang Research Center for Mineral Resources;Xinjiang Key Laboratory of Mineral Resources and Digital Geology;University of Chinese Academy of Sciences;  
Kangguertag gold ore belt is abundant with mineral resources.Ductlie shear zone is one of the ore-control factors.In this paper ASTER is used to extract remote sensing mineralization-alteration information and areas of N41°38′—N42°20′、E91°20′—E92°20′in Kangguertag region are picked up to be study area.Analysis of the rock and ore spectral features,and spectral characteristics of ASTER data shows that false color composite,band ratio,principal component analysis,eigenvector(Crosta Technique)etc.,image processing techniques were proper to identify mineralization-alteration and extract the information about the study area.Together with ArcGIS data the extracted mineralization-alteration information overprint the ore occurrence and tectonic layers of the study area and the layer overprint shows that the gold deposits(occurrences)are distributed along a transition zone on the southern side of the ductile shear zone.Referring to data and results of the study area the extracted information are coincided with the known deposit and occurrence thus ASTER data are feasible to make mineralization-alteration information extraction in the similar arid area.
【Fund】: 国家自然科学基金项目(编号:U1129302);; 国家973计划(编号:2014CB440803);; 新疆自治区重大专项(编号:2013301212;201330121-3);; 西部博士基金项目(编号:XBBS201107 XBBS201203)联合资助
【CateGory Index】: P627;P618.51
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