A New Mapping Method of Remote Sensing Alteration Information
Li Jianguo
Yu Yan
Gao Xuesheng
Chen Shengbo
Teng Xuejian
Abstract：Metallogenic prediction using remote sensing alteration information has been widely applied,but there is no system-atic mapping method.This paper suggests a new method of isodensity map compilation of remote sensing alteration informa-tion.Following the compilation pratice of geochemical field maps,the percentage of the area of each alteration information per unit area is statistically calculated,and the contour map of the areal density is generated.During the remote sensing analysis and geological survey in Dongwuqi region of Inner Mongolia,eight metallogenic prospective areas were successfully delineated by means of this method with the inferred lineation and circular structures based on remote sensing interpretation.Compared to the traditional compilation methods based on pixel units,this new map compilation method can not only effectively enhance the small area information occurring simultaneously on various alterations,but also provide a more visual presentation of the over-all spatial distribution and the concentration center of alteration information,favorable for delineation of metallogenic prospec-tive areas and selection of places for further field investigation.
Keywords：alteration informationmapping methodisodensitymetallogenic prospective areafield verificationremote sens-ingDongwuqi Inner Mongolia
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1346-1352 )