Silicification Information Extraction Based on the Content of SiO2 from ASTER TIR Data
Liu Daofei
Chen Shengbo
Chen Lei
Ma Ming
Abstract：Silicic alteration,an important alteration type among mineral rock alteration,has close relationship with the forma-tion of several gold mines and it has often been treated as symbol for geological prospecting in the field.This paper proposes a method for the silicification information extraction through analyzing the ASTER (advanced spaceborne thermal emission and reflection radiometer)TIR spectral characteristics of silicification alteration minerals and selecting the content of SiO 2 as an ac-cessory factor based on the relationship between silicification and the content of SiO 2 .The method was applied in northern er-lianhot city of Inner Mongolia and the silicification information of study area was extracted.By the field survey,33 of the 39 si-licification sampling sites have been verified,with an accuracy of 86.14%.
Keywords：thermal infraredASTERremote sensingSiO 2silicification
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( 1396-1402 )