Remote Sensing Lithology And Mineralization Alteration Extraction Based On Rock And Mineral Spectrum Characteristic

Huize county is one of an important concentration area of lead-zinc multi-metal metallogenic belt in northeast Yunnan.One of its pb-zn orebodies mainly occurs in the Sinian period and the Permian carbonate formation,controlled by the strata and tectonic,to determine the distribution characteristics of the ore body.The mine belongs to the alpine deep special landscape areas that take great difficulty for work because of complex landform and traffic inconvenience.Looking for a low cost and fast reading prospecting techniques is very necessary in order to start research in this areas.With the development of remote sensing technology and the constant improvement of the spatial resolution,as well as the rise of the computer image processing,remote sensing technology is playing a more and more important role in geological prospecting.This thesis is based on the subject of "Jinhong,Yulu an Daibu lead-zinc deposit prospecting within exploration area in Huize county" signed by Kunming university of science and technology and Yunnan Chihong zinc germanium co.,LTD in 2010.Using remote sensing method,author conduct comprehensive research in this areas and complete remote sensing information metallogenic forecast.In order to complete the study,the team cooperates with Imperial College of London Dr.LiuJianguo team,adopting the high precision ASTER data to conduct atmospheric correction and using atmospheric correction and Balance contrast enhancement technique to enhance processing.Using ASD FieldSpec 3 portable spectrometer to test spectral features in order to get spectral curve and build data base in the study area.By the method of spectral angle and choice of feature oriented principal to fetch,contrast,analyze the study area and select the suitable way to fetch alteration information,the purpose that metallogenic prognosis through remote sensing is completed.