Extraction of Remote Sensing Alteration Information and Analysis of Ore-searching Prospect in Jianglang Dome Metallogenic Zone

Jianglang dome is an important ore-controlling structure in Jianglang area which is the part of Jiulong-Muli Cu-Zn polymetallic metallogenic belt in the western margin of Yangtze terrane.There are many mineral deposits and mineral occurrences in Jianglang area,and the prospecting potentiality around Jianglang dome is very good.By analyzing the geological basis,spectrum characteristic and remote sensing alteration information,the paper extracts the information of the iron alteration and the soil alteration according to the feature of mineral and spectrum character of the altered mineral.Combining remote sensing information with the precursory geological,geomagnetic and geochemical research results,the paper has a comprehensive analysis and suggests that Wajingou-Boxianglin,Daxionggou-Heiniudong,Shanghaidi-Baiyazi-Sunyelin are the good prospecting areas in Jianglang dome.