Mineralization often is related to altered rocks. Landsat TMwith two bands within the short infrared wavelength (1. 1-2.5 μm) supples the ability for altered rocks mapping. But the vegetation covery masks the altered rocks information and confuses the reflectance spectrum. Three methods were developed for altered rock mapping in middle density vegetation area. They are principal component analysis, least square fit and unmixing. These methods are successfully applied in DianQingGui area for disseminated gold exploration. The clay minerals distribution information which is related to disseminated gold deposits were extracted and mapped,
陈光火. 中等程度植被覆盖区岩石蚀变信息提取技术及其应用[J]. 国土资源遥感, 1992, 4(3): 55-60.
Guanghuo Chen . THE TECHNIQUE DEVELOPMENT AND APPLICATION OF LANDSAT TM DATA FOR ALTERATION INFORMATION OF ROCKS MAPPING IN MIDDLE DENSITY VEGETATION AREA. REMOTE SENSING FOR LAND & RESOURCES, 1992, 4(3): 55-60.
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