江西遂川地区多金属矿遥感蚀变信息提取

Extraction of Polymetallic Ore Remote Sensing Alteration Information from Suichuan Area in Jiangxi Province

利用遥感多光谱图像提取岩石蚀变信息是遥感找矿的重要方法,为此利用其对江西遂川地区进行研究。该研究区处于华南褶皱系,经历了加里东、印支、燕山、喜山等多期次构造运动,具有很大的成矿潜力。采用"比值+主成分分析+密度分割"的综合方法来提取蚀变信息,能够为研究区成矿预测研究与建立找矿靶区提供可靠依据。

Rock alteration information extraction using multispectral remote sensing image is an important method of remote sensing ore prospecting. Suichuan area in Jiangxi Province is taken as study area. Located in the southern China fold, this area has experienced Caledonian, Indo-China, the Yanshan and Himalayan tectonic movement, and has great mineralizing potential. The paper discusses extraction alteration information in research area by using inte- grated approach of ＂ratio, principal component analysis and density segmentation＂ , and provides a reliable basis for the metallogenic prediction and the establishment of prospecting target.