埃塞俄比亚西部地区遥感地质解译与靶区圈定分析

Remote Sensing Geological Interpretation and Target Area Delineation in the Western Region of Ethiopia

运用遥感技术对埃塞俄比亚西部地区地质情况进行解译,采用Landsat7卫星的ETM+数据作为数据源,根据研究区遥感影像特征,对研究区的地层、构造以及岩浆岩进行遥感解译;并以主成分分析法为主,辅以比值法和光谱角制图法提取羟基和铁染异常信息,结合区域地质条件,圈定遥感找矿重点工作区,为该地区的矿产资源勘查和资源潜力综合评价提供重要依据。

Remote sensing technology was used to interpret the geological information in Western Ethiopia, the ETM +data of Landsat7 satellite were used as the information source, based on the remote sensing image characteristics of thestudy area, the strata, tectonics and magmatic rocks of the study area were conducted with remote sensing interpretation;principal component analysis method was taken as the main method, supplemented by the rationing technique and spec-tral angle mapping to extract the hydroxyl and iron stained abnormal information, which can be combined with the re-gional geological conditions to block out the focus area of remote sensing prospecting, and to provide important founda-tion for mineral resources exploration and comprehensive evaluation of the resource potential in the area.