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ASTER图像被广泛应用于蚀变矿物填图中,但综合采用多种方法并对结果进行优选的研究鲜有报道。以新疆巴里坤县三道岭地区为研究区,综合采用比值法和主成分分析法处理ASTER数据进行蚀变矿物填图,利用已知矿点、小岩体、构造、化探异常等信息对各种方法提取的遥感异常结果进行对比、筛选,进而选取最优结果,之后结合地质、化探异常综合分析圈定了15处靶区,通过对其中9处靶区进行野外检查发现铜、金矿化点7处。结果表明多种蚀变矿物填图方法对比、优选较单一处理方法更为有效。
ASTER images are widely used in alteration mineral mapping, but there are few reports on the combination of various methods and the optimization of the results. Taking the Sandaoling area in Barkol County, Xinjiang as the research area, the ASTER data were processed comprehensively using the ratio method and principal component analysis to carry out alteration mineral mapping. By using information such as known ore points, small rock mass, structure and geochemical anomaly A total of 15 target areas were delineated by a comprehensive analysis of geology and geochemical anomaly. Through the field inspection of 9 target areas, it was found that copper, gold ore 7 points. The results show that the comparison of many alteration mineral mapping methods is more effective than the single treatment method.