基于铜陵矿集区遥感影像的地质解译及成矿远景区圈定研究

本文对铜陵矿集区的landsat 7 ETM+遥感影像进行综合分析,获取影像波谱特性,运用波段比值和主成分分析的方法提取铁染和羟基蚀变信息,利用彩色密度分割得到蚀变异常图像,清晰显示铜陵矿集区的成矿有利区域。并对遥感解译结果和铜陵地区地质构造与现有矿点对比,验证提取结果。圈定的11个成矿有利区域中:3个A类区蚀变信息明显,具备有利成矿条件,成矿潜力巨大;4个B类区蚀变信息中等,具备有利成矿条件,具有一定成矿潜力;4个C类区蚀变信息离散,成矿条件不明显,具有成矿可能,但是潜力不大。

GEOLOGICAL INTERPRETATION AND STUDY ON ORE- FORMING PROSPECTIVE ZONES DELINEATION BASED ON REMOTE SENSING IMAGE OF THE TONGLING MINING CAMP

This paper made a comprehensive analysis of landsat 7 ETM＋ remote sensing image of the Tongling mining camp to obtain spectral features, extracted iron stain and OH group alteration information using spectral ratio and principal component analysis, generated alteration anomaly image by color density slicing, which displays clearly the advantageous ore-forming areas in the mining camp. The extraction results were tested by comparing the interpretations with geological structures and known ore occurrences in the Tongling area. A total of 11 prospective ore-forming zones have been delimited： 3 class-A zones with remarkable alteration information showing great ore-forming potential; 4 class-B with moderate alteration information and a reduced potential; and 4 class-C with dispersed alteration information and a little or possible potential.