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通过对矿床成因及成矿模型的研究,东昆仑五龙沟地区金矿床(点)的产生及分布主要受控于3个线性地质体,分别为NW-NWW向断层、华力西期-长城纪接触带、印支期钾长花岗岩,形成了金矿床定位的线性分布特征.应用GIS技术,采用邻近度分析定量刻画了3个线性地质变量与金矿床(点)之间的空间相关性,选取3个最佳的控矿变量作为预综合的证据图层.通过证据权方法进行后验概率制图,将研究区划分为高、中、低潜力区.其中,高潜力区占整个研究区面积的5.9%,预测到70.6%的已知金矿床(点),圈定的区域在空间上呈NW-NWW向展布,与实际的控矿特征和矿床(点)的分布非常吻合,达到了很好的预测效果,该研究成果为五龙沟金矿资源勘探开发提供了科学依据.
The origin and distribution of gold deposits in the Wulonggou area of eastern Kunlun are mainly controlled by three linear geologic bodies, namely NW-NWW fault, Waxixi-Great Wall The contact zone and the Indosinian potash-bearing long-granite, forming a linear distribution of gold deposits.The spatial correlation between the three linear geological variables and the gold deposit (point) is quantitatively described by using the proximity analysis (GIS) The three best ore-control variables are selected as the pre-integrated evidence layer.The a posteriori probability mapping is carried out by the method of evidence right, and the research area is divided into high, medium and low potential areas, of which the high potential area accounts for the entire research area Of the known gold deposits (points), and the delineated area is NW-NWW spatially distributed, which is in good agreement with the actual ore-controlling characteristics and the distribution of ore deposits Good prediction results, the research results provide a scientific basis for exploration and development of Wulonggou gold resources.