基于证据权重法的辽东南芬-万宝地区多金属成矿远景区预测  

PREDICTION OF PERSPECTIVE DISTRICTS BASED ON EVIDENCE WEIGHT METHOD FOR THE POLYMETAL DEPOSITS IN NAFEN-WANBAO AREA, EASTERN LIAONING

作　　者：翟富荣[1] 杨占兴[1,2] 张国仁 梁帅[1] 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000 [2]辽宁省地质勘查局,辽宁沈阳110032 [3]辽宁省地质勘查院,辽宁大连116100

出　　处：《地质与资源》2011年第5期380-386,共7页Geology and Resources

摘　　要：南芬-万宝地区是辽东钼、铜、铅锌等多金属矿聚集地.在充分研究区内成矿规律的前提下,以MAPGIS软件为数据处理平台,提取区域地质、地球物理、地球化学等13个空间控矿因素作为证据因子;以划分网格单元的方式对成矿多元信息进行叠加整合,建立证据权重模型;以后验概率求拐点的方法圈定Ⅰ级远景区13处,Ⅱ级远景区10处,Ⅲ级远景区7处.预测结果表明,83%的矿床(点)位于成矿预测远景区内.除此之外,区内仍有3处Ⅰ级预测远景区内未见矿床(点),应作为今后找矿勘查的重点.Nanfen-wanbao area is the concentrated zone for the polymetal deposits of molybdenum, copper, lead-zinc, etc. in Eastern Liaoning Province. Based on the study of regional metallogenic regularity, with MAPGIS software for data processing platform, 13 spatial ore-controlling factors, such as regional geology, geophysics and geochemistry, are extracted as evidence factors. The muhiple metallogenic information is integrated by grid-setting to establish the evidence weighting model. By the way of posterior probability for inflexion, 13 perspective areas of Grade I, 10 of Grade II and 7 of Grave III are delineated. The result shows that 83% of deposits （occurrences） are located in the predicted perspective areas. It is worth noting that neither deposits nor occurrences have been found yet in 3 of the Grade I predicted perspective areas, which should be the key prospecting areas in the future.

关 键 词：证据权重法 证据因子 多金属 预测远景区 辽宁省 

分 类 号：P618.65[天文地球—矿床学] P618.41[天文地球—地质学]