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.
出处
《地质与资源》
CAS
2011年第5期380-386,共7页
Geology and Resources
关键词
证据权重法
证据因子
多金属
预测远景区
辽宁省
evidence weight method
evidence factor
polymetal
prediction of perspective area
Liaoning Province
