证据权法在西藏尼木铜多金属矿产资源潜力评价中的应用  

Application of weights of evidence for Nimu copper polymetallic minerals potential evaluation in Tibet

作　　者：丁永月[1,2] 陈建国[1,2,3,4] 马秋石[1,2] 王成彬[1,2] 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉430074 [2]中国地质大学(武汉)资源学院,湖北武汉430074 [3]中国地质大学(武汉)地质调查研究院,湖北武汉430074 [4]国土资源部资源定量评价与信息工程重点实验室,湖北武汉430074

出　　处：《地质学刊》2013年第4期577-584,共8页Journal of Geology

基　　金：西藏尼木铜多金属矿和云南迪庆羊拉铜矿找矿评价研究;"十二五"国家支撑计划课题(2011BAB06B08-2);中国地质调查局地质大调查项目(12120113089100;1212011120986)资助

摘　　要：尼木矿集区是冈底斯铜矿带重要的铜矿区之一,采用基于GIS的证据权法对该区进行成矿预测。介绍了证据权法的基本理论,对研究区进行综合致矿信息提取,分别从地质、化探和遥感数据中提取致矿异常信息,将不同异常信息作为成矿预测证据因子,并对相应证据因子进行分析和筛选。选择10个证据因子进行成矿预测,最终得出A类远景区1处,B类远景区5处,C类远景区10处。Nimu ore concentration area was one of the important copper areas in the Gangdise copper metallogenic belt, the authors conducted metallogenic prediction in the study area with GIS-based weights of evidence, introduced the basic theory of weights of evi- dence, extracted comprehensive ore information in the study area, extracted ore-forming anomaly information from the data of geolog- ical, geochemical exploration and remote sensing. The authors selected different anomaly information as the evidence factors, analyzed and filtered relevant evidence factors, eventually 10 factors were selected as the evidence factors for metallogenic prediction. Finally, the authors obtained one class A prospect; five class B prospects and ten class C prospects.

关 键 词：铜矿床 信息提取 证据权法 MORPAS 成矿预测 西藏尼木 

分 类 号：P628.1[天文地球—地质矿产勘探] P618.41[天文地球—地质学]