基于GIS的证据权重法在内蒙古阿鲁科尔沁旗地区成矿预测中的应用

收稿日期：2009-07-13；修订日期：2009-10-26

基于GIS 的证据权重法在内蒙古阿鲁科尔沁旗地区成矿预测中的应用

刘晓玲，陈建平

LIU Xiao-ling,CHEN Jian-ping

中国地质大学（北京）地球科学与资源学院/中国地质大学（北京）国土资源与高新技术研究中心/北京市国土资源信息开发研究实验室,北京100083

School of Earth Sciences and Resources,China University of Geosciences/Institute of High and New Techniques applied to Land Resources,China University of Geosciences/Beijing Key Laboratory of Development and Research for Land Resources Information,Beijing 100083,China

摘要：内蒙古赤峰市阿鲁科尔沁旗地区地跨大兴安岭东坡、主峰、西坡3个成矿带，具有良好的成矿条件。在提取该地区的地质、物探、化探和遥感基础信息的基础上,以地质异常理论为指导，运用数理统计分析的方法和GIS 技术，综合分析多源数据，提取不同的成矿信息标志，利用证据权重法对研究区进行成矿定量预测与评价。此次预测工作共选出15个证据因子层，对该地区以热液型矿床为主的有色金属矿产进行定量预测与评价，最终得出3个远景区。关键词：GIS ；证据权重法；成矿预测；内蒙古阿鲁科尔沁旗地区中图分类号：P612

文献标志码：A

文章编号：1671-2552(2010)04-0571-10

Liu X L,Chen J P.Application of GIS-based weights of evidence method for mineral quantitative prediction:A case study on Alukerqin area,Inner Mongolia,China.Geological Bulletin of China,2010,29(4):571-580

Abstract:Alukerqin area spans three mineralization belts —the main peak of Daxing ′anling,the east-slope of Daxing ′anling and the west-slope of Daxing ′anling.Having the advantageous of mineral-formation conditions,Alukerqin area is rich in underground mineral resources in Chifeng City ,Inner Mongolia Autonomous Region.Based on the geological anomaly theory and using the mathematical statistic methods,this work synthesize some basic information including geology data,geophysics data,geochemistry data,remote sens -ing data and mineral resources database.Then we find multivariate data related with mineralizing process such as strata ,structural,magmatic rocks,aeromagnetic survey,gravimetric survey,geochemical exploration and remote sensing by GIS technology.Moreover,according to the geological anomaly theory,we select most important digital data from these layers as favorable mineralization factors of the evidence weights method which was initiated by Dr.Agterberg in this work,we select 15important layers from all data as evi -dence factors to predict and evaluate the nonferrous metals deposit which were generated by hydrothermal activity including Cu,Pb and Zn.So we divided 3metallogenetic prospective areas in Alukerqin area.

Key words:GIS;evidence weights method;quantitative prediction of mineral;Alukerqin area,Inner Mongolia

地质通报

GEOLOGICAL BULLETIN OF CHINA

第29卷第4期2010年4月Vol．29，No．4Apr.，2010

成矿预测是在不确定条件下制定最优决策的工作[1]，其应用地质理论和科学的方法，综合地质、地球物理、地球化学、遥感地质等基础地质工作获得地

质找矿信息，总结成矿地质条件和矿床赋存规律，建立矿床模型，圈定不同级别的成矿远景区[2]。20世纪

80年代以来，GIS 技术被引入成矿预测中，取得了显