摘要
在系统研究了赤峰地区萤石成矿规律基础上,确定了构造、围岩、围岩蚀变、F异常、CaO异常、岩浆活动、重力异常、磁力异常等8个主要控矿因素;基于GIS平台建立了研究区空间数据库,提取了4类14个成矿有利证据因子,并应用证据权重法对赤峰地区萤石资源进行了成矿预测,最终确定了三级成矿远景区,并圈定萤石成矿Ⅰ级远景区3个、萤石成矿Ⅱ级远景区5个、萤石成矿Ⅲ级远景区4个。
Based on the systemic research of fluorite metallogenic characteristics in Chifeng area,eight mian ore control factors are confirmed,which each are tectonic,wall rock,wall-rock alternation,F and CaO anomaly,magmatism,gravity anomaly,magnetic anomaly.First,spatial databases of study area are found of GIS-based,and fourteen kinds of four types favorable metallogenic evidence factors are extracted.Then,using evidence weights method to predict the fluorite metallogenic of Chifeng area,finaly,three levels of metallogenic prospect area are confirmed,and three levelⅠmetallogenic prospect areas,five level Ⅱ and level Ⅲ are delimited.
出处
《微计算机信息》
2011年第1期136-138,184,共4页
Control & Automation
关键词
地理信息系统
证据权重法
赤峰地区
萤石
成矿预测
GIS
weights of evidence method
Chifeng area
fluorite
metallogenic prognosis
