基于GIS的内蒙古中部地区岩金矿床成矿预测研究

Research on metallogenic prediction of rock gold deposits in central Inner Mongolia based on GIS

内蒙古中部构造上处于华北地台北缘与内蒙古加里东海西褶皱带相接部位,区域成矿地质条件优越,已知金矿床(点)多达112处。在分析内蒙古中部地区地质特征,总结金矿成矿规律的基础上,借助GIS空间分析技术对该区岩金控矿因素进行了分析,建立了岩金找矿信息模型,并运用"找矿信息量"法和"特征分析"法对区内金矿资源进行了综合成矿预测,共圈定6处找矿远景区,其中A类远景区2个,B类远景区4个。

Central Inner Mongolia lies in the joint part of northern margin of North China platform and Caledonian Hercynian fold zone where favorable metallogenic geological conditions are bound ,with existing gold deposits as many as 112. Based on analysis of geological features and summary of the gold-controlling regularities ,ore-controlling factors in the region were analyzed with the help of GIS and a rock gold prospecting model was established. Comprehensive metallogenic prognosis was conducted applying the information computation method and the feature analysis method. With that,6 places with prospecting potentials were delineated and among them 2 were classified as A level and 4 as B level.