基于GIS的证据权重法在冀东地区多元信息成矿预测中的应用

Application of Evidence Weight Method Basing on GIS to Metallogenic Prediction in East Hebei province

本文通过详细分析和系统总结前人的研究成果,充分利用目前新的成矿预测理论和矿产资源勘查与评价理论和方法技术,结合GIS技术分别对冀东地区主要的沉积变质型铁矿床成矿规律进行分析总结,并对与该区成矿相关的地质信息、物探信息、化探信息等多元化信息归纳,总结出该区找矿概念模型。继而在证据权重法的基础上采用网格单元法,圈定了找矿远景区,实现了对冀东地区沉积变质型铁矿资源的综合预测研究。

Based on the detailed analysis and system summary of the previous research results,and make full use of the new forecasting theory,mineral resource exploration and evaluation theory and method,we make a systematically arrangement and induction to the information and data etc in the study area. At the same time,combined with GIS technology,the metallogenic regularity of the main sedimentary metamorphic iron ore was summarized,also geological information、Geophysical prospecting information and geochemical information related to the ore-forming of the study area was analysed detailed,thus generalizing the prospecting model of diversified information in the region. Then we use the grid cell method on the basis of the method of Evidence weights,circling the metallogenic prospects area and realizing the comprehensive prediction research of the sedimentary metamorphic iron ore resources in Jidong.