地理信息系统在评价冀东地区绿岩型金矿资源中的应用  

EVALUATION OF GOLD POTENTIAL OF GREENSTONE TYPE IN THE EASTERN HEBEI OF CHINA BY USINGGEOGRAPHIC INFORMATION SYSTEM

作　　者：向运川 张华 任天祥 姚志强[1,2] 

机构地区：[1]地矿部物化探研究所 [2]河北地矿局物探队

出　　处：《物探化探计算技术》1997年第1期56-65,共10页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：本文应用地理信息系统（ＧＩＳ）对冀东地区的地质、地球化学数据和地球物理、遥感解释资料（包括１∶５０万地质图，１∶２０万水系沉积物和１∶１００万地球物理、遥感）的推断成果，进行了综合分析。应用专家知识和统计规律建立起该区以地球化学为主要特征的绿岩型金矿的预测模型，并利用逻辑运算和贝叶斯规则把各种资料（反映绿岩型金矿的特征）有机地结合起来。采用地理信息系统空间分析有效手段，编制出了研究区绿岩型金矿预测图。以概率的形式表示金矿的潜在远景区，明确地证明了区内已知的大中型和小型矿区和高概率区是相符的，同时指示出一些有意义的靶区。In this paper, spatial data analyzing technology of GRASS-a geographic information system is used to integrate the geochemical data of 25 elements , basic geologic evidences and geophysical and remote sensing interpreting results. The inference network model of evaluating greenstone gold potential for the study area is built in the light of expert knowledge and statistics results from original data,and the evidences in the network are combined by logical operators and Bayesian calculation. The potential of greenstone type gold resources in the study area is outlined and mapped with probability values. This study clearly shows that the known large and small gold deposits in the area are identical to the high probability areas, and at sametime, several unknown and favorable potential targets are illustrated, which have been accepted as a basis for the further exploration in the area.

关 键 词：GIS 绿岩型金矿 综合预测 金矿床 

分 类 号：P618.510.8[天文地球—矿床学]