摘要
以滇中大红山群铜矿床找矿预测为例，探讨了应用地理信息系统（ＧＩＳ）查明地质异常，圈定“５Ｐ”地段的方法．在各类异常找矿有利度分析的基础上，找矿可行地段和有利地段的圈定按如下步骤进行：建立成矿预测空间模型；圈定找矿可行地段；确定用于预测找矿有利地段的异常组合及数值区间，并决定其权重；所选定的各异常叠合，形成叠合图；确定各级别找矿有利地段的归并标准，归并后圈出找矿有利地段．最后，具体地讨论了大红山群铜矿床的预测结果．
An approach is made for finding geological anomaly and delineating “5P”area by the application of geographic information system (GIS), with the predicting of Dahongshan-type copper deposits as its practical example. Based on the analysis of prospecting favourability of various anomalies, permissive ore-finding area and preferable ore-finding area can be delineated by the following steps: (1) establishing a spatial model for ore-forming prediction; (2) delineating the permissive ore-finding area; (3) determining the compound anomalies and numerical range indicating preferable ore-finding area and its weight; (4) congregating all the selected anomalies and making congruent map; (5) determining unifying criterion of preferable ore-finding area on various scales and (6) delineating preferable ore-finding area. Finally, the prediction results of Dahongshan-type copper deposits are evaluated.
出处
《地球科学（中国地质大学学报）》
EI
CSCD
北大核心
1998年第2期125-128,共4页
Earth Science-Journal of China University of Geosciences
基金
国家计委国土地区司科技找矿项目
地质矿产部矿产资源定量预测及勘查评价开放研究实验室资助
关键词
GIS
找矿
铜矿床
成矿预测
红山群
地质异常
geographic information system (GIS)
mineral exploration
ore-forming prediction
geo-anomaly
copper deposit.
