基于矿床定位预测系统DPIS平台的成矿预测应用——以阳山金矿富集区为例  

The Application of Metallogenic Prognosis Based on DPIS:Take Yangshan Gold Enrichment Area as an Example

作　　者：喻光明[1] 白万成[2] 郭俊华[1] 

机构地区：[1]武警黄金第三总队,四川成都610036 [2]武警黄金指挥部,北京100055

出　　处：《黄金科学技术》2010年第4期33-36,共4页Gold Science and Technology

摘　　要：介绍了DPIS利用地质、物探、化探、遥感和矿产分布等矢量化空间数据库资料,按照“信息量法”或“证据权法”的方法步骤,完成一定区域范围内的找矿预测,优选找矿靶区。对地层、断层、岩体、化探异常、重砂异常和线环形构造6类地质标志分别进行了空间分布统计,共统计了83种标志状态,按照3 km×3 km的网格,借助DPIS将工作区划分为1 550个网格,按照信息量的频数分布以1.4为下限,将其划分为3级（其中Ⅰ级〉3.0;Ⅱ级为1.4－3.0;Ⅲ级为0－1.4）,并将Ⅱ级以上定为找矿的有利靶区;对阳山金矿带的下一轮成矿预测提出了新的找矿思路和找矿前景。Using vector-based spatial database information of geological,geophysical,geochemical,remote sensing and mineral distribution,according to approach steps o＂finformation method＂and＂weight of evidence method＂,DPIS completes exploration within a certain region prediction,optimation prospecting targets.We carry out spatial distri-bution statistics for six kinds of geological signs,such as stratum,fault,rock,geochemical anomaly,placer anomaly and thread-ring structure,total statistics 83 sign state,in accordance with 3 km×3 km grid,we divide the area into 1 550 grid with DPIS.According to frequency distribution of information,which minimum is 1.4,we divide the area into 3 levels（Ⅰ 3.0,Ⅱ1.4~3.0,Ⅲ 0 ~1.4）,and take above grade Ⅱ as a favorable exploration target.We propose new exploration ideas and prospecting for next mineralization prediction of Yangshan gold mine.

关 键 词：DPIS 成矿预测 阳山金矿 甘肃省 

分 类 号：P618.51[天文地球—矿床学]