西藏冈底斯斑岩铜矿综合信息预测

Synthetic information prediction of porphyry copper in Tibet

建立了研究区1-500 000的地质、矿产、地球物理、地球化学和遥感等基础空间数据库,分析了斑岩铜矿控矿地质因素,对地球物理、地球化学和遥感等信息进行提取,建立了中间分析过程空间数据库,在此基础上利用证据权法进行信息综合,圈定3个A级找矿远景区,5个B级找矿远景区,4个C级找矿远景区,建立了成果空间数据库。预测结果表明:基于GIS综合信息预测是一种有效的矿产预测评价方法,其技术路线可分为空间数据库建设路线和地质信息路线,并建议加强对日多乡远景区矿产堪查工作,并在西部开展更大比例尺的地质调查工作。

After establishing basal spatial database, including geology database, ore deposit database, geophysics database, geochemistry database and remote sensing database on the scale of 1：500 000, the control of ore body formation for porphyry copper was analyzed, and the information from geophysics, geochemisl~：y, remote sensing was extracted, and a middle analysis process spatial database was set up. The integratement of the information based on the evidence of weight was carded out, 3 A level, 5 B level, 4 C level potential mineral resources areas were circled, and the achievement spatial database was established. The prediction results show that the Synthetic Information Prediction is a good method to predict and assess the mineral resources, and the method has spatial database construction route and geological information construct. It is reasonable to explore the mineral resources in Riduoxiang potential mineral resources area and work for geological survey in the west.