To Yuanmou Pudeng Of Copper Polymetallic Ore Comprehensive Information Mineralization Prediction

The research area named PuDeng at YuanMou locates in the east of Yuanmou uplift and the west of Yuanmou major fault. some prospecting was conducted in the research area, information was accumulated, foundation was laid, but the methods which were used in the past was so single that the overall level of comprehensive study was low. Through comprehensive analysis of fore data and the work carried out in recent years, there is still large potential of ore prospecting in this district. It is worth to study the regional geology background, the metallogenic condition , regularity and prospecting indicator deeperly, predicting of the synthetic metallogenic, it can offer the target regions for ore prospecting.The thesis relyed on the project of "exploration of mineral resources at Yuanmou in Yunnan Province", with the theory of synthetic metallogenic prediction as guidance, on principle of statistical,formed professional theme layer by using the Geological Information System technology to process geological,geochemical and remote sensing synthetic information,and then correspond a thematic layers, using GIS to analysis various metallogenic information to conform the multivariable weight coefficient and obtain the synthetic information quantitative prospecting model; and located different levels ore prospecting area.Concrete steps as follow:(1)8 synthetic information graphic layers were completed on the MAPGIS platform under the same precision and geographic coordinate;(2)Take the method of GIS to analyse the relationship of mineralization within stratigraphy,igneous rock and fracture, deduce that unit-mineral-resource and fracture buffer;Though the analysis of the achievement of the fluvial sediment, soil and the measurement of rock to reduce the research area gradually.(4)Remote Sensing images were interpreted circle and linear structure, and extracted mineralization information from these images; Using GIS as a complementary tool to integrate RS and GIS on the level of data;(5) By using MAPGIS spatial functions include of indexing,attribute management,clipping,point to polygon intersection,line to polygon intersection,polygon to polygon intersection,Buffer analyses,attribute analyses,DTM analyses,image analyses,Projection analyses to confirm the factors of controlling and prospecting indicators. Based on the value of binary variable,take the method of the information rule, and determine the Coefficient of variables weight, and then calculate the information stream of integrated prospecting on every Cells.(7)Conforming 0.43 as a critical point of integrated information, identify three A-level targets and two B-level targets accurately.Integrated information metallogenetic prognosis supported by GIS technology, Realizd the imply for multi-source information integration, increased reuse of data and significantly improved the efficiency for policy-makers , provide the macro the Macro information of planning. It becomes an important way to using available data, extracting of potential information and improving the standard of forecasting of mineral resources in the area of geological Prospecting.