Qinghai Kaerqueka Copper Polymetallic Deposit Three-dimensional Geological Modeling And Quantitative Prediction

East Kunlun Qimantage metallogenic belt is located in the southwest of Qaidam basin, in the northeast of Qinghai-Tibet plateau, in the west of East Kunlun composite orogenic belt. Caerqueka copper polymetallic deposit, in recent years, is medium-size deposits be found in Qimantage area, metallogenic epoch is Middle-late Triassic, central mining area has the typical characteristics of skarn mineralization.Comprehensive collected in geological, geophysical, geochemical and remote sensing, mineral exploration and achievements of scientific research and information; Analyze the regional large and super-large deposit mineralization, focused on the geodynamics background of the mineralization, find out the main metallogenic systems in time and space structure, build mathematical quantitative model of regional metallogenic geodynamics background; Analysis of large and super-large polymetallic deposit formation mechanism, expounds the main metallogenic types and regularity, reveal tectonic, magmatic and fluid and so on control of the mineralization, build copper polymetallic deposit metallogenic model; Using multivariate information of mineral resources evaluation system, and combining with a variety of technical means, explore of the large and super-large prospecting model and quantitative evaluation model, delineate and optimizing ore-prospecting target area, to establish a technical method for prediction of large and super-large deposit forecast evaluation system.This research adopts the combined evaluation to realize 3d prediction of concealed orebody. Concealed orebody of ore-forming process simulation is a process of analysis to metallogenic geological anomaly, through discussing evolution of the various factors of affecting the development of geological processes in space and time, using numerical simulation method to construct coupling model of stress field-thermal field- fluid field to explain ore-forming geological process and metallogenic mechanism, finally extracted favorable metallogenic geological conditions to predicte concealed orebody distribution. It is based on physical and chemical experiments results, follow the law of nature and objective law, is not subject to the constraints of time and space scales, with visualization and scientific. Three-dimensional analysis of concealed orebody is a process of analysis to mineralization geological anomaly, in this study, on the basis of understanding of the geological background of Kaerqueka, according to the collection of prospecting information of geology, geography, remote sensing and geochemical anomaly, using computer modeling techniques(Surpac) to establish digital ore-field, and using the theory of “cube prediction model” and geo-statistics methods, to extract mineralization favorable information, choose the metallogenic prospect areas. Finally combined two methods to evaluate concealed orebodies, discuss the most favourable metallogenic area of Kaerqueka deposit, delineating target area, realize a breakthrough in three dimensional metallogenic prediction, puts forward a new method of concealed orebody prediction and evaluation.