Research on three-dimensional mineral prospectivity modeling by integrating numerical simulation of the ore-forming process:A case study in the Chating area of Xuancheng,Anhui Province,China
The Chating area is situated in the northeastern part of the Nanling-Xuancheng ore cluster,within the middle-lower Yangtze River mineralization belt.Several porphyry and skarn-type deposits have been newly discovered in this region,indicating the significant epithermal ore-forming potential in the deep subsurface of the area.However,the traditional mineral exploration methods currently being carried out have limited capabilities for exploring deep-seated concealed ore deposits within the area,which hinders further mineral discoveries.In recent years,three-dimensional ore prediction has emerged as a crucial tool for predicting concealed ore deposits in the deep subsurface.However,the lack of three-dimensional predictive information remains a bottleneck restricting its forecasting capabilities.Current research indicates that three-dimensional numerical simulation methods of ore-forming processes can offer new three-dimensional predictive information for mineralization prediction.However,the application of multi-variable numerical simulation information and its support for three-dimensional mineral prospectivity modeling require further research.This study using the Chating area in Xuancheng,Anhui province as a case study,employs a three-dimensional geological model and conducts three-dimensional numerical simulations of the hydrothermal mineralization process coupled with stress-heat-flow fields.By integrating numerical simulation variables such as volume strain increments and shear strain increments with other predictive information,this study successfully delineated prospective deep-seated exploration targets.The results of this research demonstrate that the numerical simulation of ore-forming processes can provide valuable predictive information for three-dimensional mineral prospectivity modeling,significantly enhancing its predictive capabilities.In addition,the delineated target areas may offer more effective and reliable directions for further deep mineral exploration in this area.
three-dimensionalmineral prospectivity modelingore-forming process numerical simulationChating area
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