Research on Extraction of Metallogenic Information Based on Field Model:a Case of Manganese Ore in the Western Guangxi and Southeastern Yunnan Areas

Focusing on the issue of inadequate extraction of metallogenic information especially geological information,this paper proposes a new method of extracting metallogenic information based on field model,i.e.the method for field analysis of metallogenic information,and made an case study of the extraction of metallogenic information with the method by taking the western Guangxi and southeastern Yunnan areas as an example.The presentation method for the field models of metallogenic information,including the metallogenic influence field model and the metallogenic distance field model,is discussed under the field theory by analyzing the presentation ways of the distance gradualness and the influence superposition of metallogenic information.According to the field theory superposition principle and the spatial distance analysis method,the mathematical models for the metallogenic influence field and the metallogenic distance field of point,line and area geological bodies are deduced by using parameter equation and calculus.Based on the metallogenic background analysis,the metallogenic information field models of synsedimentary faults and manganese sedimentary basins are built,and the correlation relationship between the metallogenic information fields and the manganese mineralization distribution is investigated,by using the method of metallogenic information field analysis.The case study indicates that the method of metallogenic information field analysis is useful for extracting the ore-controlling information of synsedimentary faults and manganese sedimentary basins in the study area,and that extraction results are both statistically and geologically significant.