Metallogenic Prediction In Mid-west Section Of Jiangshan-Shaoxing Split Belt Based On GIS

Located in the middle part of Western Pacific volcanic belt, Zhejiang is one of the most important areas in eastern China with Mesozoic-Cenozoic magmatic activities. The province belongs to two structural units:the north-western part is at the southeast edge of yangtz platform and south-eastern part belongs to South China fold system. JiangShao collage belt, the result of the collision between Yantz-Huaxia plates, retains various magmatic and structural phenomena formed in the process of collision and collage. Predecessors did a lot of research in this area. Based on summarization of the cu-mo polymetallic metallogenic regularities, this paper uses the GIS as a tool to q quantified estimate and evaluate the cu-mo polymetallic resources at the western part of the JiangShao collage belt.Guided by geological theory and the previous research of cu-mo metal metallogenic regularities, the study used geological method and the GIS technology to extract mineralization favorable conditions from the geological material, geochemical and remote sensing information. By using weight evidence model, the pluralistic favorable information was comprehensively analyzed to delineate the target ore prospecting area, and vision zones compare with the previous studies. This paper has:1) Comprehensively collected and sorted existing geological and mineral data JiangShao collage, established cu-mo polymetallic mineralization geological model in the west-middle section of research area;2) Extracted favorable ore-forming information from the relevant strata, intrusive rocks, structure, geochemical anomaly information, remote sensing anomaly, ring structures and linear structures. And several mineral predictive marks of this study area are established;3) Using Weight of Evidence to estimate the copper polymetallic deposits in this area, graded the results into three degrees of vision zones. The prediction results can improve the accuracy and reliability of the metallogenic prediction in the research area;4) The consistency between the divided vision zones of this study and rank IV and rank V metallogenic belts shows the creditability of the study. There are certain innovations based on the former research in this study which has great guiding and feasibility for the future exploration.