| The research area is located in the Qingbai mountain area on the east edge of Beishan area,which belongs to the Fe-Cu-Ni-Au-Pb-Zn-Mn-Co-V-U-Pt-P-Na-nitr-salt metallogenic belt of the magnetic sea the Mount Zhong Po(rift system),with superior metallogenic conditions.There are more than 20 gold deposits of different scales in Beishan metallogenic belt.However,there are few gold deposits found in the study area.At present,there are only the east Mount Qingbai gold deposit and the west Hongliuhe No.1 gold deposit.Under the similar metallogenic geological background,why does this happen?Therefore,this paper carries out the research on the prediction of gold prospective area in the study area.Taking the Hongshijing gold deposit in the same metallogenic belt as a typical deposit,based on the analysis of the metallogenic geological characteristics of the typical deposit,the prediction model of the typical deposit is established.And try to extend the model to the study area,in order to delineate the ore-forming prospect area for further deployment.Based on the analysis of the metallogenic geological background of the study area,combined with the metallogenic prediction model summarized by typical deposits,the regional comprehensive information prediction model is established according to the specific metallogenic geological characteristics of the study area through remote sensing structural interpretation,stratigraphic lithology interpretation and alteration information extraction.Guided by the metallogenic theory of the gold deposits of the cataclastic altered rock type,and combined with the distribution characteristics of the Au geochemical anomalies,the gold metallogenic prospect area is defined in the study area.The strike of the fault is NE-SW.Large scale faults include Hongliuhe fault and the Mount Sanjia South fault.There are many East-West ductile and ductile brittle faults in the area,and their secondary faults or fractures provide favorable channels and ore-forming space.The broken altered rock type gold deposits are strictly controlled by faults,and the ore bodies occur in major faults and secondary faults.According to the specific situation of the Mount Qingbai area,Landsat 8 data is used to interpret the structure and stratum of the study area,and ASTER data is used to extract the alteration information of hydroxyl,iron staining and carbonation.According to the known gold deposits in the study area,the reliability of the gold deposits is evaluated.Analyze the extraction results.According to the metallogenic prediction model of typical gold deposits,the information of structure,alteration anomaly and Au geochemical exploration anomaly closely related to mineralization is comprehensively analyzed.According to the classification standard of prospecting prospect areas,three gold metallogenic prospect areas are delineated in the study area:I the Mount Qingbai gold prospecting prospect area,II the north of Dashui gold prospecting prospect area and III the west of Mount Qingbai gold prospecting prospect area.The metallogenic geological conditions of all levels of prospective areas are analyzed.The remote sensing prospecting model is used to predict the prospective area of gold deposits in the area of qingbaishan,which is a beneficial attempt to find gold deposits in the area and provides reference for the gold prospecting work in the area. |
PDF Full Text Request