Analysis And Research On Genesis Types And Metallogenic Law Of Deposits In Kurutag Area,Xinjiang

The tectonic position of kuluketag area is located in the northeast of Tarim Basin,and the main part is located in the Tajik Tarim block.The structure in the area is complex,with metamorphic crystalline basement,metamorphic basement and caprock structure.The basement is composed of metamorphic Paleoproterozoic intermediate acid intrusive rocks and Paleoproterozoic and Mesoproterozoic metamorphic shallow marine sedimentary rocks,with high metamorphic grade amphibolite facies The cap rocks are Qingbaikou system and Nanhua system with slight metamorphism.Based on the theory of metallogenic series,on the basis of fully collecting geological exploration data and scientific research achievements,this paper selects typical deposits of different genetic types,analyzes their metallogenic geological characteristics and genesis,and summarizes ore controlling factors.On the premise of in-depth understanding of the metallogenic geological background,regional geological characteristics and previous known ore deposits in the region,the research on metallogenic regularity and resource potential evaluation in kulutag area of Xinjiang is carried out.The purpose is to systematically summarize the regional metallogenic law and carry out the research on typical deposits,establish metallogenic model,evaluate regional resource potential and support regional ore prospecting breakthrough.Based on the analysis of strata,tectonics,magmatic rocks,geophysical and geochemical characteristics in the area,combined with the study and analysis of metallogenic regularity of typical deposits in the area,the metallogenic prediction model of ergeztag bowenbulak type sedimentary metamorphic copper deposit prediction work area,the prediction model of keqiketuogela shuangfengling type fractured altered rock type gold deposit,and dongshannanshuang gold deposit prediction model are established The prediction model of Fengling type fractured altered rock type gold deposit.On this basis,it can be divided into two metallogenic sequences:Precambrian metallogenic series and Paleozoic(Variscan cycle)metallogenic series.Based on the study of metallogenic series and the comparison and analysis of prospecting practice of typical deposits,the metallogenic regularity and metallogenic model of gold and copper polymetallic deposits in this area are summarized.According to the principle of target delineation,metallogenic prediction work is carried out in the study area,and the target areas of ergzitag copper and keqiketuoglak gold are delineated,which provides scientific basis for future exploration work.