Minerogenetic series of metallic ore deposits in the Qinling Mountains and tectonodynamic background of the continental orogenic belts

Abstract: On the basis of the tectonic units, tectonic evolution and deposit association, the Qinling orogenic belt is divided into four mineralization concentration areas: the Xiao Qinling craton activation area, Xiong'ershan rift accretion area, South Qinling passive continental-margin down- faulted area and Bikou terrane paleo-assemblage zone, which separately form four minerogenetic series: the granite-greenstone belt-type gold-iron minerogenetic series, continental volcanic-hosted gold-molybdenum minerogenetic series, sedimentary-hosted gold-lead-zinc-mercury -antimony minerogenetic series and marine volcanic-hosted gold-silver polymetallic and ultrabasic-hosted nickel-gold minerogenetic series. Syngenetic mineralization is related to extensive mantle or hot spot activities in the early stage (Paleozoic and its preceding stage) of format of the orogenic belt; post-genetic mineralization was accomplished during the basin-range transformation and intracontinental tectono-magmatic activities (at 120 -340mA).