Two Epochs of Mineralization of Orogenic Gold Deposit in the East Kunlun Orogenic Belt: Constraints from Monazite U–Pb Age, In Situ Sulfide Trace Elements and Sulfur Isotopes in Wulonggou Gold Field

The Wulonggou Gold Field is one of the giant gold fields in East Kunlun Orogenic Belt, northwestern China. Previous studies mainly focused on elementary mineral isotopic studies, fluid inclusions, and geological features Field. In this study, we report some research precise age specific ore-forming process WGF: hydrothermal monazite U–Pb ages; way precipitation; composition, evolution, source fluids Finally, demonstrate a link between two-stage events sequential episodes crust-derived magmas, with implications for metallogeny Belt. There are four stages that recognized: quartz–pyrite stage (stage 1), quartz–pyrite–arsenopyrite–chalcopyrite 2), quartz–galena–sphalerite–pyrite 3) quartz–stibnite–carbonate 4). ages Huanglonggou Hongqigou deposits were 422.2 ± 2.4 Ma 236.7 3.7 Ma, respectively, which support opinion two epochs mineralization. Stages 1 2 main mineralization stages, wherein Au As have close genetic relationship. seem to been formed different metallogenic due contrast trace element compositions pyrite. sources materials show apparent characteristics orogenic deposit, magmatic during Paleozoic Mesozoic an important contribution formation deposits. can be interpreted as system related two-epoch tectonic–magmatic events.