Multiple-Stage Mineralization in the Huayangchuan U?REE?Mo?Cu?Fe Ore Belt of the Qinling Orogen, Central China: Geological and Re?Os Geochronological Constraints

Abstract The Huayangchuan ore belt is located in the western segment of Xiaoqinling Orogen southern margin North China Craton (NCC), and hosts voluminous magmatism significant U?REE?Mo?Cu?Fe polymetallic mineralization. However, geochronological framework various mineralization phases this region poorly understood. Here, we present new Re?Os isochron ages on magnetite from Caotan Fe deposit (2 675 ± 410 Ma, MSWD = 0.55), pyrite Jialu REE 127 280 1.9) Yuejiawa Cu (418 23 11.5), weighted average model age Taoyuan Mo?U (235 14 0.17). These ages, combined with regional geology other deposits, suggest that lasted Neoarchean to Late Mesozoic. corresponds tectono-magmatic events, including Neoar-chean alkali (REE mineralization), Paleoproterozoic plagioclase-amphibolite emplacement (Fe pegmatite (U Paleozoic Shangdan oceanic slab subduction-related arc (Cu Early Mesozoic Paleo-Tethys Ocean (Mo?U Paleo-Pacific plate subduction direction change-related Mo(-Pb) We proposed Huayang-chuan has undergone prolonged metallogenic evolution, associated were controlled by geodynamic events.