Early paleozoic granodioritic plutons in the Shedong W–Mo ore district, Guangxi, southern China: Products of re-melting of middle Proterozoic crust due to magma underplating

The Shedong W–Mo ore district in the south–central Dayaoshan Uplift of Guangxi, southern China hosts the Baoshan and Pingtoubei deposits, both of which occur in granodioritic plutons. Zircon U–Pb dating of granodiorites and its mafic microgranular enclaves (MMEs) in the Baoshan deposit yielded ages of 439.8 ± 3.2 and 441.1 ± 2.2 Ma, respectively. Granodiorites have moderate SiO2 (54.5–63.0 wt.%) and high Al2O3 (15.4–17.8 wt.%) contents, wide...