Table S4. Middle Paleozoic ridge subduction in Central Beishan of southern Altaids: Evidence from geochemical, Sr–Nd and zircon U–Pb–Hf–O isotopic data of Gongpoquan volcanic rocks ZhengRongguo LiJinyi XiaoWenjiao 2019 Table S4: Whole rock Rb–Sr and Sm–Nd isotopic compositions of Gongpoquan volcanic rocks in the Xiaohuangshan area.