Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;
Institute of Geochemistry, China University of Geosciences, Wuhan 430074, China;
Institute of Geochemistry, China University of Geosciences, Wuhan 430074, China;
Institute of Geochemistry, China University of Geosciences, Wuhan 430074, China;
Pb isotope; tectono-stratigraphic unit; tectonic affinity; subduction zone; Beihuaiyang;