Origin and evolution of multi-stage felsic melts in eastern Gangdese belt: Constraints from U-Pb zircon dating and Hf isotopic composition

►Zircon U-Pb data reveals five specific thermal events in the eastern Gangdese belt. ►These tectono-thermal events began in middle Jurassic and persisted to late Oligocene. ►Hf isotopic data suggest the existence of a crustal basement in the eastern Gangdese.