Geochemistry and U–Pb detrital zircon ages of late Permian to Early Triassic metamorphic rocks from northern Liaoning, North China: Evidence for the timing of final closure of the Paleo-Asian Ocean

•The Zhaobeishan Formation was deposited during 257–245Ma.•The eastern segment of the Paleo-Asian Ocean was finally closed during the Early Triassic.•The Changchun–Yanji suture marks the final closure of the Paleo-Asian Ocean.