Geotectonic framework of Permo-Triassic magmatism within the Korean Peninsula

► Triassic syenite-monzonite-gabbro suite in South Korea possess post-collisional high-K calcalkaline and shoshonitic affinity. ► Permo-Triassic high- to medium-K calc-alkaline granites to granodiorites in South Korea suggest formation in a subduction setting, with evidence for minor crustal thickening and subsequent lithospheric delamination during collision. ► The origin and geodynamic setting of the Permo-Triassic plutons provide important constraints on the tectonic history of the Sino-Korean region in East Asia.