Spatiotemporal variations of Jurassic–Cretaceous magmatism in easternAsia (Tan‐Lu Fault toSW Japan): evidence for flat‐slab subduction and slab rollback

Here, we examine spatiotemporal variations of Jurassic–Cretaceous magmatism along a c . 1000‐km transect across eastern Asia, including SW J apan, the Korean, J iaodong and Liaodong peninsulas, and eastern J ilin Province. Integration of tectonic regime data with age data from igneous rocks in eastern A sia (from the Tan‐Lu Fault to SW J apan) suggests a shallowing of the subduction angle and subsequent flat‐slab subduction during the Jurassic, and slab rollback during the Early Cretaceous. The combination of a subducting plateau and root‐enhanced suction provides the best explanation for the flat‐slab subduction. In the final stage (Albian) of slab rollback, the geotectonic setting changed from subduction–accretion to a continental arc in the area close to the ancient trench (i.e. the Inner Zone of SW J apan).