The core complex model was first developed in the cordillera of western North America, with older cores found in the north (Eocene), and younger to the south. Globally, core complexes are thought to be found in the Aegean Sea (Philippon et al. 2014) harv error: no target: CITEREFPhilipponBrunGueydanSokoutis2014 (help), Anatolia, Iran, Tibet, north China, Slovakia (Janak et al.