Fig. 13. Tectono-magmatic model for the evolution of the Caribbean island arc magmatism. It is inspired in the modelling of the Izu-Bonin-Marianas subduction system (Maunder et al., 2020). Subduction initiation took place in response to the sinking of the oldest and thickest lithosphere in the mantle, which originated an asthenospheric upwelling and a lithospheric ‘gap’ beneath the old transform fault. The temperature profiles show the regions where decompression melting and melting in the presence of slab fluids occurred, and where subducting crust crossed its solidus. Above each temperature profile, the evolution of magmatism in the Caribbean island arc is shown schematically. See text for explanation.