Fig. 3: Modelled timeline of magmatism for vertically driven initiation.
From: Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces
Cumulative magma produced between the future trench and back-arc (x-axis) over time (y-axis). Magmatic products are advected with the velocity at the surface of the model. The intensity of the shading is the predicted thickness of magmatic product. Panel (c) is solely decompression melts that would become fore-arc basalt (FAB). Panel (d) is for melts produced in the presence of slab fluid which would become boninite. The area outlined in red in panel (d) is the region of the surface below which the subducting sediment has crossed its solidus. The markers “2a”, “2b”, “2c” and “2d” correspond to the times the snapshots in Fig. 2 (a, b, c and d) are taken. Above this, in panels (a) and (b), are the thicknesses of “FAB” (black line) and “boninite” (blue line) at the end of the model run. The region where sediment melts might be found is highlighted in red.
