Fig. 2: Models of vertically and horizontally driven subduction initiation.
From: Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces

Temperature profiles in a–d: the model displaying vertically driven subduction initiation (taken at 150, 590, 790 and 920 kYrs from the start of the model run); e–h: the model displaying horizontally forced subduction initiation (taken at 1.1, 4.9, 5.1, 5.3 Myr from the start of the model run). Overlain are: regions where decompression melting is occurring (black outline); where melting is occurring in the presence of slab fluid (blue outline) and the region of the subducting crust which has crossed its solidus (green outline). Above each profile (for the vertically driven model only, a–d) is the eruption rate of decompression melts, assuming that all melt is extracted and travels vertically to the surface.