Subduction modelling with overriding plate

Subduction of oceanic lithosphere is one of the key processes of plate tectonics. The overriding plate is thereby often extended causing the formation of back-arc, or marginal, basins. With basic finite element simulations we study if and under what conditions back-arc basin can form due to passive rifting, i.e. necking, resulting from slab roll-back (Figure 1).

Figure 1: Finite element simulation of subduction with overriding plate.