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.

 

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