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On the possibility of a steady state backflow in the mantle wedge

Publication at Faculty of Mathematics and Physics |
2009

Abstract

We developed a numerical model of a pseudo-plastic subduction plate. The results showed that both the temperature field and the geometry of the slab are strongly controlled by weakness zones in the topmost part of the subducting plate and in the cold tip of the mantle wedge.

We showed that a backward flow may evolve along the plate wedge interface if the cold portion of the mantle wedge is weak