Fig. 2
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Initial set-up of the numerical model. The upper crust above 10 km depth is rigid and is not represented. From −10 km to −45 km depth, the behavior of the modeled crust follows a power-law temperature and strain rate dependent rheology. Heterogeneities are represented by layers that are more dense and viscous (black) and less dense and viscous (white) than the ambient medium.
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