Changes

====Viscoelastic-plastic rheology====

====Viscoelastic-plastic rheology====

Most models simulate lithospheric plates with a viscoelastic-plastic rheology. In this simulation, plates deform [[Viscoelasticity|viscoelastically]] up to a threshold level of stress, at which point they deform in a [[Plasticity (physics)|plastic]] manner. The lithospheric [[yield stress]] is a function of pressure, stress, composition, but temperature has a disproportionate effect on it.<ref name=Moresi_solomatov_1998 /> Therefore, changes to the lithospheric temperature, whether from external sources (insolation) or internal (mantle heating) will increase or decrease the likelihood of plate tectonics in viscoelastic-plastic models. Models with different modes of mantle heating (heat originating from the core-mantle boundary versus in-situ mantle heating) can produce dramatically different geodynamic regimes.<ref name=Dumoulin_etal_1999>Dumoulin, C.; Doin, M.-P.; Fleitout, L. (10 June 1999). "Heat transport in stagnant lid convection with temperature- and pressure-dependent Newtonian or non-Newtonian rheology". Journal of Geophysical Research 104: 12759–12777. doi:10.1029/1999JB900110. Retrieved 10 October 2014.</ref>

Most models simulate lithospheric plates with a viscoelastic-plastic rheology. In this simulation, plates deform [[Viscoelasticity|viscoelastically]] up to a threshold level of stress, at which point they deform in a [[Plasticity (physics)|plastic]] manner. The lithospheric [[yield stress]] is a function of pressure, stress, composition, but temperature has a disproportionate effect on it.<ref name=Moresi_solomatov_1998 /> Therefore, changes to the lithospheric temperature, whether from external sources (insolation) or internal (mantle heating) will increase or decrease the likelihood of plate tectonics in viscoelastic-plastic models. Models with different modes of mantle heating (heat originating from the core-mantle boundary versus in-situ mantle heating) can produce dramatically different geodynamic regimes.<ref name=Dumoulin_etal_1999>Dumoulin, C., M.-P. Doin, and L. Fleitout, L., 1999, Heat transport in stagnant lid convection with temperature- and pressure-dependent Newtonian or non-Newtonian rheology, Journal of Geophysical Research, vol. 104, pp. 12759–12777.</ref>

====Time-dependent versus quasi-steady states====

====Time-dependent versus quasi-steady states====