Table 1

Parameters used for the computation of the density, the parameter A entering into the computation of viscosity and heat production of the ambient medium, white (felsic lithologies) and black (mafic lithologies) layers. Note that the viscosity pre-factor A (cf. Eq. 3) decreases with increasing viscosity. For absolute values of the corresponding viscosities, please refer to subsequent model figures. Parameters taken from Turcotte and Schubert (2014).