Fig. 2: Creep rate modelling.
From: Periclase deforms more slowly than bridgmanite under mantle conditions
a, Creep strain rates as a function of applied stress of bridgmanite (Bdm; solid line) and periclase (Per; symbols) at 30 GPa (blue), 60 GPa (green), 90 GPa (red) and 120 GPa (magenta). b, Viscosity contrast \({\eta }_{{\rm{Per}}}/{\eta }_{{\rm{Bdm}}}\) (calculated at 10 MPa) between the two pure phases, periclase and bridgmanite, as a function of depth.
