Extended Data Fig. 5: Pressure dependence of the aggregate rheology.
From: Periclase deforms more slowly than bridgmanite under mantle conditions
The flow stress \({\widetilde{\sigma }}_{0}\) (blue line) for a bridgmanite (Bdm) – periclase (Per) aggregate (volume fraction of MgO: 0.25), is obtained with the POSO Self-Consistent scheme, for vacancy concentrations of 10−3 and 10−6 in bridgmanite and two oxygen diffusion coefficients for periclase (from Ita and Cohen14 and Yoo et al.40). Flow stresses of pure bridgmanite (red line) and pure periclase (black line) are also shown for comparison
