Extended Data Fig. 3: Heat capacities of Mg3Al2Si3O12 pyrope (Gt) and the post-garnet phase (MgSiO3 bridgmanite (Brg) + Al2O3 corundum (Cor)).
From: Buoyancy of slabs and plumes enhanced by curved post-garnet phase boundary
The blue and red plots are proposed heat capacities of Gt and Brg+Cor, respectively, explaining the present post-garnet phase boundary. The blue and red curves are equations for the heat capacities of Gt38 and Brg+ Cor55,56, respectively, experimentally determined at room pressure. The dashed gray line is 3nR the limiting value of the Debye heat capacity (3nR, n: number of atoms and R: gas constant).
