Fig. 1From: Influence of composition-dependent thermal conductivity on the long-term evolution of primordial reservoirs in Earth's lower mantleHDprim = 1, a snapshots of non-dimensional superadiabatic temperature (top) and composition (bottom) fields at t = 4.5 Gyrs: from left to right KDprim varies from 1, 0.74, 0.5. b Averaged mantle temperatures as a function of time. c Surface and bottom heat flows as a function of timeBack to article page