Figure 5
Schematic image of regional variation of seismic velocities, chemical composition of bridgmanite, and temperature variation at depth between 2000 and 2891 km.
(A) Red color indicate the anomaly of ΔVB > 0 > ΔVS. The map outline was made using CraftMAP (http://www.craftmap.box-i.net/). (B) The case of ΔT (difference from the average temperature) = 0. Fe and Al contents are the highest in the red regions. (C) The case of ΔAl/(Mg + Fe + Si + Al) = 0. Fe content is the highest in the red regions, where temperature is higher than the average temperature by 113 K. The map was colored based on ref. 6.
