Figure 8. Block diagram showing model parameterization and locations of cross sections (Figure 12). The 50 x 50 x 15 km blocks were used in upper 60 km; 100 x 100 km blocks increasing from 40 to 70 km in thickness with depth were used from 60 to 650 km. Dashed line marks the area shown in Figures 10, 11, 12, and 13.