Figure F65. Total alkalies vs. silica diagram (after Le Bas et al., 1986) illustrating the tholeiitic nature of Hole 1183A basalts. The dashed line separates Hawaiian tholeiitic and alkalic lavas (Macdonald and Katsura, 1964).

Figure F65. Total alkalies vs. silica diagram (after Le Bas et al., 1986) illustrating the tholeiitic nature of Hole 1183A basalts. The dashed line separates Hawaiian tholeiitic and alkalic lavas (Macdonald and Katsura, 1964).