Figure F21. Interval 192-1185B-3R-2, 33-54 cm, showing pervasively altered spherulitic basalt near a pillow margin with light and dark yellow-brown colors. Completely altered olivine phenocrysts are visible at the centers of most of the spherulites. Spherulites are highlighted by Fe oxyhydroxide alteration; the extent of alteration increases away from the pillow margin. The black aphanitic margin of the pillow is visible (bottom left).

Figure F21. Interval 192-1185B-3R-2, 33-54 cm, showing pervasively altered spherulitic basalt near a pillow margin with light and dark yellow-brown colors. Completely altered olivine phenocrysts are visible at the centers of most of the spherulites. Spherulites are highlighted by Fe oxyhydroxide alteration; the extent of alteration increases away from the pillow margin. The black aphanitic margin of the pillow is visible (bottom left).