Figure F10. Sandstone beds of variegated color and lithology in Unit VI. A. Coarse sandstone with abundant granules and pebbles (interval 183-1138A-73R-1, 18-34 cm). B. Drilling disturbed medium to coarse sandstone with pebbles and two brown silty clay beds (interval 183-1138A-73R-3, 38-64 cm).