Figure F127. Thin section photomicrograph of zone 3 in the upper sill. Plagioclase laths are embedded in or penetrate the augite crystals (Sample 210-1276A-88R-3, 121-125 cm). A. Plane-polarized light. B. Cross-polarized light.

Figure F127. Thin section photomicrograph of zone 3 in the upper sill. Plagioclase laths are embedded in or penetrate the augite crystals (Sample 210-1276A-88R-3, 121-125 cm). A. Plane-polarized light. B. Cross-polarized light.