Figure F4. A. Jackstraw-textured plagioclase microlites in glassy groundmass from Sample 193-1189A-1R-1, 10 cm. Plane-polarized light, field of view = 0.7 mm. B. Resorbed plagioclase phenocrysts from Sample 193-1189B-6R-1, 36 cm. Cross-polarized light, field of view = 1.4 mm.