Figure F16. Photomicrographs showing plagioclase phenocrysts. G. Plagioclase-olivine glomerocrysts (Sample 197-1205A-29R-2, 55-58 cm) (cross-polarized light; field of view = 5 mm; photomicrograph 1205A-235). H. Highly embayed olivine phenocryst from Unit 21 (Sample 197-1205A-37R-5, 28-29 cm) (cross-polarized light; field of view = 5 mm; photomicrograph 1205A-257).