Figure F27. A. Close-up photograph of a medium-grained, myarolitic gabbro/diorite with a brown, near-vertical oxidation halo (interval 209-1272A-3R-1, 90–99 cm). B. Photomicrograph showing a highly differentiated melt pocket with oxide (o), biotite (bio), brown amphibole (ba), and secondary fibrous green amphibole (ga) (Sample 209-1272A-3R-1, 96–98 cm) (plane-polarized light: blue + gray + dark gray filters; field of view = 1.4 mm; image 1272A

Figure F27. A. Close-up photograph of a medium-grained, myarolitic gabbro/diorite with a brown, near-vertical oxidation halo (interval 209-1272A-3R-1, 90–99 cm). B. Photomicrograph showing a highly differentiated melt pocket with oxide (o), biotite (bio), brown amphibole (ba), and secondary fibrous green amphibole (ga) (Sample 209-1272A-3R-1, 96–98 cm) (plane-polarized light: blue + gray + dark gray filters; field of view = 1.4 mm; image 1272A_011).