Figure F166 (continued). F. Grain-size and compositional layering between a medium-grained olivine bearing gabbro and fine-grained gabbronorite (interval 305-U1309D-220R-3, 113–134 cm). Yellow box = location of H and I. G. Backside view of F. H. Medium-grained olivine gabbro surrounding a fine-grained gabbronorite (Sample 305-U1309D-220R-3, 123–125 cm) (plane-polarized light; FOV = 2 cm). I. Same as H; cross-polarized light. Yellow box = location of J. J. Boundary between medium-grained olivine-bearing gabbro and fine-grained gabbronorite (cross-polarized light; FOV = 11 mm).
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