Figure AF3. A. Oikocryst of clinopyroxene enclosing plagioclase chadacrysts typical of dark domains in gabbro from Unit 1256D-85 and elsewhere (Thin Section 64; Sample 312-1256D-214R-2, 50–51 cm) (field of view [FOV] = 4.8 mm; cross-polarized light) B. Relict clinopyroxene (large area in lower left quadrant with bright interference colors in C) separated by a symplectitic quartz-plagioclase intergrowth from relict hornblende that has been altered to actinolite (dark greenish area along upper right margin) (Thin Section 71; Sample 312-1256D-215R-1, 84–88 cm) (FOV = 2.4 mm; plane-polarized light). C. Same as B; cross-polarized light. D. Primary hornblende basal section within disseminated oxide gabbro from network domain of Unit 1256D-85 (Thin Section 71; Sample 312-1256D-215R-1, 84–88 cm) (FOV = 1.2 mm; plane-polarized light). E. Orthopyroxene-bearing disseminated oxide gabbro (Thin Section 70; Sample 312-1256D-215R-1, 10–14 cm) (FOV = 2.5 mm; plane-polarized light). Clinopyroxene oikocrysts (two close to right margin; one left margin below center) with small plagioclase chadacrysts appear as subspherical dark domains. Large oikocryst at lower right has a marked corona of hornblende altered to actinolite. Coarser-grained network domains between oikocrysts appear as a network of lighter colored material in hand specimen.
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