Figure F217. Grain-size changes in Unit 1256D-69 from (A) cryptocrystalline (Thin Section 8; Sample 312-1256D-175R-1, 58–62 cm) (field of view [FOV] = 4.8 mm; plane-polarized light) to (B) microcrystalline, radiate to intersertal (Thin Section 9; Sample 312-1256D-175R-1, 113–117 cm) (FOV = 4.8 mm; plane-polarized light). Both pieces were analyzed by ICP-AES on board. C. Radiate texture defined by clusters of fine-grained radiating plagioclase (Thin Section 10; Sample 312-1256D-176R-1, 8–12 cm) (FOV = 2.4 mm; plane-polarized light). D. Same as C; cross-polarized light.
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