Figure F223. Textures in cryptocrystalline basalt from Unit 1256D-74. A. Variolitic texture (Thin Section 22; Sample 312-1256D-182R-1, 25–28 cm) (field of view [FOV] = 0.6 mm; plane-polarized light). Note the abundant tiny oxide grains. B. Same as A; cross-polarized light. C. Plagioclase microphenocrysts in partially flow-oriented hypocrystalline groundmass (Thin Section 24; Sample 312-1256D-184R-1, 100–104 cm) (FOV = 4.8 mm; plane-polarized light).
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