Figure F248. A. Microcrystalline basalt from Unit 1256D-95 showing intersertal texture with radiate domains (Thin Section 117; Sample 312-1256D-234R-1, 19–22 cm) (field of view = 1.2 mm; plane-polarized light). Constituent minerals are plagioclase and slightly pinkish clinopyroxene partially altered to brownish cryptocrystalline material. Note the contrast between the low degree of alteration of this sample and the much more extensive alteration of Unit 1256D-94. B. Same as A; cross-polarized light.
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