Figure F25. A, B. Thin section photomicrographs of moderately olivine-augite-phyric basalt from Unit XIII (Sample 330-U1374A-30R-5W, 12–15 cm; Thin Section 173): (A) plane-polarized light, (B) crossed polars. C, D. Thin section photomicrographs of euhedral intergrowth of pyroxene and magnetite with characteristic hornblende outline from lithologic Unit 58 (Sample 330-U1374A-32R-4W, 2–5 cm; Thin Section 176): (C) plane-polarized light, (D) crossed polars.
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