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Figure F24. Thin section photomicrographs of highly olivine-plagioclase-augite-phyric basalt from Unit XII. A, B. Sample 330-U1374A-24R-2W, 82–86 cm (Thin Section 167), showing partly resorbed phenocrysts: (A) plane-polarized light, (B) crossed polars. C, D. Sample 330-U1374A-24R-1W, 77–80 cm (Thin Section 158), showing a plagioclase phenocryst filled with interconnecting inclusions of dark glass (plane-polarized light). D is a close-up image of part of the plagioclase phenocryst in C.

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