Figure F27. Thin section photomicrographs of vesicles. Each pair is shown under plane-polarized light and with crossed polars. A, B. Vesicle (moderately olivine-augite-phyric pillow basalt) lined with a thin layer of brown clay surrounding carbonates (Sample 330-U1376A-6R-3, 103–106 cm; Thin Section 251). C, D. Vesicles (moderately olivine-augite-phyric pillow basalt) filled with radial saponite along margins surrounding other clay minerals (Sample 330-U1376A-6R-2, 42–46 cm; Thin Section 250). E, F. Vesicle (highly olivine-augite-phyric pillow basalt) filled with radial saponite surrounding brown clay with radial habit (Sample 330-U1376A-5R-6, 97–99 cm; Thin Section 248).
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