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doi:10.2204/iodp.pr.309.2005

Figure F42. Subtype of hyaloclastite consisting of basalt clasts and altered glassy clasts and glassy shards cemented by quartz, carbonate, and sulfide (mineralized volcanic breccia). A. Thin section (Sample 309-1256D-122R-1 [Piece 19, 140–142 cm]) (thin section 80). B. Spherulitic texture in cryptocrystalline basalt clasts of the hyaloclastite (Sample 309-1256D-122R-1 [Piece 16, 119–124 cm] (plane-polarized light, blue filter; field of view = 5 mm; thin section 78). Light spots are sulfides.