Figure F12. Photograph of potential biogenic alteration features within a hyaloclastite breccia, Site U1365. Altered basaltic glass with tubelike micro-scale weathering features (Sample 329-U1365E-8R-4, 3–6 cm; hyaloclastite breccia). Fe-Ox = iron oxyhydroxides. Plane-polarized light; 700× magnification.
Previous | Close | Next | Top of page