Figure F20. Sample 173-1069A-7R-2, 82 cm. A. Rounded altered microlitic volcanic fragment (plane-polarized light). B. Relict vesicular pumice textures (plane-polarized light). C. Relict vesicular pumice textures (cross-polarized light).

Figure F20. Sample 173-1069A-7R-2, 82 cm. A. Rounded altered microlitic volcanic fragment (plane-polarized light). B. Relict vesicular pumice textures (plane-polarized light). C. Relict vesicular pumice textures (cross-polarized light).