Figure F8. Digital image of very dark gray lithified tephra layer with an inclined, well-defined, sharp boundary at the bottom at ~49 cm (interval 344-U1381C-7H-2A, 1–55 cm). Grain sizes show gradation from fine sand at the base to medium silt toward the top. Smeared edges are caused by drilling disturbance.
Previous | Close | Next | Top of page