Figure F13. Digital images of tephras. A. Slightly consolidated, normally graded brown tephra layer with brownish glass shards at 19–28 cm (interval 344-U1414A-12H-1A, 13–33 cm). B. Disseminated black tephra horizon predominantly made of transparent glass shards with pyrite as alteration product (interval 344-U1414A-24X-3A, 21–37 cm).
Previous | Close | Next | Top of page