Figure F15. Close-up photograph showing the only major siliceous tephra layer found at Site 1254 (interval 205-1254A-8R-8, 20-66 cm). The bed displays a reverse grading and has sharp contact with the overlying claystone.

Figure F15. Close-up photograph showing the only major siliceous tephra layer found at Site 1254 (interval 205-1254A-8R-8, 20-66 cm). The bed displays a reverse grading and has sharp contact with the overlying claystone.