From A to H, light-gray pumice, black pumice, brown pumice, gray-banded pumice, black-and-white-banded pumice, white pumice, pink pumice, and obsidian-bearing pumice. I, J, and K show goose ...

The skeletons' final resting place, a bumpy bed of volcanic rock covered by pumice, provided a precise ... scalding explosions that left blue-black burn marks on the bone. Moisture from vaporized ...

The JMA collected rock specimens from the eruption on Aug. 22 using its maritime meteorological observation vessel in waters 300 km northwest of Fukutoku-Okanoba. A chunk of pumice volcanic rock ...