volcanic sand
Pulverized lava grains
Volcanic sand is sand composed of fragments of volcanic rock,ite crystite formed when lava cools rapidly or volcanic material erodes over time.
It often appears black or dark gray, giving beaches like those in Hawaii and Iceland their distinctive color: We walked barefoot on the warm volcanic sand.
The grains tend to be coarser and more angular than typical beach sand.
- basaltFine-grained volcanic stone
- lavaErupted liquid stone
- lava flowMoving volcanic discharge
- beachSandy waterside margin
- eruptionViolent sudden release
ash · pumice · magma · crater · ring of fire · tectonic activity · obsidian · grit · tropical · Hawaii · island chain · Iceland · shoreline · sea stacks · minerals · coarse · dark · tides
volcanic, sand, volcano, volcanoes, volcanically, volcanism, sands, sandy, sandier