Lava Flow. Molten rock which flows down-slope from a volcanic vent, typically moving between a few metres to several tens of kilometres per hour (Material II - IDNDR, 1992) . 0.43
0
0
Ejecta. Material ejected from a volcano, including large fragments (bombs), cindery material (scoria), pebbles (lapilli) and fine particles (ash) (Material II - IDNDR, 1992) . 0.40