A fissure vent, also known as a volcanic fissure or eruption fissure, is a linear
Apr 21, 2009
Dec 22, 2014
Travel to a world of perpetual night--the deep ocean hydrothermal
Definition: steep, sub-volcanic tubes filled with fragments of both igneous rocks
and wall rocks.
Apr 13, 2010
Apr 12, 2016
Jan 10, 2012
n. pl. vol·ca·noes or vol·ca·nos. 1. a. An opening in the earth's crust from which lava, ash, and hot gases flow or are ejected during an eruption. b. A similar ...
Generic Volcano Features A
Apr 12, 2004