Lava fountain
This is an old revision of this page, as edited by SharonS (talk | contribs) at 18:47, June 22, 2007. It may differ significantly from current revision.
A jet of lava sprayed into the air by the rapid formation and expansion of gas bubbles in the molten rock is called a lava fountain. Lava fountains typically range from about 10 to 100 m in height, but occasionally reach more than 500 m. Lava fountains erupt from isolated vents, along fissures, within active lava lakes, and from a lava tube when water gains access to the tube in a confined space.