Naked Science Forum

Non Life Sciences => Geology, Palaeontology & Archaeology => Topic started by: paul.fr on 14/05/2007 21:09:34

Title: Volcanoes
Post by: paul.fr on 14/05/2007 21:09:34

How are volcanoes formed? What is happening to make a volcanoe?

Title: Volcanoes
Post by: Bass on 14/05/2007 22:52:52

A volcano is formed when igneous material (molten, also called magma or lava) erupts at the surface of the earth.  Obviously this requires that molten rock be present in shallow levels of the crust- which requires a large heat source.  Almost all volcanoes are located either along plate boundaries or are underlain by hot-spots.

Title: Volcanoes
Post by: tony6789 on 15/05/2007 16:35:05

(for the simpletons) they are formed from hot stuff that comes form the ground and when the hot stuff isnt so hot anymore it turns very hard