Lava flowe on Hawaii. Lava is the extrusive equivalent o magma.

Magma (frae Auncient Greek μάγμα (mágma) meanin "thick unguent") is a mixtur o mouten or semi-mouten rock, volatiles an solids[1] that is foond aneath the surface o the Yird, an is expectit tae exeest on ither terrestrial planets an some naitural satellites.


  1. Spera, Frank J. (2000), "Physical Properties of Magma", in Sigurdsson, Haraldur (editor-in-chief) (ed.), Encyclopedia of Volcanoes, Academic Press, pp. 171–190, ISBN 978-0126431407