<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2010) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (November 2010) (Learn how and when to remove this template message) </Td> </Tr> <P> Magma (from Ancient Greek μάγμα (mágma) meaning "thick unguent") is a mixture of molten or semi-molten rock, volatiles and solids that is found beneath the surface of the Earth, and is expected to exist on other terrestrial planets and some natural satellites . Besides molten rock, magma may also contain suspended crystals, dissolved gas and sometimes gas bubbles . Magma often collects in magma chambers that may feed a volcano or solidify underground to form an intrusion . Magma is capable of intruding into adjacent rocks (forming igneous dikes and sills), extrusion onto the surface as lava, and explosive ejection as tephra, or fragmented rock, to form pyroclastic rock . </P> <P> Magma is a complex high - temperature fluid substance . Temperatures of most magmas are in the range 700 ° C to 1300 ° C (or 1300 ° F to 2400 ° F), but very rare carbonatite magmas may be as cool as 600 ° C, and komatiite magmas may have been as hot as 1600 ° C. Most magmas are silicate mixtures . </P>

What is melted rock (magma) called when it reaches the earth's surface