MAGMA

Magma

Magma 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. 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 turn into a pluton. Magma is capable of intrusion into adjacent rocks, extrusion onto the surface as lava, and explosive ejection as tephra to form pyroclastic rock.

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magma

Noun

  1. The molten matter within the earth, the source of the material of lava flows, dikes of eruptive rocks, etc.
  2. A basic algebraic structure consisting of a set equipped with a single binary operation.


The above text is a snippet from Wiktionary: magma
and as such is available under the Creative Commons Attribution/Share-Alike License.

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