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Molten rock found beneath the surface of the Earth. Magma is mostly liquid rock but may contain crystals of various minerals or a dissolved liquid or gas. Magma may flow into existing rocks (intrusive) or flow out to the surface (extrusive). Magma temperatures typically range from 700 °C to 1300 °C (or 1300 °F to 2400 °F).

Synonyms and Related Terms

magma (Deut., Esp., Fr., It., Ned., Port.)

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