lava

Encyclopedia Article

Article

Magma, or molten rock, rising in liquid form onto the earth's surface, usually by volcanic eruption. The term also applies to the solidified rock that is formed once molten lava has cooled.

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"Pahoehoe and Aa lava flows at the Big Island of Hawaii, September 25, 2014" by Brocken Inaglory is licensed under CC BY-SA.

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