Volcanic Activity

Lava fountains (10 m high) spouting from eruptive fissures during the October 1980 eruption of Krafla Volcano. (Photograph by Gudmundur E. Sigvaldason, Nordic Volcanological Institute, Reykjavik, Iceland.) http://pubs.usgs.gov/gip/dynamic/Krafla.html

Volcanic activity on the Earth occurs mainly along the junctions of the great plates of the Earth's lithosphere.

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