Volcanism

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Volcanism

Mountain range

Wikipedia articleDbpedia source

Volcanism (or Vulcanism or volcanicity) is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust or mantle of the body, to rise through the crust and form volcanic rocks on the surface. Magmas, that reach the surface and solidify, form extrusive landforms.

English Wikipedia http://en.wikipedia.org/wiki/Volcanism

Spanish wikipedia http://es.wikipedia.org/wiki/Vulcanismo

Wiki page external link http://www.nmnaturalhistory.org/pdf_files/NMvolcanoes.pdf https://web.archive.org/web/20070321022246/http:/www.nmnaturalhistory.org/pdf_files/NMvolcanoes.pdf http://www.d.umn.edu/~rmorton/ronshome/Volcanology/VolcanicGlossary.htm