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New page: thumb|300px|Small lava fountain erupts from a new vent on the flank of Pu`u `O`o spatter and cinder cone on the east rift zone of Kilauea Volcano, Hawai`i.''Vents''' are...
[[Image:Vent.jpg|thumb|300px|Small lava fountain erupts from a new vent on the flank of Pu`u `O`o spatter and cinder cone on the east rift zone of Kilauea Volcano, Hawai`i.]]''Vents''' are openings in the Earth's crust from which molten rock and volcanic gases escape onto the ground or into the atmosphere. Vents may consist of a single circular-shaped structure, a large elongate fissure and fracture, or a tiny ground crack. The release of volcanic gases and the eruption of molten rock will result in an assortment of constructional features ranging from enormous [[shield volcano]]es and [[caldera]]s to [[fumaroles]] and small rootless [[hornitos]].<ref>http://volcanoes.usgs.gov/Products/Pglossary/vent.html</ref>
==References==
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[[Category:Geology]]
==References==
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[[Category:Geology]]