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This website is an educational resource that describes the science behind volcanoes and volcanic processes. The site is sponsored by NASA under the auspices of Project ALERT (Augmented Learning Environment and ... ERUPTION TYPES; Fissure; Hawaiian ; Strombolian; Vulcanian; Plinian; Hydrovolcanic; TEST YOURSELF...
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www.geology.sdsu.edu/how_volcanoes_work/
www.geology.sdsu.edu/how_volcanoes_work/
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Flood or Plateau Basalt (subtype of Fissure Volcanoes) ... Fissure volcanoes (or linear volcanoes) erupt from giant cracks (fissures) that open in the ground and expel vast quantities of extremely fluid lava (basalt) that spread far and wide to form huge pools that can cover almost everything around.
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whatonearth.olehnielsen.dk/volcanoes.asp
whatonearth.olehnielsen.dk/volcanoes.asp
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While those types of volcanoes do indeed exist, they represent only one; "species" in a veritable zoo of volcano shapes and sizes. Composite Volcanoes; Shield Volcanoes; Cinder Cones; Fissure Volcano; Fissure volcanoes have no central crater at all.
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www.dnr.sc.gov/geology/images/Volcanoes-pg.pdf
www.dnr.sc.gov/geology/images/Volcanoes-pg.pdf
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An eruption is the explosion of volcanic materials onto the surface, either from a central vent, a fissure, or a group of fissures. Volcanoes can erupt in any type of season. A volcano can even erupt in winter, but it usually is a dry eruption.
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www.scarborough.k12.me.us/wis/teachers/dtewhey/webquest...
www.scarborough.k12.me.us/wis/teachers/dtewhey/webquest/nature/volcanoes.htm
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In geology, a fissure is a fracture or crack in rock along which there is a distinct separation; fissures are often filled with mineral-bearing materials. On volcanoes, a fissure is an elongate fracture or crack at the surface from which lava erupts.
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volcanoes.usgs.gov/images/pglossary/fissure.php
volcanoes.usgs.gov/images/pglossary/fissure.php
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Divergent plate boundaries (also called rift zones) create a pathway for magma to rise up from the asthenosphere. However, although these boundaries can produce discrete; volcanoes, they often lead to fissure eruptions.
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www.uwsp.edu/geo/faculty/ozsvath/lectures/Volcanoes3.ht...
www.uwsp.edu/geo/faculty/ozsvath/lectures/Volcanoes3.htm
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Fissure volcanoes or monogenetic fields... have hundreds or thousands of vents. These volcanoes have no main pathway to expel their lava. The American Southwest, Mexico and the San Francisco volcanic fields, are examples of this type of volcano.
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www.strayreality.com/voluptuous_volcano_lands.htm
www.strayreality.com/voluptuous_volcano_lands.htm
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Today, fissure volcanoes are probably best seen in Iceland, which straddles the Mid-Atlantic Ridge. However, fissure volcanism on land is most associated with the past, with the great plateaux to be found on most continents.
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www.encarta.msn.co.uk/encyclopedia_781532756/Volcanism....
www.encarta.msn.co.uk/encyclopedia_781532756/Volcanism.html
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There are 550 known active volcanoes, with 500 million people living close to them. Up to two dozen of these could erupt at any moment.Fissure volcanoes are much more common than those of the central type. They occur along fractures in the crust and may extend for many kilometres.
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library.thinkquest.org/J0113247/web%20pages/volcanoes.h...
library.thinkquest.org/J0113247/web%20pages/volcanoes.htm
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