Lava Channels
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A lava channel is a stream of fluid
lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a Natural satellite, moon onto its surface. Lava may be erupted at a volcano or through a Fissure vent, fractu ...
contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not contain
levees A levee ( or ), dike (American English), dyke (British English; see spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural or artificial, alongside the banks of a river, often intended to protect against fl ...
per se, until the parental flow solidifies over what develops into the channel and creates natural levees. This initial levee allows for the building of a more complex levee and channel. As the lava flows through the channel, the elevation of the surface of the lava flow pulsates and lava can possibly flood the associated channel walls spilling out of the channel and over the existing levees, creating what is known as overflow levees. Overflow levees increase the height and width of the original levee. The lava that flows in lava channels is commonly
basaltic Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron ( mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90% ...
in composition.


In fiction

Lava channels are found throughout the 2002 video game '' The Elder Scrolls III: Morrowind'' under the Elvish name ''Foyadas'', which features them as important routes on the volcanic island of Vvardenfell used by the native Ashlanders during the dry season, before they are filled with lava again during times of volcanic activity.''The Elder Scrolls III: Morrowind'', 2002


See also

*
Lava tube A lava tube, more rarely called a pyroduct, is a 'roofed conduit through which molten lava travels away from its vent'. If lava in the tube drains out, it will leave an empty cave. Lava tubes are common in low-viscosity volcanic systems. La ...


References

*Ailsa Allaby and Michael Allaby. "lava channel." ''A Dictionary of Earth Sciences''. 1999. Retrieved June 27, 2011 fro
Encyclopedia.com
*Harris, A., M, Favalli., F, Mazzarini, C, Hamilton., 2008. Construction dynamics of a lava channel. Bulletin of Volcanology. 71. (4):459-474.


External links



Volcanism Volcanic landforms {{volcanism-stub