- Pancake dome
A pancake dome is an unusual type of
volcano found on the planet Venus. They are widely scattered on that planet and often form groups or clusters, though with smaller numbers of pancake domes in each group than is typical for the more commonshield volcano s. They are commonly found near coronae and "tesserae" (large regions of highly deformed terrain, folded and fractured in two or three dimensions, believed to be unique to Venus) in the lowland plains. Pancake domes are between 10 and 100 times larger than volcanic domes formed on Earth.Pancake domes have a broad, flat profile similar to shield volcanos and are thought to form from one large, slow eruption of viscous
silica -richlava . They usually have a central pit- or bowl-like feature similar to avolcanic crater , but it is thought that these pits form after the eruption as the lava cools and emits gas rather than being a vent from which the lava originated. The surface of pancake domes are covered with patterns of small cracks and faults.ee also
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Volcanism on Venus References
*cite web| url=http://volcano.und.edu/vwdocs/planet_volcano/venus/unusual.html| title=Unusual Volcanoes on Venus| publisher=Volcanoworld| accessdate=2006-10-26
*cite web| url=http://www2.jpl.nasa.gov/magellan/image15.html| title=Aine Corona with Pancake Domes|NASA
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