Difference between revisions of "Volcanic dome"
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[http://volcanoes.usgs.gov/Products/Pglossary/LavaDome.html USGS Photo Glossary] | [http://volcanoes.usgs.gov/Products/Pglossary/LavaDome.html USGS Photo Glossary] | ||
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Latest revision as of 22:43, July 14, 2007
Volcanic domes are rounded, steep-sided mounds built by very viscous magma, usually either dacite or rhyolite. Such magmas are typically too viscous (resistant to flow) to move far from the vent before cooling and crystallizing. Domes may consist of one or more individual lava flows. Volcanic domes are also referred to as lava domes.