Difference between revisions of "Cinder cone"
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[http://volcanoes.usgs.gov/Products/Pglossary/CinderCone.html USGS Photo Glossary] | [http://volcanoes.usgs.gov/Products/Pglossary/CinderCone.html USGS Photo Glossary] | ||
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Latest revision as of 22:12, July 14, 2007
A cinder cone is a steep, conical hill of volcanic fragments that accumulate around and downwind from a vent. The rock fragments, often called cinders or scoria, are glassy and contain numerous gas bubbles "frozen" into place as magma exploded into the air and then cooled quickly. Cinder cones range in size from tens to hundreds of meters tall.