Changes

[[Image:OkmokCaldera.jpg|300px|thumb|Okmok Caldera, in the Aluetian Islands]]

[[Image:OkmokCaldera.jpg|300px|thumb|Okmok Caldera, in the Aleutian Islands]]

A '''caldera''' is a large, circular depression that is formed by the collapse of the [[volcano|volcanic]] cone after a large eruption.  Caldera differ from [[crater|craters]] in that they are larger, and craters are caused rock removal during an eruption.

A '''caldera''' is a large, circular depression that is formed by the collapse of the [[volcano|volcanic]] cone after a large eruption.  Caldera differ from [[crater|craters]] in that they are larger, and craters are caused rock removal during an eruption.

== Examples of Caldera in the United States ==

== Examples of Caldera in the United States ==

[[Crater Lake]] - [[Oregon]]

[[Crater Lake]] - [[Oregon]]

== References ==

== References ==

[http://volcanoes.usgs.gov/Products/Pglossary/caldera.html USGS Photo Glossary of Volcanic Terms]

[http://volcanoes.usgs.gov/Products/Pglossary/caldera.html USGS Photo Glossary of Volcanic Terms]

[http://pubs.usgs.gov/gip/volcus/ustext.html USGS - Volcanoes of the United States]

[http://pubs.usgs.gov/gip/volcus/ustext.html USGS - Volcanoes of the United States]

[[Category:Geology]]

[[Category:Vulcanology]]