Caldera - Wikipedia, the free encyclopedia
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A caldera is a cauldron-like volcanic feature usually formed by the collapse of land following a volcanic eruption such as the ones at Yellowstone National Park in the US and Glen Coe in Scotland. T...
en.wikipedia.org/wiki/Caldera
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Yellowstone Caldera - Wikipedia, the free encyclopedia
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The Yellowstone Caldera is the volcanic caldera in Yellowstone National Park in the United States. The caldera is located in the northwest corner of Wyoming, in which the vast majority of the park i...
en.wikipedia.org/wiki/Yellowstone_Caldera
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When a very large volume of magma is erupted, the overlying rocks may collapse. The collapse produces a hole or depression at the surface called a caldera.
http://wiki.answers.com/Q/How_is_a_caldera_formed
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A caldera is a collapse feature typically found on the summits of large volcanoes. Calderas form when magma is removed from deep within a volcano due to a large eruption or intrusion. When the magma is suddenly removed the summit of the volcano becomes partially unsupported.
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www.pmel.noaa.gov/vents/nemo/explorer/concepts/caldera....
www.pmel.noaa.gov/vents/nemo/explorer/concepts/caldera.html
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each eruption formed a caldera and extensive layers of thick pyroclastic-flow deposits. The youngest caldera is an elliptical depression, nearly 80 kilometers long and 50 kilometers wide, that occupies much of Yellowstone National Park.
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vulcan.wr.usgs.gov/Volcanoes/Yellowstone/description_ye...
vulcan.wr.usgs.gov/Volcanoes/Yellowstone/description_yellowstone.html
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Crater Lake Caldera, Oregon - Menu ... Crater Lake, Oregon, and the eruption of Mount Mazama -- formation of Crater Lake Caldera ... Fournaise Caldera (Piton de la Fournaise), Reunion Island, Indian Ocean - Menu -- Indian Ocean Menu...
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vulcan.wr.usgs.gov/Glossary/Caldera/framework.html
vulcan.wr.usgs.gov/Glossary/Caldera/framework.html
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This lake-filled caldera formed atop a former stratovolcano (note remnant of upper part of older cone at right center). The caldera formed about 1,100 years ago and is 2.5 km in diameter. The prominent peninsula and small island consists of lava domes erupted after the caldera formed.
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www.decadevolcano.net/photos/keywords/caldera.htm
www.decadevolcano.net/photos/keywords/caldera.htm
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So, armed with the awareness that the caldera could theoretically have formed over a protracted period of time, we now must evaluate all available evidence to see whether we can distinguish a single catastrophic event from a series of repeated smaller events.
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hvo.wr.usgs.gov/volcanowatch/1998/98_02_05.html
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We have this problem understanding how Kilauea's caldera formed. It wasn't by explosion, because no debris is piled around the caldera. It must have formed by collapse. And therein lies an unsolved mystery.
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hvo.wr.usgs.gov/volcanowatch/2004/04_04_01.html
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