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caldera |
Also found in: Wikipedia, Hutchinson | 0.03 sec. |
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caldera: see crater caldera is a much larger crater, typically ranging from 3 to 18 mi (5–30 km) in diameter, and represents a considerable fraction of the volcano's basal diameter. In a few instances, however, tremendous volcanic eruptions have left calderas 50 mi (80 km) or so, such as that ..... Click the link for more information. . calderaLarge, bowl-shaped volcanic depression that forms when the top of a volcanic cone collapses into the space left after magma is ejected during a violent volcanic eruption. The term is Spanish for “caldron.” Subsequent minor eruptions may build small cones on the floor of the caldera which may still later fill up with water; an example is Crater Lake in Oregon. CalderaSee SCO. caldera [kal′der·ə] (geology) A large collapse depression at a volcano summit that is typically circular to slightly elongate in shape, with dimensions many times greater than any included vent. It ranges from a few miles to 37 miles (60 kilometers) in diameter. It may resemble a volcanic crater in form, but differs in that it is a collapse rather than a constructional feature. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In 2004, Nelson Baker learned of Nuinsco's (partially explored property) gold-in-till anomaly from his colleague Averill, who described the geology in Richardson Township similar to the volcanic caldera complex located in the Bousquet area of Quebec. Later, we concluded that little, dramatic Anemone was our favorite among the many geysers, hot springs and mud pots to be found inside the volcanic caldera of Yellowstone National Park, a 30-by-45-mile basin at the heart of the park. The property covers the centre of a volcanic caldera of apparently the same age as the nearby Santa Rosa-Tucari volcanic complex. |
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