Caldera - Wikipedia
WEBMount Mazama's eruption timeline, an example of caldera formation. A caldera (/ k ɔː l ˈ d ɛr ə, k æ l-/ kawl-DERR-ə, kal-) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. An eruption that ejects large volumes of magma over a short period of time can cause significant ...
Calderas - National Geographic Society
WEBOct 19, 2023 · A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption , magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.
Types of Calderas - National Geographic Society
WEBApr 30, 2024 · Vocabulary. A caldera is a depression created after a volcano releases the majority of the contents of its magma chamber in an explosive eruption. Without any structural support below, the land around the erupting volcanic vent or vents collapses inwardly, creating the bowl-shaped caldera.
Caldera: Crater Formed by Volcanic Collapse or Explosion
WEBEarth Science Records: Highest mountain, deepest lake, biggest tsunami and more. Diamonds: Learn about the properties of diamond, its many uses, and diamond discoveries. Calderas are massive craters located at the sites of enormous volcanic eruptions. They can form by collapse or by an explosive blast.
Caldera | Volcanic, Formation, Crater | Britannica
WEBApr 25, 2024 · Caldera, large bowl-shaped volcanic depression more than one kilometre in diameter and rimmed by infacing scarps. Calderas usually, if not always, form by the collapse of the top of a volcanic cone or group of cones because of removal of the support formerly furnished by an underlying body of magma.
Yellowstone Caldera | Volcano type, Eruption, Size, Map, & Facts
WEBYellowstone Caldera, enormous crater in the western-central portion of Yellowstone National Park, northwestern Wyoming, that was formed by a cataclysmic volcanic eruption some 640,000 years ago. It measures approximately 30 by 45 miles (50 by 70 km), covering a large area of the park.
Volcano - Calderas, Magma, Eruptions | Britannica
WEBWhether a volcano is designated a caldera, shield volcano, or stratovolcano with a caldera depends on the principal landform feature. For example, Crater Lake in Oregon in the northwestern United States is designated a caldera, but Kilauea in Hawaii is designated a shield volcano even though it has a large summit caldera.
Calderas - U.S. National Park Service
WEBApr 17, 2023 · Nonexplosive calderas form on the summit of shield volcanoes during especially large eruptions of lava flows at either the summit or along flank rift zones. Calderas are large, generally with a diameter greater than 0.6 miles (1 km). The largest calderas are tens of miles (kms) wide.
Valles Caldera | U.S. Geological Survey - USGS.gov
WEBValles caldera is located in north-central New Mexico in the central Jemez Mountains west of Santa Fe. It is the oldest of three young caldera-type volcanoes in the United States; the other two are Yellowstone in Wyoming and Long Valley in California.
Caldera Collapse Increases the Size and Duration of Volcanic ... - NASA
WEBMay 10, 2021 · “During a caldera collapse, a massive block of rock near the top of the volcano slides down into the volcano. As it slides, gets stuck on the jagged walls around it, and slides some more, the block of rock squeezes out …
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