Volcanic crater - Wikipedia
A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. [1] It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions , molten magma and volcanic gases rise from an underground magma chamber , through a conduit, until they reach the crater's vent, from where the ...
Volcanic Craters - U.S. National Park Service
A volcanic crater is a bowl- or funnel-shaped depression that usually lies directly above the vent from which volcanic material is ejected. Craters are commonly found at the summit of volcanic edifices, but they may form above satellite (flank) vents of composite and shield volcanoes.
About Volcanoes | U.S. Geological Survey - USGS.gov
Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt onto the Earth's surface. Volcanic eruptions can last days, months, or even years. What is a volcano? Redoubt volcano with minor ash eruption. Photograph taken during observation and gas data collection flight by AVO staff March 30, 2009.
What is a volcanic crater? Made SIMPLE - The geography teacher
A volcanic crater is a geological feature formed at the summit of a volcano during explosive eruptions or collapse events. It is typically a circular depression in the Earth’s surface, varying in size and depth depending on the volcanic activity.
Anatomy of a Volcano - U.S. National Park Service
Jul 5, 2023 · Volcanoes are both the vents where molten rock material and volcanic gases are erupted from within Earth’s interior, and the cones and mountains built up around those vents. But beyond this simple definition, volcanoes are incredibly diverse …
Yellowstone Caldera | Volcano type, Eruption, Size, Map, & Facts ...
Yellowstone 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 …
Crater - Wikipedia
A crater has classically been described as: "a bowl-shaped pit that is formed by a volcano, an explosion, or a meteorite impact". On Earth, craters are "generally the result of volcanic eruptions", while "meteorite impact craters are common on the Moon, but are rare on Earth".
Caldera: Crater Formed by Volcanic Collapse or Explosion - Geology.com
They are large volcanic craters that form by two different methods: 1) an explosive volcanic eruption; or, 2) collapse of surface rock into an empty magma chamber. The accompanying image is a satellite view of one of the most famous calderas - Crater Lake in Oregon.
Crater | volcanic, impact, formation | Britannica
Crater, circular depression in the surface of a planetary body. Most craters are the result of impacts of meteorites or of volcanic explosions. Meteorite craters are more common on the Moon and Mars and on other planets and natural satellites than on Earth, because most meteorites either burn up in.
Crater - Education | National Geographic Society
Apr 17, 2024 · A crater is a bowl-shaped depression, or hollowed-out area, produced by the impact of a meteorite, volcanic activity, or an explosion. Impact Craters. Craters produced by the collision of a meteorite with Earth (or another planet or moon) are called impact craters.