Volcano - Wikipedia
WEBSabancaya volcano erupting, Peru in 2017. A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
Volcano - Simple English Wikipedia, the free encyclopedia
WEBA volcano is a mountain that has lava (hot, liquid rock) coming out from a magma chamber under the ground, or did have in the past. Volcanoes [1] are formed by the movement of tectonic plates . The Earth's crust has 17 major, rigid tectonic plates .
Volcano | Definition, Types, & Facts | Britannica
WEBMay 13, 2024 · volcano, vent in the crust of Earth or another planet or satellite, from which issue eruptions of molten rock, hot rock fragments, and hot gases. A volcanic eruption is an awesome display of Earth’s power.
Types of volcanic eruptions - Wikipedia
WEBThere are three main types of volcanic eruption: Magmatic eruptions are the most well-observed type of eruption. They involve the decompression of gas within magma that propels it forward. Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma.
Volcanism - Wikipedia
WEBEventually the material erupted forms a vertical plume because of its buoyancy in the Earth’s atmosphere. Volcanism, vulcanism, volcanicity, or volcanic activity is the phenomenon where solids, liquids, gases, and their mixtures erupt to the surface of a solid-surface astronomical body such as a planet or a moon. [1]
Lists of volcanoes - Wikipedia
WEBLists of volcanoes. Map of Earth's plate boundaries and active volcanoes. More detailed map showing volcanoes active in the last 1 million years. These lists cover volcanoes by type and by location.
Active volcano - Wikipedia
WEBAn active volcano is a volcano that has erupted during the Holocene (the current geologic epoch that began approximately 11,700 years ago), is currently erupting, or has the potential to erupt in the future.
Yellowstone Caldera - Wikipedia
WEBThe Yellowstone Caldera, sometimes referred to as the Yellowstone Supervolcano, is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States. The caldera and most of the park are located in the northwest corner of the state of Wyoming. The caldera measures 43 by 28 miles (70 by 45 kilometers), and postcaldera ...
Volcanoes - National Geographic Society
WEBOct 19, 2023 · A volcano is an opening in a planet or moon’s crust through which molten rock, hot gases, and other materials erupt. Volcanoes often form a hill or mountain as layers of rock and ash build up from repeated eruptions. Volcanoes are classified as active, dormant, or extinct.
Mud volcano - Wikipedia
WEBMud volcano in Htee Pwint Kan Umbrella Pond ( Myanmar) Hydrate-bearing sediments, which often are associated with mud volcano activity. Source: USGS, 1996. A mud volcano or mud dome is a landform created by the eruption of mud or slurries, water and gases. [1] [2] [3] Several geological processes may cause the formation of mud volcanoes.
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