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Volcano - Wikipedia
A volcano is commonly defined as a vent or fissure 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. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and because … See more
The word volcano (UK: /vɒlˈkeɪnəʊ/; and US /vɔlˈkeɪnoʊ/) originates from the early 17th century, derived from the Italian vulcano, a volcanic island in the Aeolian Islands of … See more
The material that is expelled in a volcanic eruption can be classified into three types:
1. Volcanic gases, a mixture made mostly of steam, carbon dioxide, and a sulfur compound (either See moreAs of December 2022 , the Smithsonian Institution's Global Volcanism Program database of volcanic eruptions in the Holocene Epoch (the last 11,700 years) lists 9,901 confirmed eruptions from 859 volcanoes. The database also lists 1,113 uncertain eruptions … See more
According to the theory of plate tectonics, Earth's lithosphere, its rigid outer shell, is broken into sixteen larger and several smaller plates. These … See more
A volcano needs a reservoir of molten magma (e.g. a magma chamber), a conduit to allow magma to rise through the crust, and a vent to allow the magma to escape above the surface as lava. The erupted volcanic material (lava and tephra) that is deposited … See more
Eruption styles are broadly divided into magmatic, phreatomagmatic (hydrovolcanic), and phreatic eruptions. The intensity of … See more
The Decade Volcanoes are 16 volcanoes identified by the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) as being worthy of particular study in … See more
Wikipedia text under CC-BY-SA license Types of volcanic eruptions - Wikipedia
Several types of volcanic eruptions—during which material is expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of typ…
Wikipedia · Text under CC-BY-SA licenseVolcanism - Wikipedia
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]
Volcano - Simple English Wikipedia, the free …
Volcanoes [1] are formed by the movement of tectonic plates. The Earth's crust has 17 major, rigid tectonic plates. These float on a hotter, softer layer in its …
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Volcano | Definition, Types, & Facts
5 days ago · 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 …
Volcanic eruption | Description, History, …
Dec 16, 2024 · A volcanic eruption is an eruption of molten rock, hot rock fragments, and hot gases through a volcano, which is a vent in a planet’s or satellite’s crust. Volcanic eruptions can …
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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.
Volcanism | Examples, Effects, & Facts
Jan 16, 2025 · volcanism, any of various processes and phenomena associated with the surficial discharge of molten rock, pyroclastic fragments, or hot water and steam, including …
Volcanology - Wikipedia
Volcanology (also spelled vulcanology) is the study of volcanoes, lava, magma and related geological, geophysical and geochemical phenomena (volcanism). The term volcanology is derived from the Latin word vulcan. Vulcan was the …
What is a volcano?
A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape. Volcanic eruptions are partly driven by pressure from dissolved gas, much as escaping gases force the cork out of a bottle of champagne.
List of volcanic eruptions in the 21st century - Wikipedia
32 rows · This is a list of volcanic eruptions in the 21st century with a volcanic explosivity index (VEI) of 4 or higher, and smaller eruptions that resulted in fatalities, significant damage or …
Volcanoes and Volcanic Eruptions - Facts and Information
A volcano is a vent in Earth's surface where magma, gas, and ash escape. The name is also used for cones of erupted material at the vent. Volcanoes are found on many planets and moons in …
The world’s 10 most devastating volcanic eruptions
Volcanic eruptions have the power to destroy whole cities, alter global climate and devastate economies. They can produce rivers of molten lava, crushing mudflows, suffocating ash and …
Forged by fire: Volcanoes in Victoria May 16, 2017 The 10 most destructive tsunamis in history Dec 26, 2004 Volcano Eruption - Definition, Types and Causes - BYJU'S
Volcanoes are ruptures in the crust of our planet Earth that allow hot gases, molten lava and some rock fragments to erupt by opening and exposing the magma inside. In this piece of …
Volcanic field - Wikipedia
A volcanic field is an area of Earth's crust that is prone to localized volcanic activity. The type and number of volcanoes required to be called a "field" is not well-defined. [1] Volcanic fields …
Volcano Curse | Jujutsu Infinite Wiki - Fandom
The Volcano Curse can be fought in the Volcano Curse boss raid, story missions, and more. This boss is capable of dodging incoming attacks from the player, as well as dealing with additional …
Fissure vent - Wikipedia
A volcanic fissure and lava channel with lava fountain Channel of lava erupted during a fissure eruption of Kīlauea volcano, Hawaii, 2007 Eruption fissure with spatter cones, Holuhraun, …
Volcanic winter - Wikipedia
An explosive volcanic eruption releases magma materials in the form of volcanic ash and gases into the atmosphere. While most volcanic ash settles to the ground within a few weeks after …
Volcanic ash - Wikipedia
The types of minerals present in volcanic ash are dependent on the chemistry of the magma from which it erupted. Considering that the most abundant elements found in silicate magma are …
Volcanic plug - Wikipedia
An aerial view of the Gros Piton and Petit Piton, in St. Lucia, 2006.. A volcanic plug, also called a volcanic neck or lava neck, is a volcanic object created when magma hardens within a vent on …
Volcanic rock - Wikipedia
Volcanic rocks (often shortened to volcanics in scientific contexts) are rocks formed from lava erupted from a volcano. Like all rock types, the concept of volcanic rock is artificial, and in …
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