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Augustine Volcano (Alaska) during its eruptive phase on January 24, 2006. 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.
The United States Geological Survey National Volcanic Threat Assessment is a report containing a ranked list of active volcanoes in the United States posing hazardous risks to the American population. [1] The report was published by the United States Geological Survey in 2005 [2] and revised in 2018. [3]
Articles about non-igneous volcanoes (e.g. asphalt volcanoes, mud volcanoes, cryovolcanoes) are certainly within the scope of the project, as are articles about volcanoes on other planets and moons (or the space objects themselves if volcanism is a significant part of their history, for example Io (moon)).
This page is an up-to-date listing of all of the Featured and Good articles within the scope of this project, and of the featured and valued pictures. Aka, the bragsheet. When you update featured pictures or former featured pictures to this page, be sure to update the counter (click on "edit" to see what that means), because that is the number ...
Volcanoes known to have Surtseyan activity include: Surtsey, Iceland. The volcano built itself up from depth and emerged above the Atlantic Ocean off the coast of Iceland in 1963. Initial hydrovolcanics were highly explosive, but as the volcano grew, rising lava interacted less with water and more with air, until finally Surtseyan activity ...
The article is about a very important topic in volcanology, or a very important and noted volcano. Any volcano with eruptions that have killed numerous people or produced large-scale environmental consequences (i.e. most VEI 6+ eruptions) should be no lower than this level. Moderately-important types of volcanoes should be here.
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]
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 nature volcanic rocks grade into hypabyssal and metamorphic rocks and constitute an important element of some sediments and sedimentary rocks. For these ...