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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.
Science wrestled with the ideas of the combustion of pyrite with water, that rock was solidified bitumen, and with notions of rock being formed from water . Of the volcanoes then known, all were near the water, hence the action of the sea upon the land was used to explain volcanism .
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)).
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 volcano erupted from 1983 to 2018 and is part of the Hawaiian–Emperor seamount chain. Mauna Loa is a large shield volcano. Its last eruption was in 2022 and it is part of the Hawaiian–Emperor seamount chain. Bowie Seamount is a dormant submarine volcano and part of the Kodiak-Bowie Seamount chain.
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 ...