Results for: Volcano

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Where do you get volcanoes and why?

Volcanos are openings in the Earth's crust that allows magma and other things to escape. They usually form at diverging and converging boundaries of tectonic plates, at points… (MORE)

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Skylla

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What type of volcano is the tambora volcano?

Tambora is a composite volcano (stratovolcano). A stratovolcano/composite volcano is explosive, usually creating large ash clouds, pyroclastic flows and can cause mass destruc… (MORE)

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Jake Weatherby

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Volcanoes that are quiet are what kind of volcanoes?

Quiet volcanoes can be either dormant or extinct. An extinct volcano, as you may have guessed, has not erupted for a very long period of time and will not erupt in the f… (MORE)

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Mbssports29

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What are volcanoes?

A volcano is : . An opening in the Earth's crust from which lava, ash, and hot gases flow or are ejected during an eruption. . A usually cone-shaped mountain formed by the m…aterials issuing from such an opening. Volcanoes are surficial manifestations of thermal processes occurring inside the Earth. They are basically vents out of which solid, liquid or gaseous material is spewed. Solid or semi-solid pyroclastic material includes blocks, bombs, lapilli and ash. Liquid material is usually viscous molten rock, or lava. Superheated gases that are ejected can mix with suspended particles to form a fast-moving "glowing cloud" or nuÃ©e ardente . Types of Volcanic Structures Volcanoes are usually associated with plate boundaries but can also occur within the interior areas of a tectonic plate. Their shape is directly related to the type of magma that flows from them-the more viscous the magma, the steeper the sides of the volcano. A volcano composed of gently sloping sheets of basaltic lava from successive volcanic eruptions is called a shield volcano . The lava flows associated with shield volcanos, such as Mauna Loa, on Hawaii, are very fluid. A volcano composed of steep, alternating layers of lava and pyroclastic materials, including ash, is called a stratovolcano . Stratovolcanos are associated with relatively viscous lava and with explosive eruptions. They are the most common form of large continental volcanos. Mount Vesuvius, Mount Fuji, and Mount St. Helens are stratovolcanos. A volcano is an opening in the crust of the Earth through which molten rock and gases from the interior of the Earth reach the surface. The definition of volcano can include the mountain like structures that may be created from the material ejected at the volcano. Volcanoes can be created by the melting of rock at divergent and convergent plate margins, and from decompression melting at hot spots in the mantle, such as the one under the Hawaiian Islands. A volcano is an opening, or rupture, in a planet's surface or crust , which allows hot, molten rock, ash, and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains or features like mountains over a period of time. Volcanoes are generally found where tectonic plates are diverging or converging . A mid-oceanic ridge , for example the Mid-Atlantic Ridge , has examples of volcanoes caused by " divergent tectonic plates " pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by " convergent tectonic plates " coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth's crust (called "non-hotspot intraplate volcanism"), such as in the African Rift Valley , the Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North America and the European Rhine Graben with its Eifel volcanoes. Volcanoes can be caused by " mantle plumes ". These so-called " hotspots " , for example at Hawaii , can occur far from plate boundaries. Hotspot volcanoes are also found elsewhere in the solar system , especially on rocky planets and moons. (MORE)

Lamoy Rowe-McIntosh

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Lucynineteen

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In Volcanoes

Mayon volcano is what type of volcano?

Mount Mayon, the Phillipines, is a stratovolcano, or a composite volcano. The lava erupted has a high silica content and high viscosity, and is mainly andesitic. Mount Mayon i… (MORE)

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Kirsti3

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In Volcanoes

Is it true that there is a volcano in England and were to is the volcano?

there is an xtinct volcano in the UK Edinburgh in Scotland is built on the core of an xtinct volcano it may still be live and maybe one day will cause a volcanic eruption but… (MORE)

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Paul Jones

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Owner of Jones Mineral Cabinet, Geology and Paleontology Supervisor, interested in Earth and Planetary sciences

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In Volcanoes

Where are volcanoes?

Volcanoes are located in many places on Earth. Many of them are found around the Ring of Fire which follows the rim of the Pacific Ocean in a huge subduction zone created by p… (MORE)

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In Volcanoes

What is volcano?

A volcano is an opening in Earth's crust molten rock and another materials escape onto Earth's surface.

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In Volcanoes

What type of volcano is the smith volcano?

The Smith Volcano is a large green cinder cone. The base is surrounded by large quantities of Smithian moss, contributing to the nomenclature of the said volcano. Local villag… (MORE)

Jake Weatherby

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In Volcanoes

Is Yellowstone volcano a dangerous volcano?

Potentially. While it produces extremely large super eruptions every few hundred thousand years, studies of the magma chamber indicate that it is unlikely a major eruption… (MORE)