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A shield volcano is a type of volcano named for its low profile, resembling a shield lying on the ground. It is formed by the eruption of highly fluid (low viscosity ) lava , which travels farther and forms thinner flows than the more viscous lava erupted from a stratovolcano .
Unlike monogenetic volcanoes, polygenetic volcanoes reach massive sizes, such as Mauna Loa, which is the world's largest active volcano. Polygenetic volcanoes include stratovolcanoes , complex volcanoes , somma volcanoes , shield volcanoes and calderas .
A stratovolcano, also known as a composite volcano, is a typically conical volcano built up by many alternating layers of hardened lava and tephra. [1] Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and explosive eruptions. [2] Some have collapsed summit craters called calderas. [3]
Unlike shield volcanoes, they are characterized by a steep profile and periodic, often alternating, explosive eruptions and effusive eruptions. Some have collapsed craters called calderas . The central core of a stratocone is commonly dominated by a central core of intrusive rocks that range from around 500 meters (1,600 ft) to over several ...
Although the largest volcanoes like Mount St. Helens get the most attention, the Cascade Volcanic Arc includes a band of thousands of very small, short-lived volcanoes that have built a platform of lava and volcanic debris. Rising above this volcanic platform are a few strikingly large volcanoes that dominate the landscape. [1]
Largest volcano in Europe by area, [18] and includes the peaks Plomb du Cantal and Puy Mary. Most recent eruption occurred 2-3 MYA. Puy de Sancy, in Auvergne-Rhône-Alpes. Both the tallest mountain in the Massif Central and volcano in France. [19] Most recent eruption occurred 200 thousand years ago. Monts Dore; Mont Ross; Gallieni Massif
Within regions of volcanic activity, volcanic fields are clusters of volcanoes that share a common magma source. [3] Unlike a large volcano with satellite or subsidiary vents, a volcanic field's vents have their own source of magma, possibly of different compositions (such as basalt and rhyolite), and these vents may span an area of thousands ...
This list of shield volcanoes includes active, dormant and extinct shield volcanoes. Shield volcanoes are one of the three types [ specify ] of volcanoes. They have a short cone shape, and have basaltic lava which means the lava has low viscosity (viscosity is a measure of the ability for a liquid to flow)