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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 .
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]
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
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 .
The Cascade Arc includes nearly 20 major volcanoes, among a total of over 4,000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones, along with a few isolated examples of rarer volcanic forms such as tuyas. Volcanism in the arc began about 37 million years ago; however, most of the present ...
Mountain Metres Feet Location and Notes Ojos del Salado: 6,893: 22,615: Argentina/Chile – highest dormant volcano on Earth: Monte Pissis: 6,793: 22,287: Argentina Nevado Tres Cruces
This is a list of Cascade volcanoes, i.e. volcanoes formed as a result of subduction along the Cascadia subduction zone in the Pacific Northwest of North America. The volcanoes are listed from north to south, by province or state: British Columbia , Washington , Oregon , and California .
Level Mountain comprises two principal components: a voluminous basal shield volcano and an overlying eroded stratovolcano. [9] The lower, but more extensive basal shield volcano rises from an elevation of 900 to 1,400 metres (3,000 to 4,600 feet) above the surrounding forested lowlands much like an inverted dishware plate.