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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 .
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)
According to Hildreth (2007), Belknap Crater is a broad, low-angled shield volcano compared to other mafic (rich in magnesium and iron) volcanic cones. [7] Belknap's summit cone rises about 400 feet (120 m) above the base shield volcano, [8] and the volcano itself rises about 1,600 feet (490 m) above its surroundings. [9]
The largest volcanic landslides on Earth occur from submarine volcanoes and are several times larger than those that occur on land. Submarine landslides with volumes of 100–150 km 3 (24–36 cu mi) have occurred in the Canary Islands within the last 43 million years, but the largest submarine landslides could have been up to 900 km 3 (220 cu ...
Mount Alayta is an active shield volcano in the Afar Region of Ethiopia. It is part of the Afar Triangle (Afar Depression), a highly active volcanic region which includes the adjacent Mount Afdera. Mount Alayta covers an area of 2,700 square kilometers southwest of Lake Afrera. A chain of younger craters are aligned along a north-northwest axis ...
Most volcanic eruptions are confined to the caldera. Inside the caldera is a 400 metres (1,300 ft) high lava shield named Dolomieu. At the top of this lava shield are Bory Crater (Cratère Bory) and Dolomieu Crater (Cratère Dolomieu), which is by far the wider of the two and named for French geologist Déodat Gratet de Dolomieu.
Since low-viscosity magma is typically low in silica, shield volcanoes are more common in oceanic than continental settings. The Hawaiian volcanic chain is a series of shield cones, and they are common in Iceland, as well. [25] Olympus Mons, an extinct martian shield volcano is the largest known volcano in the Solar System. [26]
Shield volcanoes of the United States (2 C, 68 P) V. Shield volcanoes of Vanuatu (3 P) This page was last edited on 3 January 2016, at 16:38 (UTC). Text is ...