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volcanic arc
noun
- a curving chain of active volcanoes formed above a subduction zone and adjacent to a convergent plate boundary.
volcanic arc
/ ±¹Å±ô-°ìă²Ô′İì,±¹Ã´±ô- /
- A curved chain of volcanoes in the overriding tectonic plate of a subduction zone. Volcanic arcs form as the result of rising magma formed by the melting of the downgoing plate. They are curved because of the curvature of the Earth. The Andes mountains form a volcanic arc.
- See also island arc
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Example Sentences
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Santorini lies on the Hellenic Volcanic Arc - a chain of islands created by volcanoes.
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Santorini is on what is known as the Hellenic Volcanic Arc - a chain of islands created by volcanoes - but the last major eruption was in the 1950s.
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Santorini is on what is known as the Hellenic Volcanic Arc but the last major eruption was in 1950.
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Shishaldin is one of the most active volcanoes in the Aleutian volcanic arc.
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The seamount is part of the Mariana Volcanic Arc, which is a chain of over 60 active volcanoes stretching over 600 miles west of and parallel to the Mariana Trench, the world’s deepest point.
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