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volcanic arc
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noun
a curving chain of active volcanoes formed above a subduction zone and adjacent to a convergent plate boundary.
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Words nearby volcanic arc
volatility index, volatilization, volatilize, vol-au-vent, volcanic, volcanic arc, volcanic ash, volcanic bomb, volcanic cone, volcanic glass, volcaniclastic
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use volcanic arc in a sentence
Scientific definitions for volcanic arc
volcanic arc
[ vÅl-kÄ?nâ²Äk, vôl- ]
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.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.