volcanic arc
noun
a curving chain of active volcanoes formed above a subduction zone and adjacent to a convergent plate boundary.
Words nearby volcanic arc
volatile salt,
volatility index,
volatilization,
volatilize,
volcanic,
volcanic arc,
volcanic ash,
volcanic bomb,
volcanic cone,
volcanic glass,
volcanic neck
Scientific definitions for volcanic arc
volcanic arc
[ vŏl-kăn′ĭk, 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.