A linear or arc-shaped chain of volcanic islands formed at a convergent plate boundary. The island arc is formed in the overriding plate from rising melt derived from the subducted plate and from the asthenosphere above that plate.
More specific than the term might appear. Island arcs are crescent-shaped aligned chains of volcanoes, formed above subduction zones.
A group of islands located on an oceanic plate that have a curving, arc-shaped pattern of distribution. The islands in an island arc are the result of convergent plate volcanism over a subduction zone.
A chain of volcanic islands. Island arcs are generally convex toward the open ocean. Example: the Aleutian Islands.
A line of volcanic islands found of the ocean that have been created by the convergence of two tectonic plates and the subsequent subduction of one of the plates beneath the other. Subduction cause magma plumes to rise to the Earth's surface creating the volcanic islands.
A chain of islands, e.g. the Aleutians, rising from the deep-sea floor and near to the continents; a primary arc expressed as a curved belt of islands. Its curve is generally toward the open ocean. According to Bucher (1965), an island-arc pattern results from shrinkage. This is a typical tension pattern which would result in the brittle crust by rotating a polar circumference into an equatorial circumference such as by sliding the Earth's crust on the interior. Syn: volcanic arc.
Complex of volcanic islands, and shallow seas adjacent to an oceanic trench. For example, Indonesia.
a curving series of volcanic islands that are created through the collision of tectonic plates in an ocean setting
a geographic feature formed by plate tectonics as one oceanic tectonic plate subducts ( subduction ) under another and is melted into magma by the intense heat
Arc of volcanic islands formed by the subduction of oceanic plates.
Chain of islands above a subduction zone (e.g., Japan, Aleutians).
An arc-shaped chain of volcanic islands produced where an oceanic plate is sinking ( subducting) beneath another.
a curved chain of islands that develops between an oceanic trench and a continental landmass.
a curved chain of volcanic islands rising from the deep-sea floor and near to a continent caused by subduction processes and occurring on the continent side of the subduction zone. Its curve generally is convex toward the open ocean.
A curved chain of islands, like the present Aleutians in Alaska, rising from the deep-sea floor and near to the continents. Its curve is generally convex toward the open ocean.
n. A curved chain of islands that rise from the sea floor, usually near a continent. The convex side usually faces the open ocean, while the concave side usually faces the continent, e.g., the Aleutian Islands in Alaska; volcanic arc- syn.
archipelago of volcanic islands built above a subduction zone or plane.
series of volcanic islands that are built above a subduction zone. | | | | | | | | | | N | O | | | | | | | X | Y | Z
A chain of volcanic islands situated close to a deep sea trench, formed by the collision of two oceanic plates (e.g. Aleutian Islands).
an arched chain of oceanic islands lying off the coast of a continent. The Aleutian Islands and the islands of the West Indies are island arcs. [AHDOS
The belief, supported by geological evidence, that the Superior Uplands were, in Precambrian times, an arc of offshore islands.
An island arc is a type of archipelago formed by plate tectonics as one oceanic tectonic plate subducts under another and produces magma. Island arcs that develop along the edges of a continent (for example, large parts of the Andes/ Central American/ Canadian mountain chain) may be known as a volcanic arc, though most people find the distinction of little benefit.