What Is an Island Arc?

Answer

Island arc is a type of archipelago which consists of a chain of volcanoes whose alignment is arc shaped. Most island arcs are situated parallel and close to a boundary in the middle of two converging tectonic plates.
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4 Additional Answers
An island arc is a curving series of volcanic islands that are created through collision of tectonic plates in an ocean setting. They are yielded by a type of boundary plate called a subduction zone. This is formed when one lithospheric plate is forced downward under an upper plate.
An island arc is a chain of oceanic islands that may have been formed due to intense volcanic and seismic activity. The arcs consist of two parallel rows of islands, with the inner row bearing a string of explosive volcanoes. Examples of island arcs are Aleutian-Alaska arc and the Kuril-Kamchatka arc.
An island arc is a kind of archipelago that is formed when an oceanic tectonic plate subducts under another plate. The Aleutian Islands and Mariana Islands have an island arc. You can find more information here: http://en.wikipedia.org/wiki/Island_arc
What an island arc is a chain islands that are volcanic. Subduction of oceanic plates is what causes island arcs. The Aleutian Islands in Alaska are a prime example of an island arc. You can find more information here: http://www.windows.ucar.edu/tour/link=/earth/interior/island_formation.html&edu=elem
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