Question

Difference between intra oceanic arc and island arc

Answer 1

Intra oceanic arc - they are the simplest type of subduction system in that they occur where overriding plates of subduction zone consists of oceanic rocks contrasting with arc built on continental margin they comprise some 40% of the subduction margin of earth.

Island arc - Island arc are long chain of active volcanoes with intense sysmic activity found along convergent tectonic plates boundaries. most island arc are originats on oceanic crusts and have resulted from the descent of the lithosphere into the mantel along subduction zone. they are the principles way by which the continent growth is achieved.