A subduction zone, composed of the deep Aleutian Trench ... American Plate creating the Aleutian trench and volcanic island arc (Credit: Alaska Volcano Observatory). Click image for a larger ...

Subduction zones are an excellent place to ask such ... This process creates island arc volcanoes like those found in the Aleutians or elsewhere in the Pacific Ring of Fire. The magmatic rocks ...

Japan is an excellent example of a volcanic island arc with a forearc and backarc basin. As an oceanic plate sinks in a subduction zone, the sediment on that plate is scraped off and the sediment is ...

The Cascadia subduction zone, where the oceanic Juan de Fuca plate descends beneath the overlying North American plate, extends 1100 km from northern California to northern Vancouver Island.