2.4 Andes Plate Margins: Island Arcs: Subduction of an Oceanic Plate beneath a Continental Plate The subduction of oceanic lithosphere gives rise to two different types of mountain belts.1). Where oceanic lithosphere subducts beneath an oceanic plate, an island arc …

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2.2 Subduction Zones: Deep Ocean Trenches and Volcanic Island Arcs To unravel the events that produce mountains, researchers examine ancient mountain structures as well as sites where orogenesis is currently active. Of particular interest are active subduction zones, where lithospheric …

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