A volcanic ridge system entering the South American subduction zone near central Chile, associated with the southern transition of the Pampean flat-slab region. Its crustal structure, hydration and past geometry constrain explanations of the slab dip; present-day bathymetry alone does not give the buoyancy of its already subducted continuation.
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Juan Fernández Ridge is an underwater mountain range located in the southeastern Pacific Ocean, specifically near the Juan Fernández Islands, which are part of Chile. The ridge is a significant geological feature that extends from the islands towards the continental shelf off the coast of South America. It plays an important role in the oceanography and ecology of the region, influencing ocean currents and marine biodiversity.