Juan Fernández Ridge

33°40′41″S 79°46′49″W / 33.67806°S 79.78028°W / -33.67806; -79.78028

The Juan Fernández Ridge is a volcanic island and seamount chain on the Nazca plate. It runs for about 800 km (500 mi) in a west–east direction from the Juan Fernández hotspot to the Peru–Chile Trench between the latitudes of 32-34° S before subducting beneath the South American plate near Valparaíso. The ridge forms a deep underwater corridor about 3,900 m (12,800 ft) below sea level, and was formed by upwelling of hot material from deep underground more than 22 million years ago. The ridge affects the geology of the region, and causes volcanic activity and earthquakes.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.