Juan Fernández Ridge

Map of the volcanic arcs in the Andes and subducted structures affecting volcanism

The Juan Fernández Ridge is a volcanic island and seamount chain on the Nazca Plate. It runs in a west-east direction from the Juan Fernández hotspot to the Peru–Chile Trench at a latitude of 33° S near Valparaíso. The Juan Fernández Islands are the only seamounts that reach the surface.

References

von Huene, R.; Corvalán, J.; Flueh, E. R.; Hinz, K.; Korstgard, J.; Ranero, C. R.; Weinrebe, W. (1997), "Tectonic control of the subducting Juan Fernández Ridge on the Andean margin near Valparaiso, Chile", Tectonics, Wiley, 16 (3): 474–488, doi:10.1029/96TC03703

Geology of Chile

Terranes

Sedimentary
formations
and groups

Cretaceous	Baños del Flaco Fm. Cerro Colorado Fm. Coihaique Gp. Divisadero Gp. Hornitos Fm. Ñirehuao Fm. Quiriquina Fm. Viñita Fm. Way Gp. Zapata Fm.
Jurassic	Coihaique Gp. Ibáñez Fm. La Negra Fm. Nacientes del Biobío Fm. Nacientes del Teno Fm. Pan de Azúcar Fm. Tobífera Fm.
Triassic	Choiyoi Gp. Panguipulli Fm. Santa Juana Fm. Tralcán Fm.

Llano de Chocolate Beds

Batholiths

Metamorphic
complexes

Faults

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