Skip to Main content Skip to Navigation
Journal articles

Coastal neotectonics in Southern Central Andes: uplift and deformation of marine terraces in Northern Chile (27°S)

Abstract : Neotectonic observations allow a new interpretation of the recent tectonic behaviour of the outer fore arc in the Caldera area, northern Chile (27°S). Two periods of deformation are distinguished, based on large-scale Neogene to Quaternary features of the westernmost part of the Coastal Cordillera: Late Miocene to Early Pliocene deformations, characterized by a weak NE SW to E W extension is followed by uppermost Pliocene NW SE to E W compression. The Middle Pleistocene to Recent time is characterized by vertical uplift and NW SE extension. These deformations provide clear indications of the occurrence of moderate to large earthquakes. Microseismic observations, however, indicate a lack of shallow crustal seismicity in coastal zone. We propose that both long-term brittle deformation and uplift are linked to the subduction seismic cycle.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-00770774
Contributor : Françoise Pinsard <>
Submitted on : Monday, January 7, 2013 - 2:50:58 PM
Last modification on : Wednesday, January 13, 2021 - 11:12:04 AM

Identifiers

Citation

Carlos Marquardt, Alain Lavenu, Luc Ortlieb, Estanislao Godoy, Diana Comte. Coastal neotectonics in Southern Central Andes: uplift and deformation of marine terraces in Northern Chile (27°S). Tectonophysics, Elsevier, 2004, 394, pp.193-219. ⟨10.1016/J.TECTO.2004.07.059⟩. ⟨hal-00770774⟩

Share

Metrics

Record views

180