Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S)
The Chile-Argentina Patagonian Cordillera is a natural laboratory to study the interactions between oceanic and continental lithosphere during the subduction of an active spreading ridge beneath a continent. Subduction of the South Chile spreading ridge, which separates the Nazca plate from the Anta...
Main Authors: | , , , , , , , |
---|---|
Other Authors: | , , , , , , , |
Format: | Book Part |
Language: | English |
Published: |
HAL CCSD
2009
|
Subjects: | |
Online Access: | https://hal.science/hal-00421053 https://doi.org/10.1007/978-3-540-87974-9_12 |
id |
ftunivnantes:oai:HAL:hal-00421053v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivnantes:oai:HAL:hal-00421053v1 2023-05-15T13:42:27+02:00 Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) Scalabrino, Bruno Lagabrielle, Yves Ruppelle (de La), A. Malavieille, Jacques Polve, M. Espinoza, Felipe Morata, Diego Suarez, Manuel Géosciences Montpellier Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Services communs OMP (UMS 831) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) S. Lallemand, F. Funiciello 2009-04-01 https://hal.science/hal-00421053 https://doi.org/10.1007/978-3-540-87974-9_12 en eng HAL CCSD Springer-Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-540-87974-9_12 hal-00421053 https://hal.science/hal-00421053 doi:10.1007/978-3-540-87974-9_12 Subduction Zone Geodynamics https://hal.science/hal-00421053 S. Lallemand, F. Funiciello. Subduction Zone Geodynamics, Springer-Verlag, pp.227-246, 2009, Frontiers in Earth Sciences, ⟨10.1007/978-3-540-87974-9_12⟩ Central Patagonia South Chile Ridge Subduction Cenozoic Geological records Compressional to extensional tectonics Geodynamic model [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/bookPart Book sections 2009 ftunivnantes https://doi.org/10.1007/978-3-540-87974-9_12 2023-02-22T00:32:18Z The Chile-Argentina Patagonian Cordillera is a natural laboratory to study the interactions between oceanic and continental lithosphere during the subduction of an active spreading ridge beneath a continent. Subduction of the South Chile spreading ridge, which separates the Nazca plate from the Antarctic plate, started around 15–14 Ma at the southern tip of Patagonia. Presently, the southernmost segment of the Chile Ridge enters the Peru-Chile trench at 46°S, at the site of the Chile Triple Junction (CTJ). We review the main events which occurred on land in the CTJ region (46–47°S), related with processes of ridge subduction. We summarize tectonic, sedimentary, and magmatic features in a 30 Ma-to Present chronological table. A preridge subduction stage, from 30 to 15 Ma, is characterized by the onset and growth of Patagonian relief and by a shift from marine to continental detrital sedimentation in the foreland at 20–22 Ma. The change from pre-ridge subduction to ridge subduction is marked on land by a transition from calc-alkaline to alkaline volcanism, at 14–12 Ma, and by the onset of eruption of very large fl ood basalt provinces (future volcanic plateaus) following rapid erosion of the eastern foreland belt. Post-plateau basaltic volcanism (<4 Ma) is coeval with a period of tectonic and morphological rejuvenation during which the eastern foreland of the Cordillera has been affected by extensional/transtensional tectonics. We place these events in the framework of a tectonomagmatic model involving the opening of slab windows due to both slab tear and ridge axis subduction. Book Part Antarc* Antarctic Université de Nantes: HAL-UNIV-NANTES Antarctic Argentina Chile Trench ENVELOPE(-75.760,-75.760,-53.123,-53.123) Patagonia The Antarctic 227 246 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Central Patagonia South Chile Ridge Subduction Cenozoic Geological records Compressional to extensional tectonics Geodynamic model [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Central Patagonia South Chile Ridge Subduction Cenozoic Geological records Compressional to extensional tectonics Geodynamic model [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes Scalabrino, Bruno Lagabrielle, Yves Ruppelle (de La), A. Malavieille, Jacques Polve, M. Espinoza, Felipe Morata, Diego Suarez, Manuel Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) |
topic_facet |
Central Patagonia South Chile Ridge Subduction Cenozoic Geological records Compressional to extensional tectonics Geodynamic model [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDE.MCG]Environmental Sciences/Global Changes |
description |
The Chile-Argentina Patagonian Cordillera is a natural laboratory to study the interactions between oceanic and continental lithosphere during the subduction of an active spreading ridge beneath a continent. Subduction of the South Chile spreading ridge, which separates the Nazca plate from the Antarctic plate, started around 15–14 Ma at the southern tip of Patagonia. Presently, the southernmost segment of the Chile Ridge enters the Peru-Chile trench at 46°S, at the site of the Chile Triple Junction (CTJ). We review the main events which occurred on land in the CTJ region (46–47°S), related with processes of ridge subduction. We summarize tectonic, sedimentary, and magmatic features in a 30 Ma-to Present chronological table. A preridge subduction stage, from 30 to 15 Ma, is characterized by the onset and growth of Patagonian relief and by a shift from marine to continental detrital sedimentation in the foreland at 20–22 Ma. The change from pre-ridge subduction to ridge subduction is marked on land by a transition from calc-alkaline to alkaline volcanism, at 14–12 Ma, and by the onset of eruption of very large fl ood basalt provinces (future volcanic plateaus) following rapid erosion of the eastern foreland belt. Post-plateau basaltic volcanism (<4 Ma) is coeval with a period of tectonic and morphological rejuvenation during which the eastern foreland of the Cordillera has been affected by extensional/transtensional tectonics. We place these events in the framework of a tectonomagmatic model involving the opening of slab windows due to both slab tear and ridge axis subduction. |
author2 |
Géosciences Montpellier Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Services communs OMP (UMS 831) Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) S. Lallemand, F. Funiciello |
format |
Book Part |
author |
Scalabrino, Bruno Lagabrielle, Yves Ruppelle (de La), A. Malavieille, Jacques Polve, M. Espinoza, Felipe Morata, Diego Suarez, Manuel |
author_facet |
Scalabrino, Bruno Lagabrielle, Yves Ruppelle (de La), A. Malavieille, Jacques Polve, M. Espinoza, Felipe Morata, Diego Suarez, Manuel |
author_sort |
Scalabrino, Bruno |
title |
Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) |
title_short |
Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) |
title_full |
Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) |
title_fullStr |
Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) |
title_full_unstemmed |
Subduction of an Active Spreading Ridge Beneath Southern South America: A Review of the Cenozoic Geological Records from the Andean Foreland, Central Patagonia (46–47°S) |
title_sort |
subduction of an active spreading ridge beneath southern south america: a review of the cenozoic geological records from the andean foreland, central patagonia (46–47°s) |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-00421053 https://doi.org/10.1007/978-3-540-87974-9_12 |
long_lat |
ENVELOPE(-75.760,-75.760,-53.123,-53.123) |
geographic |
Antarctic Argentina Chile Trench Patagonia The Antarctic |
geographic_facet |
Antarctic Argentina Chile Trench Patagonia The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Subduction Zone Geodynamics https://hal.science/hal-00421053 S. Lallemand, F. Funiciello. Subduction Zone Geodynamics, Springer-Verlag, pp.227-246, 2009, Frontiers in Earth Sciences, ⟨10.1007/978-3-540-87974-9_12⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-540-87974-9_12 hal-00421053 https://hal.science/hal-00421053 doi:10.1007/978-3-540-87974-9_12 |
op_doi |
https://doi.org/10.1007/978-3-540-87974-9_12 |
container_start_page |
227 |
op_container_end_page |
246 |
_version_ |
1766168058053787648 |