Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin
The Nazca ridge subduction is recorded in the eastern side of the Peruvian Andes. Its topographic response is the Fitzcarrald Arch, which induces the foredeep-foreslope-foredeep N-S partitioning of the Amazonian foreland system. Using lithospheric analogue models we evidence that horizontal subducti...
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Format: | Doctoral or Postdoctoral Thesis |
Language: | French |
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HAL CCSD
2007
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Online Access: | https://theses.hal.science/tel-00204692 https://theses.hal.science/tel-00204692/document https://theses.hal.science/tel-00204692/file/These_complete_N._ESPURT.pdf |
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ftinsu:oai:HAL:tel-00204692v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
French |
topic |
Nazca Ridge Amazonian basin Flat subduction Low-temperature thermochronology Balanced cross-sections Analogue models Subandean Peru Modélisations analogiques Subandin Pérou Ride de Nazca Bassin amazonien Subduction horizontale Thermochronologie basse température Coupes équilibrées [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology |
spellingShingle |
Nazca Ridge Amazonian basin Flat subduction Low-temperature thermochronology Balanced cross-sections Analogue models Subandean Peru Modélisations analogiques Subandin Pérou Ride de Nazca Bassin amazonien Subduction horizontale Thermochronologie basse température Coupes équilibrées [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology Espurt, Nicolas Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin |
topic_facet |
Nazca Ridge Amazonian basin Flat subduction Low-temperature thermochronology Balanced cross-sections Analogue models Subandean Peru Modélisations analogiques Subandin Pérou Ride de Nazca Bassin amazonien Subduction horizontale Thermochronologie basse température Coupes équilibrées [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology |
description |
The Nazca ridge subduction is recorded in the eastern side of the Peruvian Andes. Its topographic response is the Fitzcarrald Arch, which induces the foredeep-foreslope-foredeep N-S partitioning of the Amazonian foreland system. Using lithospheric analogue models we evidence that horizontal subduction: i) requires the subduction of hundreds of kilometers of buoyant oceanic plateau; ii) increases the interplate friction and iii) induces uplift in the retro-lithosphere as a consequence of shortening and ridge underplating. In the Fitzcarrald Arch, the structural framework consists of two superimposed thrust-wedges. The lower wedge consists in the reactivation of a carboniferous thrust-wedge. The upper wedge is deformed by thin-skinned thrust tectonics. The structural evolution is controlled by the thickness of the paleozoic sedimentary pile involved in the thrust system. It is marked by a transfer-zone located at the northern border of a paleozoic basin. Apatite fission track analysis (AFT) allows us to determine an exhumation stage around 110 Ma linked to the opening of the South Atlantic Ocean. Since ~6Ma, AFT recorded the thrust propagation in the Camisea South of the transfer zone, where apatite thermochronometers have been reset. However, the underplating of the Nazca ridge had no influence on the short wavelength deformation of the Subandes. Les signatures de la subduction de la ride de Nazca s'expriment sur le flanc est des Andes péruviennes: l'Arche de Fitzcarrald en est la réponse topographique dans le bassin d'avant-pays amazonien. La subduction horizontale de la ride de Nazca perturbe la flexion de la lithosphère sud-américaine depuis ~4 Ma. Ce soulèvement est responsable de la configuration N-S actuelle, foredeep-foreslope-foredeep, du bassin amazonien. L'élaboration de modèles analogiques lithosphériques adaptés au contexte régional de l'étude a permis de comprendre les effets de la subduction d'un plateau océanique sur la plaque continentale chevauchante: i) le processus de la subduction ... |
author2 |
Laboratoire des Mécanismes et Transfert en Géologie (LMTG) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-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)-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-Centre National de la Recherche Scientifique (CNRS) Université Paul Sabatier - Toulouse III Patrice BABY Stéphane BRUSSET |
format |
Doctoral or Postdoctoral Thesis |
author |
Espurt, Nicolas |
author_facet |
Espurt, Nicolas |
author_sort |
Espurt, Nicolas |
title |
Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin |
title_short |
Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin |
title_full |
Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin |
title_fullStr |
Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin |
title_full_unstemmed |
Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin |
title_sort |
influence of the ridge subduction on the overriding plate dynamics: example of the nazca ridge and the amazonian basin |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://theses.hal.science/tel-00204692 https://theses.hal.science/tel-00204692/document https://theses.hal.science/tel-00204692/file/These_complete_N._ESPURT.pdf |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
https://theses.hal.science/tel-00204692 Géologie appliquée. Université Paul Sabatier - Toulouse III, 2007. Français. ⟨NNT : ⟩ |
op_relation |
tel-00204692 https://theses.hal.science/tel-00204692 https://theses.hal.science/tel-00204692/document https://theses.hal.science/tel-00204692/file/These_complete_N._ESPURT.pdf IRD: PAR00002912 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1785574752089276416 |
spelling |
ftinsu:oai:HAL:tel-00204692v1 2023-12-17T10:50:05+01:00 Influence of the ridge subduction on the overriding plate dynamics: example of the Nazca ridge and the Amazonian basin Influence de la subduction d'une ride asismique sur la dynamique de la plaque continentale chevauchante: exemple de la ride de Nazca et du bassin amazonien Espurt, Nicolas Laboratoire des Mécanismes et Transfert en Géologie (LMTG) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-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)-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-Centre National de la Recherche Scientifique (CNRS) Université Paul Sabatier - Toulouse III Patrice BABY Stéphane BRUSSET 2007-12-18 https://theses.hal.science/tel-00204692 https://theses.hal.science/tel-00204692/document https://theses.hal.science/tel-00204692/file/These_complete_N._ESPURT.pdf fr fre HAL CCSD tel-00204692 https://theses.hal.science/tel-00204692 https://theses.hal.science/tel-00204692/document https://theses.hal.science/tel-00204692/file/These_complete_N._ESPURT.pdf IRD: PAR00002912 info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-00204692 Géologie appliquée. Université Paul Sabatier - Toulouse III, 2007. Français. ⟨NNT : ⟩ Nazca Ridge Amazonian basin Flat subduction Low-temperature thermochronology Balanced cross-sections Analogue models Subandean Peru Modélisations analogiques Subandin Pérou Ride de Nazca Bassin amazonien Subduction horizontale Thermochronologie basse température Coupes équilibrées [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology info:eu-repo/semantics/doctoralThesis Theses 2007 ftinsu 2023-11-22T17:45:59Z The Nazca ridge subduction is recorded in the eastern side of the Peruvian Andes. Its topographic response is the Fitzcarrald Arch, which induces the foredeep-foreslope-foredeep N-S partitioning of the Amazonian foreland system. Using lithospheric analogue models we evidence that horizontal subduction: i) requires the subduction of hundreds of kilometers of buoyant oceanic plateau; ii) increases the interplate friction and iii) induces uplift in the retro-lithosphere as a consequence of shortening and ridge underplating. In the Fitzcarrald Arch, the structural framework consists of two superimposed thrust-wedges. The lower wedge consists in the reactivation of a carboniferous thrust-wedge. The upper wedge is deformed by thin-skinned thrust tectonics. The structural evolution is controlled by the thickness of the paleozoic sedimentary pile involved in the thrust system. It is marked by a transfer-zone located at the northern border of a paleozoic basin. Apatite fission track analysis (AFT) allows us to determine an exhumation stage around 110 Ma linked to the opening of the South Atlantic Ocean. Since ~6Ma, AFT recorded the thrust propagation in the Camisea South of the transfer zone, where apatite thermochronometers have been reset. However, the underplating of the Nazca ridge had no influence on the short wavelength deformation of the Subandes. Les signatures de la subduction de la ride de Nazca s'expriment sur le flanc est des Andes péruviennes: l'Arche de Fitzcarrald en est la réponse topographique dans le bassin d'avant-pays amazonien. La subduction horizontale de la ride de Nazca perturbe la flexion de la lithosphère sud-américaine depuis ~4 Ma. Ce soulèvement est responsable de la configuration N-S actuelle, foredeep-foreslope-foredeep, du bassin amazonien. L'élaboration de modèles analogiques lithosphériques adaptés au contexte régional de l'étude a permis de comprendre les effets de la subduction d'un plateau océanique sur la plaque continentale chevauchante: i) le processus de la subduction ... Doctoral or Postdoctoral Thesis South Atlantic Ocean Institut national des sciences de l'Univers: HAL-INSU |