Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics
This work is focused on basin formation and evolution in the Argentinean South Atlantic Margin and the Mesozoic breakup of SW Gondwana. Rifting evolution was studied in the Malvinas and Colorado/Salado basins. Three superimposed rifting events were identified in the latter. The first rifting event i...
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Online Access: | https://theses.hal.science/tel-03126562 https://theses.hal.science/tel-03126562/document https://theses.hal.science/tel-03126562/file/2018SORUS506.pdf |
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ftifpen:oai:HAL:tel-03126562v1 2024-06-23T07:56:48+00:00 Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics Estratigrafía sísmica de las cuencas costa afuera de Argentina : caracterización y modelado de la dinámica de los márgenes pasivos del Atlántico Sur Stratigraphie sismique des bassins offshore de l'Argentine : caractérisation et modélisation de la dynamique des marges passives de l'Atlantique Sud Lovecchio, Juan Pablo IFP Energies nouvelles (IFPEN) Sorbonne Université Universidad de Buenos Aires Philippe Joseph Victor A. Ramos 2018-12-10 https://theses.hal.science/tel-03126562 https://theses.hal.science/tel-03126562/document https://theses.hal.science/tel-03126562/file/2018SORUS506.pdf en eng HAL CCSD NNT: 2018SORUS506 tel-03126562 https://theses.hal.science/tel-03126562 https://theses.hal.science/tel-03126562/document https://theses.hal.science/tel-03126562/file/2018SORUS506.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-03126562 Earth Sciences. Sorbonne Université; Universidad de Buenos Aires, 2018. English. ⟨NNT : 2018SORUS506⟩ Rifting Gondwana Atlantic Mésozoïque Atlantique Argentine Modélisation Colorado Malvinas [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/doctoralThesis Theses 2018 ftifpen 2024-05-27T23:52:44Z This work is focused on basin formation and evolution in the Argentinean South Atlantic Margin and the Mesozoic breakup of SW Gondwana. Rifting evolution was studied in the Malvinas and Colorado/Salado basins. Three superimposed rifting events were identified in the latter. The first rifting event is associated with the Late Triassic extensional reactivation of Late Paleozoic thrusts of the Ventania-Cape fold belt. A second and main rifting stage (Early-Middle Jurassic) is related to faults forming the main depocenters and intersecting the older structures. Finally, Early Cretaceous extension linked to the opening of the South Atlantic Ocean focused on the outer continental fringe and produced emplacement of SDRs. The rifting evolution of the Malvinas basin was seismically characterized. New zircon U-Pb ages constrain rifting in the Jurassic. A new model for Gondwana breakup is presented with focus on the evolution of the Mesozoic peri-Atlantic basins. The post-breakup evolution of the Argentinean South Atlantic margin was also studied via seismic interpretation and stratigraphic characterization. Three stages of drift evolution were identified. After the Hauterivian/Barremian breakup, the Cretaceous drift unit is conditioned by the thermal subsidence over the main depocenters. Only after the Maastrichtian-Danian regional transgression, the margin becomes a single continental platform. The Paleogene drift stage is characterized by subsidence and sedimentary input centered in the Salado area, while the Neogene drift stage is characterized by a cylindrical behavior and the remarkable influence of contour currents. Ce mémoire traite de la formation et de l'évolution des bassins de la marge Atlantique argentine. Trois stades de rifting superposés ont été identifiés dans les bassins des Malvinas et de Colorado/Salado. Le premier événement de rifting est associé à la réactivation extensive, durant le Trias tardif, des chevauchements paléozoïques de la phase de Ventania-Cape. Un deuxième stade de rifting (Jurassique ... Doctoral or Postdoctoral Thesis South Atlantic Ocean IFP Énergies nouvelles: HAL-IFPEN Afuera ENVELOPE(-61.833,-61.833,-63.750,-63.750) Argentina Argentine |
institution |
Open Polar |
collection |
IFP Énergies nouvelles: HAL-IFPEN |
op_collection_id |
ftifpen |
language |
English |
topic |
Rifting Gondwana Atlantic Mésozoïque Atlantique Argentine Modélisation Colorado Malvinas [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Rifting Gondwana Atlantic Mésozoïque Atlantique Argentine Modélisation Colorado Malvinas [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Lovecchio, Juan Pablo Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics |
topic_facet |
Rifting Gondwana Atlantic Mésozoïque Atlantique Argentine Modélisation Colorado Malvinas [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
This work is focused on basin formation and evolution in the Argentinean South Atlantic Margin and the Mesozoic breakup of SW Gondwana. Rifting evolution was studied in the Malvinas and Colorado/Salado basins. Three superimposed rifting events were identified in the latter. The first rifting event is associated with the Late Triassic extensional reactivation of Late Paleozoic thrusts of the Ventania-Cape fold belt. A second and main rifting stage (Early-Middle Jurassic) is related to faults forming the main depocenters and intersecting the older structures. Finally, Early Cretaceous extension linked to the opening of the South Atlantic Ocean focused on the outer continental fringe and produced emplacement of SDRs. The rifting evolution of the Malvinas basin was seismically characterized. New zircon U-Pb ages constrain rifting in the Jurassic. A new model for Gondwana breakup is presented with focus on the evolution of the Mesozoic peri-Atlantic basins. The post-breakup evolution of the Argentinean South Atlantic margin was also studied via seismic interpretation and stratigraphic characterization. Three stages of drift evolution were identified. After the Hauterivian/Barremian breakup, the Cretaceous drift unit is conditioned by the thermal subsidence over the main depocenters. Only after the Maastrichtian-Danian regional transgression, the margin becomes a single continental platform. The Paleogene drift stage is characterized by subsidence and sedimentary input centered in the Salado area, while the Neogene drift stage is characterized by a cylindrical behavior and the remarkable influence of contour currents. Ce mémoire traite de la formation et de l'évolution des bassins de la marge Atlantique argentine. Trois stades de rifting superposés ont été identifiés dans les bassins des Malvinas et de Colorado/Salado. Le premier événement de rifting est associé à la réactivation extensive, durant le Trias tardif, des chevauchements paléozoïques de la phase de Ventania-Cape. Un deuxième stade de rifting (Jurassique ... |
author2 |
IFP Energies nouvelles (IFPEN) Sorbonne Université Universidad de Buenos Aires Philippe Joseph Victor A. Ramos |
format |
Doctoral or Postdoctoral Thesis |
author |
Lovecchio, Juan Pablo |
author_facet |
Lovecchio, Juan Pablo |
author_sort |
Lovecchio, Juan Pablo |
title |
Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics |
title_short |
Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics |
title_full |
Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics |
title_fullStr |
Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics |
title_full_unstemmed |
Seismic stratigraphy of the offshore basins of Argentina : characterization and modeling of the South Atlantic passive margin dynamics |
title_sort |
seismic stratigraphy of the offshore basins of argentina : characterization and modeling of the south atlantic passive margin dynamics |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://theses.hal.science/tel-03126562 https://theses.hal.science/tel-03126562/document https://theses.hal.science/tel-03126562/file/2018SORUS506.pdf |
long_lat |
ENVELOPE(-61.833,-61.833,-63.750,-63.750) |
geographic |
Afuera Argentina Argentine |
geographic_facet |
Afuera Argentina Argentine |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
https://theses.hal.science/tel-03126562 Earth Sciences. Sorbonne Université; Universidad de Buenos Aires, 2018. English. ⟨NNT : 2018SORUS506⟩ |
op_relation |
NNT: 2018SORUS506 tel-03126562 https://theses.hal.science/tel-03126562 https://theses.hal.science/tel-03126562/document https://theses.hal.science/tel-03126562/file/2018SORUS506.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1802650138740523008 |