From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland
International audience Offshore Ireland, the North Atlantic opening is generally interpreted as successive, 10-to-15-Myr-long, rifting events during the Mesozoic. However, their interaction is poorly documented in terms of structural inheritance and fault reactivation. From extensive seismic and wel...
Published in: | Journal of Structural Geology |
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ftunivnantes:oai:HAL:hal-02323760v1 2023-05-15T17:33:59+02:00 From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland Bulois, Cédric Pubellier, Manuel Chamot-Rooke, Nicolas Watremez, Louise Laboratoire de géologie de l'ENS (LGENS) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) 2018-09 https://hal.archives-ouvertes.fr/hal-02323760 https://hal.archives-ouvertes.fr/hal-02323760/document https://hal.archives-ouvertes.fr/hal-02323760/file/2018_BuloisJournalStructuralGeology_uncorrected.pdf https://doi.org/10.1016/j.jsg.2018.06.021 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsg.2018.06.021 hal-02323760 https://hal.archives-ouvertes.fr/hal-02323760 https://hal.archives-ouvertes.fr/hal-02323760/document https://hal.archives-ouvertes.fr/hal-02323760/file/2018_BuloisJournalStructuralGeology_uncorrected.pdf doi:10.1016/j.jsg.2018.06.021 info:eu-repo/semantics/OpenAccess ISSN: 0191-8141 Journal of Structural Geology https://hal.archives-ouvertes.fr/hal-02323760 Journal of Structural Geology, 2018, 114, pp.139-162. ⟨10.1016/j.jsg.2018.06.021⟩ [SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy info:eu-repo/semantics/article Journal articles 2018 ftunivnantes https://doi.org/10.1016/j.jsg.2018.06.021 2022-12-07T01:46:26Z International audience Offshore Ireland, the North Atlantic opening is generally interpreted as successive, 10-to-15-Myr-long, rifting events during the Mesozoic. However, their interaction is poorly documented in terms of structural inheritance and fault reactivation. From extensive seismic and well data in the northern Porcupine Basin, we show that extension actually evolved over an abnormal period of ca. 220 Myrs with overlapping tectonic stages that, all together, reflect the Irish Atlantic Margin construction from the Palaeozoic. During the Carboniferous, extension initiated throughout the Variscan and Caledonian thickened crusts and controlled the deposition of generally slightly-tilted, continental clastics. Two subsequent rifting events, during the Triassic-Lower Jurassic and Upper-Jurassic-Lower Cretaceous, controlled shallow-to-deep marine sedi-mentation in separated sub-basins that progressively widen and connect once extension localised along bounding faults. We propose that extensional tectonics, first controlled by a general orogenic collapse reflecting an early stage of stretching, is then followed by several rifting periods that ultimately evolved toward the hyper-thinning of the margin and shaped an aborted rift propagator. This evolution is due to pre-existing orogenic-related structures and boundary conditions variations. Such a continuum of deformation, although pulsed, implies varying structural interactions of crustal scale that are often recorded in syn-tectonic sediments. Article in Journal/Newspaper North Atlantic Université de Nantes: HAL-UNIV-NANTES Journal of Structural Geology 114 139 162 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
spellingShingle |
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy Bulois, Cédric Pubellier, Manuel Chamot-Rooke, Nicolas Watremez, Louise From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland |
topic_facet |
[SDU.STU.TE]Sciences of the Universe [physics]/Earth Sciences/Tectonics [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
description |
International audience Offshore Ireland, the North Atlantic opening is generally interpreted as successive, 10-to-15-Myr-long, rifting events during the Mesozoic. However, their interaction is poorly documented in terms of structural inheritance and fault reactivation. From extensive seismic and well data in the northern Porcupine Basin, we show that extension actually evolved over an abnormal period of ca. 220 Myrs with overlapping tectonic stages that, all together, reflect the Irish Atlantic Margin construction from the Palaeozoic. During the Carboniferous, extension initiated throughout the Variscan and Caledonian thickened crusts and controlled the deposition of generally slightly-tilted, continental clastics. Two subsequent rifting events, during the Triassic-Lower Jurassic and Upper-Jurassic-Lower Cretaceous, controlled shallow-to-deep marine sedi-mentation in separated sub-basins that progressively widen and connect once extension localised along bounding faults. We propose that extensional tectonics, first controlled by a general orogenic collapse reflecting an early stage of stretching, is then followed by several rifting periods that ultimately evolved toward the hyper-thinning of the margin and shaped an aborted rift propagator. This evolution is due to pre-existing orogenic-related structures and boundary conditions variations. Such a continuum of deformation, although pulsed, implies varying structural interactions of crustal scale that are often recorded in syn-tectonic sediments. |
author2 |
Laboratoire de géologie de l'ENS (LGENS) Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 (LOG) Institut national des sciences de l'Univers (INSU - CNRS)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD France-Nord ) |
format |
Article in Journal/Newspaper |
author |
Bulois, Cédric Pubellier, Manuel Chamot-Rooke, Nicolas Watremez, Louise |
author_facet |
Bulois, Cédric Pubellier, Manuel Chamot-Rooke, Nicolas Watremez, Louise |
author_sort |
Bulois, Cédric |
title |
From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland |
title_short |
From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland |
title_full |
From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland |
title_fullStr |
From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland |
title_full_unstemmed |
From orogenic collapse to rifting: A case study of the northern Porcupine Basin, offshore Ireland |
title_sort |
from orogenic collapse to rifting: a case study of the northern porcupine basin, offshore ireland |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.archives-ouvertes.fr/hal-02323760 https://hal.archives-ouvertes.fr/hal-02323760/document https://hal.archives-ouvertes.fr/hal-02323760/file/2018_BuloisJournalStructuralGeology_uncorrected.pdf https://doi.org/10.1016/j.jsg.2018.06.021 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0191-8141 Journal of Structural Geology https://hal.archives-ouvertes.fr/hal-02323760 Journal of Structural Geology, 2018, 114, pp.139-162. ⟨10.1016/j.jsg.2018.06.021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsg.2018.06.021 hal-02323760 https://hal.archives-ouvertes.fr/hal-02323760 https://hal.archives-ouvertes.fr/hal-02323760/document https://hal.archives-ouvertes.fr/hal-02323760/file/2018_BuloisJournalStructuralGeology_uncorrected.pdf doi:10.1016/j.jsg.2018.06.021 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.jsg.2018.06.021 |
container_title |
Journal of Structural Geology |
container_volume |
114 |
container_start_page |
139 |
op_container_end_page |
162 |
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