Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization?
International audience We present new data constraining the Late Jurassic to Early Cretaceous evolution of the Southeastern French basin (SFB). Meso-scale faults with displacement of several decimeters to 1–2 meters were sampled for geometric and kinematic data analysis and the faulted and un-faulte...
Published in: | Bulletin de la Société Géologique de France |
---|---|
Main Authors: | , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2013
|
Subjects: | |
Online Access: | https://hal.science/hal-01440785 https://doi.org/10.2113/gssgfbull.184.4-5.501 |
id |
ftsorbonneuniv:oai:HAL:hal-01440785v1 |
---|---|
record_format |
openpolar |
spelling |
ftsorbonneuniv:oai:HAL:hal-01440785v1 2023-06-11T04:14:44+02:00 Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? Homberg, Catherine Schnyder, Johann Benzaggagh, Mohamed Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Université Moulay Ismail (UMI) 2013 https://hal.science/hal-01440785 https://doi.org/10.2113/gssgfbull.184.4-5.501 en eng HAL CCSD Société géologique de France info:eu-repo/semantics/altIdentifier/doi/10.2113/gssgfbull.184.4-5.501 hal-01440785 https://hal.science/hal-01440785 doi:10.2113/gssgfbull.184.4-5.501 ISSN: 0037-9409 EISSN: 1777-5817 Bulletin de la Société Géologique de France https://hal.science/hal-01440785 Bulletin de la Société Géologique de France, 2013, 184, pp.i. 4-5. ⟨10.2113/gssgfbull.184.4-5.501⟩ 501-514 [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2013 ftsorbonneuniv https://doi.org/10.2113/gssgfbull.184.4-5.501 2023-05-29T23:40:08Z International audience We present new data constraining the Late Jurassic to Early Cretaceous evolution of the Southeastern French basin (SFB). Meso-scale faults with displacement of several decimeters to 1–2 meters were sampled for geometric and kinematic data analysis and the faulted and un-faulted sedimentary units were examined for sedimentologic and bio-stratigraphic purposes. Small-scale faults were also extensively collected to determine the local stress states during this period. Meso-scale normal faults formed during sediment deposition or before its complete lithification attest of a recurrent activity in the Late Jurassic to Early Cretaceous period in an overall extensional context. The fault network cutting the Oxfordian to Aptian sequences included normal faults of various trends, ranging between WSW-ENE and NNW-SSE. We show that the deformation mechanism in the SFB drastically changed in the Jurassic-Cretaceous transition (latermost Tithonian?), with the direction of extension rotating from a WNW-ESE to a NNE-SSW direction. Lateral thickness variation of the sequences, redistribution of sediments, faulting at various scales concur that the Early Cretaceous period marks a tectono-stratigraphic reorganization of the basin. We suggest that it traduces the rifting and later opening of the North Atlantic (main branch and bay of Biscay branch). Article in Journal/Newspaper North Atlantic HAL Sorbonne Université Bulletin de la Société Géologique de France 184 4-5 501 514 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Homberg, Catherine Schnyder, Johann Benzaggagh, Mohamed Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We present new data constraining the Late Jurassic to Early Cretaceous evolution of the Southeastern French basin (SFB). Meso-scale faults with displacement of several decimeters to 1–2 meters were sampled for geometric and kinematic data analysis and the faulted and un-faulted sedimentary units were examined for sedimentologic and bio-stratigraphic purposes. Small-scale faults were also extensively collected to determine the local stress states during this period. Meso-scale normal faults formed during sediment deposition or before its complete lithification attest of a recurrent activity in the Late Jurassic to Early Cretaceous period in an overall extensional context. The fault network cutting the Oxfordian to Aptian sequences included normal faults of various trends, ranging between WSW-ENE and NNW-SSE. We show that the deformation mechanism in the SFB drastically changed in the Jurassic-Cretaceous transition (latermost Tithonian?), with the direction of extension rotating from a WNW-ESE to a NNE-SSW direction. Lateral thickness variation of the sequences, redistribution of sediments, faulting at various scales concur that the Early Cretaceous period marks a tectono-stratigraphic reorganization of the basin. We suggest that it traduces the rifting and later opening of the North Atlantic (main branch and bay of Biscay branch). |
author2 |
Institut des Sciences de la Terre de Paris (iSTeP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) Université Moulay Ismail (UMI) |
format |
Article in Journal/Newspaper |
author |
Homberg, Catherine Schnyder, Johann Benzaggagh, Mohamed |
author_facet |
Homberg, Catherine Schnyder, Johann Benzaggagh, Mohamed |
author_sort |
Homberg, Catherine |
title |
Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? |
title_short |
Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? |
title_full |
Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? |
title_fullStr |
Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? |
title_full_unstemmed |
Late Jurassic-Early Cretaceous faulting in the Southeastern French basin: does it reflect a tectonic reorganization? |
title_sort |
late jurassic-early cretaceous faulting in the southeastern french basin: does it reflect a tectonic reorganization? |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-01440785 https://doi.org/10.2113/gssgfbull.184.4-5.501 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0037-9409 EISSN: 1777-5817 Bulletin de la Société Géologique de France https://hal.science/hal-01440785 Bulletin de la Société Géologique de France, 2013, 184, pp.i. 4-5. ⟨10.2113/gssgfbull.184.4-5.501⟩ 501-514 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.2113/gssgfbull.184.4-5.501 hal-01440785 https://hal.science/hal-01440785 doi:10.2113/gssgfbull.184.4-5.501 |
op_doi |
https://doi.org/10.2113/gssgfbull.184.4-5.501 |
container_title |
Bulletin de la Société Géologique de France |
container_volume |
184 |
container_issue |
4-5 |
container_start_page |
501 |
op_container_end_page |
514 |
_version_ |
1768370988365381632 |