Articles | Volume 14, issue 1
https://doi.org/10.5194/se-14-1-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-14-1-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Rift thermal inheritance in the SW Alps (France): insights from RSCM thermometry and 1D thermal numerical modelling
Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS,
TotalEnergies, LFCR, 64000 Pau, France
Géosciences Environnement Toulouse, Université de Toulouse
Paul Sabatier, CNRS, IRD, 31000 Toulouse, France
BRGM, 45060 Orléans, France
Frédéric Mouthereau
Géosciences Environnement Toulouse, Université de Toulouse
Paul Sabatier, CNRS, IRD, 31000 Toulouse, France
Abdeltif Lahfid
BRGM, 45060 Orléans, France
ISTO, UMR7327, Université d'Orléans, CNRS, BRGM, 45071
Orléans, France
Claude Gout
Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS,
TotalEnergies, LFCR, 64000 Pau, France
Jean-Paul Callot
Université de Pau et des Pays de l'Adour, E2S UPPA, CNRS,
TotalEnergies, LFCR, 64000 Pau, France
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Louise Boschetti, Malou Pelletier, Fréderic Mouthereau, Stephane Schwartz, Yann Rolland, Guilhem Hoareau, Thierry Dumont, Dorian Bienveignant, and Abdeltif Lahfid
EGUsphere, https://doi.org/10.5194/egusphere-2025-3332, https://doi.org/10.5194/egusphere-2025-3332, 2025
This preprint is open for discussion and under review for Solid Earth (SE).
Short summary
Short summary
We investigated the Vocontian Basin in SE of France to understand its tectonic evolution and its preservation of deformation as it is at the intersection between Alps and Pyrenees. By combining calcite U–Pb dating, burial modeling and Raman thermometry, we identified three major deformation phases from the Late Cretaceous to the Miocene. Our results highlight how brittle deformation, fluid circulation, and thermal gradients record the interplay of multiple mountain-building and rifting events.
David Oakley, Christelle Loiselet, Thierry Coowar, Vincent Labbe, and Jean-Paul Callot
Geosci. Model Dev., 18, 939–960, https://doi.org/10.5194/gmd-18-939-2025, https://doi.org/10.5194/gmd-18-939-2025, 2025
Short summary
Short summary
In this work, we develop two automated workflows for identifying fold structures on geological maps using machine learning. In one method, we identify map patterns suggestive of folding based on pre-defined rules and apply a clustering algorithm to group those from the same fold together. In the other, we train a convolutional neural network to identify folds based on a set of training examples. We apply both methods to a set of synthetic maps and to real-world maps from two locations in France.
Marine Larrey, Frédéric Mouthereau, Damien Do Couto, Emmanuel Masini, Anthony Jourdon, Sylvain Calassou, and Véronique Miegebielle
Solid Earth, 14, 1221–1244, https://doi.org/10.5194/se-14-1221-2023, https://doi.org/10.5194/se-14-1221-2023, 2023
Short summary
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Extension leading to the formation of ocean–continental transition can be highly oblique to the main direction of crustal thinning. Here we explore the case of a continental margin exposed in the Betics that developed in a back-arc setting perpendicular to the direction of the retreating Gibraltar subduction. We show that transtension is the main mode of crustal deformation that led to the development of metamorphic domes and extensional intramontane basins.
Olivier Lacombe, Nicolas E. Beaudoin, Guilhem Hoareau, Aurélie Labeur, Christophe Pecheyran, and Jean-Paul Callot
Solid Earth, 12, 2145–2157, https://doi.org/10.5194/se-12-2145-2021, https://doi.org/10.5194/se-12-2145-2021, 2021
Short summary
Short summary
This paper aims to illustrate how the timing and duration of contractional deformation associated with folding in orogenic forelands can be constrained by the dating of brittle mesostructures observed in folded strata. The study combines new and already published absolute ages of fractures to provide, for the first time, an educated discussion about the factors controlling the duration of the sequence of deformation encompassing layer-parallel shortening, fold growth, and late fold tightening.
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Short summary
We investigate the peak temperature of sedimentary rocks of the SW Alps (France), using Raman spectroscopy on carbonaceous material. This method provides an estimate of the peak temperature achieved by organic-rich rocks. To determine the timing and the tectonic context of the origin of these temperatures we use 1D thermal modelling. We find that the high temperatures up to 300 °C were achieved during precollisional extensional events, not during tectonic burial in the Western Alps.
We investigate the peak temperature of sedimentary rocks of the SW Alps (France), using Raman...