Articles | Volume 19, issue 3
https://doi.org/10.5194/cp-19-533-2023
© 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/cp-19-533-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
08 Mar 2023
Research article |
| 08 Mar 2023
| 08 Mar 2023
Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
Departament de Geologia, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193, Spain
Luis Valero
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
Jorge E. Spangenberg
Institute of Earth Surface Dynamics (IDYST), University of Lausanne, Géopolis, Lausanne, 1015, Switzerland
Andreu Vinyoles
Departament de Dinàmica de la Terra i l'Oceà, Facultat de
Ciències de la Terra, Barcelona, 08028, Spain
Jean Verité
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
Départment des Geosciences, Université de Rennes, Rennes, UMR 6118, France
Thierry Adatte
Institute of Earth Sciences (ISTE), University of Lausanne,
Géopolis, Lausanne, 1015, Switzerland
Maxime Tremblin
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
Stephen Watkins
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
Nikhil Sharma
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
Miguel Garcés
Departament de Dinàmica de la Terra i l'Oceà, Facultat de
Ciències de la Terra, Barcelona, 08028, Spain
Cai Puigdefàbregas
Departament de Geologia, Universitat Autònoma de Barcelona, Bellaterra, Cerdanyola del Vallès, 08193, Spain
Sébastien Castelltort
Département des Sciences de la Terre, Université de
Genève, Geneva, 1205, Switzerland
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Sediments deposited within river channels form the stratigraphic record, which has been used to interpret tectonic events, basin subsidence, and changes in precipitation long after ancient mountain chains have eroded away. Our work combines methods for estimating gravel fining with a landscape evolution model in order to analyze the grain size preserved within the stratigraphic record with greater complexity (e.g. considering topography and channel dynamics) than past approaches.
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Sediments deposited within river channels form the stratigraphic record, which has been used to interpret tectonic events, basin subsidence, and changes in precipitation long after ancient mountain chains have eroded away. Our work combines methods for estimating gravel fining with a Landscape Evolution Model in order to analyze the grain size preserved within the stratigraphic record with greater complexity (e.g. considering topography and channel dynamics) than past approaches.
Amanda Lily Wild, Jean Braun, Alexander C. Whittaker, and Sebastien Castelltort
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Sediments deposited within river channels form the stratigraphic record, which has been used to interpret tectonic events, basin subsidence, and changes in precipitation long after ancient mountain chains have eroded away. Our work combines methods for estimating gravel fining with a landscape evolution model in order to analyze the grain size preserved within the stratigraphic record with greater complexity (e.g. considering topography and channel dynamics) than past approaches.
Florian Franziskakis, Christian Vérard, Sébastien Castelltort, and Grégory Giuliani
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLVIII-4-W13-2025, 111–118, https://doi.org/10.5194/isprs-archives-XLVIII-4-W13-2025-111-2025, https://doi.org/10.5194/isprs-archives-XLVIII-4-W13-2025-111-2025, 2025
Rocio Jaimes-Gutierrez, Marine Prieur, David J. Wilson, Philip A. E. Pogge von Strandmann, Emmanuelle Pucéat, Thierry Adatte, Jorge E. Spangenberg, and Sébastien Castelltort
EGUsphere, https://doi.org/10.5194/egusphere-2025-2619, https://doi.org/10.5194/egusphere-2025-2619, 2025
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This study examines how weathering in the Southern Pyrenees responded to a significant global warming event that occurred 56 million years ago. We found that changes in rainfall and erosion significantly influenced how minerals break down, and that the weathering response evolved from the continental interior to the marine environment. These results highlight regional variations in Earth's surface response to climatic perturbations and the processes at play in response to global warming.
Jean Vérité, Clément Narteau, Olivier Rozier, Jeanne Alkalla, Laurie Barrier, and Sylvain Courrech du Pont
Earth Surf. Dynam., 13, 23–39, https://doi.org/10.5194/esurf-13-23-2025, https://doi.org/10.5194/esurf-13-23-2025, 2025
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Using a numerical model in 2D, we study how two identical dunes interact with each other when exposed to reversing winds. Depending on the distance between the dunes, they either repel or attract each other until they reach an equilibrium distance, which is controlled by the wind strength, wind reversal frequency, and dune size. This process is controlled by the modification of wind flow over dunes of various shapes, influencing the sediment transport downstream.
Nikhil Sharma, Jorge E. Spangenberg, Thierry Adatte, Torsten Vennemann, László Kocsis, Jean Vérité, Luis Valero, and Sébastien Castelltort
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Cécile Charles, Nora Khelidj, Lucia Mottet, Bao Ngan Tu, Thierry Adatte, Brahimsamba Bomou, Micaela Faria, Laetitia Monbaron, Olivier Reubi, Natasha de Vere, Stéphanie Grand, and Gianalberto Losapio
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We found that novel ecosystems created by glacier retreat are first characterized by an increase in plant diversity that is driven by a shift in soil texture. Plant diversity in turn increases soil organic matter and nutrient. Soils gradually acidifies and leads to a final stage where a dominance of few plant species reduces plant diversity. Understanding plant–soil interactions is crucial to anticipate how glacier retreat shapes biodiversity and landscapes.
Ariel Henrique do Prado, David Mair, Philippos Garefalakis, Chantal Schmidt, Alexander Whittaker, Sebastien Castelltort, and Fritz Schlunegger
Hydrol. Earth Syst. Sci., 28, 1173–1190, https://doi.org/10.5194/hess-28-1173-2024, https://doi.org/10.5194/hess-28-1173-2024, 2024
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Engineering structures known as check dams are built with the intention of managing streams. The effectiveness of such structures can be expressed by quantifying the reduction of the sediment flux after their implementation. In this contribution, we estimate and compare the volumes of sediment transported in a mountain stream for engineered and non-engineered conditions. We found that without check dams the mean sediment flux would be ca. 10 times larger in comparison with the current situation.
Morgan T. Jones, Ella W. Stokke, Alan D. Rooney, Joost Frieling, Philip A. E. Pogge von Strandmann, David J. Wilson, Henrik H. Svensen, Sverre Planke, Thierry Adatte, Nicolas Thibault, Madeleine L. Vickers, Tamsin A. Mather, Christian Tegner, Valentin Zuchuat, and Bo P. Schultz
Clim. Past, 19, 1623–1652, https://doi.org/10.5194/cp-19-1623-2023, https://doi.org/10.5194/cp-19-1623-2023, 2023
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There are periods in Earth’s history when huge volumes of magma are erupted at the Earth’s surface. The gases released from volcanic eruptions and from sediments heated by the magma are believed to have caused severe climate changes in the geological past. We use a variety of volcanic and climatic tracers to assess how the North Atlantic Igneous Province (56–54 Ma) affected the oceans and atmosphere during a period of extreme global warming.
Robin Fentimen, Eline Feenstra, Andres Rüggeberg, Efraim Hall, Valentin Rime, Torsten Vennemann, Irka Hajdas, Antonietta Rosso, David Van Rooij, Thierry Adatte, Hendrik Vogel, Norbert Frank, and Anneleen Foubert
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Frida S. Hoem, Luis Valero, Dimitris Evangelinos, Carlota Escutia, Bella Duncan, Robert M. McKay, Henk Brinkhuis, Francesca Sangiorgi, and Peter K. Bijl
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Jean Vérité, Édouard Ravier, Olivier Bourgeois, Stéphane Pochat, Thomas Lelandais, Régis Mourgues, Christopher D. Clark, Paul Bessin, David Peigné, and Nigel Atkinson
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Louis Honegger, Thierry Adatte, Jorge E. Spangenberg, Miquel Poyatos-Moré, Alexandre Ortiz, Magdalena Curry, Damien Huyghe, Cai Puigdefàbregas, Miguel Garcés, Andreu Vinyoles, Luis Valero, Charlotte Läuchli, Andrés Nowak, Andrea Fildani, Julian D. Clark, and Sébastien Castelltort
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Publication in SE not foreseen
Lydia R. Bailey, Filippo L. Schenker, Maria Giuditta Fellin, Miriam Cobianchi, Thierry Adatte, and Vincenzo Picotti
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The Kallipetra Basin, formed in the Late Cretaceous on the reworked Pelagonian–Axios–Vardar contact in the Hellenides, is described for the first time. We document how and when the basin evolved in response to tectonic forcings and basin inversion. Cenomanian extension and basin widening was followed by Turonian compression and basin inversion. Thrusting occurred earlier than previously reported in the literature, with a vergence to the NE, at odds with the regional SW vergence of the margin.
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Short summary
The Middle Eocene Climatic Optimum (MECO) was a global warming event that took place 40 Myr ago and lasted ca. 500 kyr, inducing physical, chemical, and biotic changes on the Earth. We use stable isotopes to identify the MECO in the Eocene deltaic deposits of the Southern Pyrenees. Our findings reveal enhanced deltaic progradation during the MECO, pointing to the important impact of global warming on fluvial sediment transport with implications for the consequences of current climate change.
The Middle Eocene Climatic Optimum (MECO) was a global warming event that took place 40 Myr ago...
