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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Related subject area
Subject: Continental Surface Processes | Archive: Terrestrial Archives | Timescale: Cenozoic
Climatic and tectonic controls on shallow-marine and freshwater diatomite deposition throughout the Palaeogene
Middle Eocene Climatic Optimum (MECO) and its imprint in the continental Escanilla Formation, Spain
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Climate and ecology in the Rocky Mountain interior after the early Eocene Climatic Optimum
Palaeo-environmental evolution of Central Asia during the Cenozoic: new insights from the continental sedimentary archive of the Valley of Lakes (Mongolia)
Terrestrial responses of low-latitude Asia to the Eocene–Oligocene climate transition revealed by integrated chronostratigraphy
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Pliocene to Pleistocene climate and environmental history of Lake El'gygytgyn, Far East Russian Arctic, based on high-resolution inorganic geochemistry data
A re-evaluation of the palaeoclimatic significance of phosphorus variability in speleothems revealed by high-resolution synchrotron micro XRF mapping
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A global-scale compilation of Palaeogene diatomite occurrences shows how palaeogeographic and palaeoceanographic changes impacted diatom accumulation, especially in the middle Eocene. Diatomite deposition dropped in epicontinental seas between ~ 46 and ~ 44 Ma, while diatom accumulation began around 43.5 Ma in open-ocean settings. The compilation also shows an indirect correlation between Palaeogene climate fluctuations and diatomite deposition in shallow-marine and freshwater environments.
Nikhil Sharma, Jorge E. Spangenberg, Thierry Adatte, Torsten Vennemann, László Kocsis, Jean Vérité, Luis Valero, and Sébastien Castelltort
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Modern climate change drives us to look to the past to understand how well prior life adapted to warm periods. In the early Eocene, a warm period approximately 50 million years ago, southwestern Wyoming was covered by a giant lake. This lake and surrounding environments made for excellent preservation of ancient soils, plant fossils, and more. Using geochemical tools and plant fossils, we determine the region was a warm, wet forest and that elevated temperatures were maintained by volcanoes.
Andre Baldermann, Oliver Wasser, Elshan Abdullayev, Stefano Bernasconi, Stefan Löhr, Klaus Wemmer, Werner E. Piller, Maxim Rudmin, and Sylvain Richoz
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We identified the provenance, (post)depositional history, weathering conditions and hydroclimate that formed the detrital and authigenic silicates and soil carbonates of the Valley of Lakes sediments in Central Asia during the Cenozoic (~34 to 21 Ma). Aridification pulses in continental Central Asia coincide with marine glaciation events and are caused by Cenozoic climate forcing and the exhumation of the Tian Shan, Hangay and Altai mountains, which reduced the moisture influx by westerly winds.
Y. X. Li, W. J. Jiao, Z. H. Liu, J. H. Jin, D. H. Wang, Y. X. He, and C. Quan
Clim. Past, 12, 255–272, https://doi.org/10.5194/cp-12-255-2016, https://doi.org/10.5194/cp-12-255-2016, 2016
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An integrated litho-, bio-, cyclo-, and magnetostratigraphy constrains the onset of a depositional environmental change from a lacustrine to a deltaic environment in the Maoming Basin, China, at 33.88 Ma. This coincides with the global cooling during the Eocene-Oligocene transition (EOT) at ~ 33.7–33.9 Ma. This change represents terrestrial responses of low-latitude Asia to the EOT. The greatly refined chronology permits detailed examination of the late Paleogene climate change in southeast Asia.
A. E. Chew
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This project describes mammal faunal response in the zone of the ETM2 and H2 hyperthermals (rapid global warming events) of the early Paleogene in the south-central Bighorn Basin, WY. The response includes changes in faunal structure and species relative body size. Comparative analysis suggests that environmental moisture and rate of change are important moderators of response.
V. Wennrich, P. S. Minyuk, V. Borkhodoev, A. Francke, B. Ritter, N. R. Nowaczyk, M. A. Sauerbrey, J. Brigham-Grette, and M. Melles
Clim. Past, 10, 1381–1399, https://doi.org/10.5194/cp-10-1381-2014, https://doi.org/10.5194/cp-10-1381-2014, 2014
S. Frisia, A. Borsato, R. N. Drysdale, B. Paul, A. Greig, and M. Cotte
Clim. Past, 8, 2039–2051, https://doi.org/10.5194/cp-8-2039-2012, https://doi.org/10.5194/cp-8-2039-2012, 2012
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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...
