Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain

The early Cenozoic marine sedimentary record is punctuated by several brief episodes (<200 kyr) of abrupt global warming, called hyperthermals, that have disturbed ocean life and water physicochemistry. Moreover, recent studies of fluvial-deltaic systems, for instance at the Palaeocene-Eocene The...

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Autores: Peris Cabré, Sabí, Valero Montesa, Luis, Spangenberg, Jorge E., Vinyoles i Busquets, Andreu, Verité, Jean, Adatte, Thierry, Tremblin, Maxime, Watkins, Stephen, Sharma, Nikhil, Garcés Crespo, Miguel, Puigdefàbregas, Cai, Castelltort, Sébastien
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/199920
Acceso en línea:https://hdl.handle.net/2445/199920
Access Level:acceso abierto
Palabra clave:Sediments marins
Eocè
Sediments fluvials
Transport de sediments
Pirineus
Marine sediments
Eocene Epoch
River sediments
Sediment transport
Pyrenees
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repository_id_str
spelling Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, SpainPeris Cabré, SabíValero Montesa, LuisSpangenberg, Jorge E.Vinyoles i Busquets, AndreuVerité, JeanAdatte, ThierryTremblin, MaximeWatkins, StephenSharma, NikhilGarcés Crespo, MiguelPuigdefàbregas, CaiCastelltort, SébastienSediments marinsEocèSediments fluvialsTransport de sedimentsPirineusMarine sedimentsEocene EpochRiver sedimentsSediment transportPyreneesThe early Cenozoic marine sedimentary record is punctuated by several brief episodes (<200 kyr) of abrupt global warming, called hyperthermals, that have disturbed ocean life and water physicochemistry. Moreover, recent studies of fluvial-deltaic systems, for instance at the Palaeocene-Eocene Thermal Maximum, revealed that these hyperthermals also impacted the hydrologic cycle, triggering an increase in erosion and sediment transport at the Earth's surface. Contrary to the early Cenozoic hyperthermals, the Middle Eocene Climatic Optimum (MECO), lasting from 40.5 to 40.0 Ma, constitutes an event of gradual warming that left a highly variable carbon isotope signature and for which little data exist about its impact on Earth surface systems. In the South Pyrenean foreland basin (SPFB), an episode of prominent deltaic progradation (Belsué-Atarés and Escanilla formations) in the middle Bartonian has been usually associated with increased Pyrenean tectonic activity, but recent magnetostratigraphic data suggest a possible coincidence between the progradation and the MECO warming period. To test this hypothesis, we measured the stable-isotope composition of carbonates (δ13Ccarb and δ18Ocarb) and organic matter (δ13Corg) of 257 samples in two sections of SPFB fluvial-deltaic successions covering the different phases of the MECO and already dated with magnetostratigraphy. We find a negative shift in δ18Ocarb and an unclear signal in δ13Ccarb around the transition from magnetic chron C18r to chron C17r (middle Bartonian). These results allow, by correlation with reference sections in the Atlantic and Tethys, the MECO to be identified and its coincident relationship with the Belsué-Atarès fluvial-deltaic progradation to be documented. Despite its long duration and a more gradual temperature rise, the MECO in the South Pyrenean foreland basin may have led, like lower Cenozoic hyperthermals, to an increase in erosion and sediment transport that is manifested in the sedimentary record. The new data support the hypothesis of a more important hydrological response to the MECO than previously thought in mid-latitude environments, including those around the Tethys.European Geosciences Union (EGU)2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/199920Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.5194/cp-19-533-2023Climate Of The Past, 2023, vol. 19, num. 3, p. 533-554https://doi.org/10.5194/cp-19-533-2023cc-by (c) Peris Cabré, Sabí et al., 2023https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1999202026-05-27T06:46:51Z
dc.title.none.fl_str_mv Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
title Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
spellingShingle Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
Peris Cabré, Sabí
Sediments marins
Eocè
Sediments fluvials
Transport de sediments
Pirineus
Marine sediments
Eocene Epoch
River sediments
Sediment transport
Pyrenees
title_short Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
title_full Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
title_fullStr Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
title_full_unstemmed Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
title_sort Fluvio-deltaic record of increased sediment transport during the Middle Eocene Climatic Optimum (MECO), Southern Pyrenees, Spain
dc.creator.none.fl_str_mv Peris Cabré, Sabí
Valero Montesa, Luis
Spangenberg, Jorge E.
Vinyoles i Busquets, Andreu
Verité, Jean
Adatte, Thierry
Tremblin, Maxime
Watkins, Stephen
Sharma, Nikhil
Garcés Crespo, Miguel
Puigdefàbregas, Cai
Castelltort, Sébastien
author Peris Cabré, Sabí
author_facet Peris Cabré, Sabí
Valero Montesa, Luis
Spangenberg, Jorge E.
Vinyoles i Busquets, Andreu
Verité, Jean
Adatte, Thierry
Tremblin, Maxime
Watkins, Stephen
Sharma, Nikhil
Garcés Crespo, Miguel
Puigdefàbregas, Cai
Castelltort, Sébastien
author_role author
author2 Valero Montesa, Luis
Spangenberg, Jorge E.
Vinyoles i Busquets, Andreu
Verité, Jean
Adatte, Thierry
Tremblin, Maxime
Watkins, Stephen
Sharma, Nikhil
Garcés Crespo, Miguel
Puigdefàbregas, Cai
Castelltort, Sébastien
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Sediments marins
Eocè
Sediments fluvials
Transport de sediments
Pirineus
Marine sediments
Eocene Epoch
River sediments
Sediment transport
Pyrenees
topic Sediments marins
Eocè
Sediments fluvials
Transport de sediments
Pirineus
Marine sediments
Eocene Epoch
River sediments
Sediment transport
Pyrenees
description The early Cenozoic marine sedimentary record is punctuated by several brief episodes (<200 kyr) of abrupt global warming, called hyperthermals, that have disturbed ocean life and water physicochemistry. Moreover, recent studies of fluvial-deltaic systems, for instance at the Palaeocene-Eocene Thermal Maximum, revealed that these hyperthermals also impacted the hydrologic cycle, triggering an increase in erosion and sediment transport at the Earth's surface. Contrary to the early Cenozoic hyperthermals, the Middle Eocene Climatic Optimum (MECO), lasting from 40.5 to 40.0 Ma, constitutes an event of gradual warming that left a highly variable carbon isotope signature and for which little data exist about its impact on Earth surface systems. In the South Pyrenean foreland basin (SPFB), an episode of prominent deltaic progradation (Belsué-Atarés and Escanilla formations) in the middle Bartonian has been usually associated with increased Pyrenean tectonic activity, but recent magnetostratigraphic data suggest a possible coincidence between the progradation and the MECO warming period. To test this hypothesis, we measured the stable-isotope composition of carbonates (δ13Ccarb and δ18Ocarb) and organic matter (δ13Corg) of 257 samples in two sections of SPFB fluvial-deltaic successions covering the different phases of the MECO and already dated with magnetostratigraphy. We find a negative shift in δ18Ocarb and an unclear signal in δ13Ccarb around the transition from magnetic chron C18r to chron C17r (middle Bartonian). These results allow, by correlation with reference sections in the Atlantic and Tethys, the MECO to be identified and its coincident relationship with the Belsué-Atarès fluvial-deltaic progradation to be documented. Despite its long duration and a more gradual temperature rise, the MECO in the South Pyrenean foreland basin may have led, like lower Cenozoic hyperthermals, to an increase in erosion and sediment transport that is manifested in the sedimentary record. The new data support the hypothesis of a more important hydrological response to the MECO than previously thought in mid-latitude environments, including those around the Tethys.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/199920
url https://hdl.handle.net/2445/199920
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.5194/cp-19-533-2023
Climate Of The Past, 2023, vol. 19, num. 3, p. 533-554
https://doi.org/10.5194/cp-19-533-2023
dc.rights.none.fl_str_mv cc-by (c) Peris Cabré, Sabí et al., 2023
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Peris Cabré, Sabí et al., 2023
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv European Geosciences Union (EGU)
publisher.none.fl_str_mv European Geosciences Union (EGU)
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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