The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)

The Grande Coupure represents a major terrestrial faunal turnover recorded in Eurasia associated with the overall climate shift at the Eocene-Oligocene transition. During this event, a large number of European Eocene endemic mammals became extinct and new Asian immigrants appeared. The absolute age...

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Authors: Costa Gisbert, Elisenda, Garcés Crespo, Miguel, Sáez, Alberto, Cabrera, Lluís, López Blanco, Miguel
Format: article
Status:Versión aceptada para publicación
Publication Date:2011
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/34510
Online Access:https://hdl.handle.net/2445/34510
Access Level:Open access
Keyword:Mamífers fòssils
Eocè
Oligocè
Ebre, Depressió de l'
Fossil mammals
Eocene Epoch
Oligocene
Ebro River Watershed (Spain)
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spelling The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)Costa Gisbert, ElisendaGarcés Crespo, MiguelSáez, AlbertoCabrera, LluísLópez Blanco, MiguelMamífers fòssilsEocèOligocèEbre, Depressió de l'Fossil mammalsEocene EpochOligoceneEbro River Watershed (Spain)The Grande Coupure represents a major terrestrial faunal turnover recorded in Eurasia associated with the overall climate shift at the Eocene-Oligocene transition. During this event, a large number of European Eocene endemic mammals became extinct and new Asian immigrants appeared. The absolute age of the Grande Coupure, however, has remained controversial for decades. The Late Eocene-Oligocene continental record of the Eastern Ebro Basin (NE Spain) constitutes a unique opportunity to build a robust magnetostratigraphy- based chronostratigraphy which can contribute with independent age constraints for this important turnover. This study presents new magnetostratigraphic data of a 495-m-thick section (Moià-Santpedor) that ranges from 36.1 Ma to 33.3 Ma. The integration of the new results with previous litho- bio- and magnetostratigraphic records of the Ebro Basin yields accurate ages for the immediately pre- and post-Grand Coupure mammal fossil assemblages found in the study area, bracketing the Grande Coupure to an age embracing the Eocene-Oligocene transition, with a maximum allowable lag of 0.5 Myr with respect to this boundary. The shift to drier conditions that accompanied the global cooling at the Eocene-Oligocene transition probably determined the sedimentary trends in the Eastern Ebro Basin. The occurrence and expansion of an amalgamated-channel sandstone unit is interpreted as the forced response of the fluvial fan system to the transient retraction of the central-basin lake systems. The new results from the Ebro Basin allow us to revisit correlations for the controversial Eocene-Oligocene record of the Hampshire Basin (Isle of Wight, UK), and their implications for the calibration of the Mammal Palaeogene reference levels MP18 to MP21.Elsevier B.V.2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/34510Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésPalaeogeography Palaeoclimatology Palaeoecology, 2011, vol. 301, num. 1-4, p. 97-107(c) Elsevier B.V., 2011info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/345102026-05-27T06:46:51Z
dc.title.none.fl_str_mv The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
title The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
spellingShingle The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
Costa Gisbert, Elisenda
Mamífers fòssils
Eocè
Oligocè
Ebre, Depressió de l'
Fossil mammals
Eocene Epoch
Oligocene
Ebro River Watershed (Spain)
title_short The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
title_full The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
title_fullStr The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
title_full_unstemmed The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
title_sort The age of the"Grande Coupure" mammal turnover: New constraints from the Eocene Oligocene record of the Eastern Ebro Basin (NE Spain.)
dc.creator.none.fl_str_mv Costa Gisbert, Elisenda
Garcés Crespo, Miguel
Sáez, Alberto
Cabrera, Lluís
López Blanco, Miguel
author Costa Gisbert, Elisenda
author_facet Costa Gisbert, Elisenda
Garcés Crespo, Miguel
Sáez, Alberto
Cabrera, Lluís
López Blanco, Miguel
author_role author
author2 Garcés Crespo, Miguel
Sáez, Alberto
Cabrera, Lluís
López Blanco, Miguel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Mamífers fòssils
Eocè
Oligocè
Ebre, Depressió de l'
Fossil mammals
Eocene Epoch
Oligocene
Ebro River Watershed (Spain)
topic Mamífers fòssils
Eocè
Oligocè
Ebre, Depressió de l'
Fossil mammals
Eocene Epoch
Oligocene
Ebro River Watershed (Spain)
description The Grande Coupure represents a major terrestrial faunal turnover recorded in Eurasia associated with the overall climate shift at the Eocene-Oligocene transition. During this event, a large number of European Eocene endemic mammals became extinct and new Asian immigrants appeared. The absolute age of the Grande Coupure, however, has remained controversial for decades. The Late Eocene-Oligocene continental record of the Eastern Ebro Basin (NE Spain) constitutes a unique opportunity to build a robust magnetostratigraphy- based chronostratigraphy which can contribute with independent age constraints for this important turnover. This study presents new magnetostratigraphic data of a 495-m-thick section (Moià-Santpedor) that ranges from 36.1 Ma to 33.3 Ma. The integration of the new results with previous litho- bio- and magnetostratigraphic records of the Ebro Basin yields accurate ages for the immediately pre- and post-Grand Coupure mammal fossil assemblages found in the study area, bracketing the Grande Coupure to an age embracing the Eocene-Oligocene transition, with a maximum allowable lag of 0.5 Myr with respect to this boundary. The shift to drier conditions that accompanied the global cooling at the Eocene-Oligocene transition probably determined the sedimentary trends in the Eastern Ebro Basin. The occurrence and expansion of an amalgamated-channel sandstone unit is interpreted as the forced response of the fluvial fan system to the transient retraction of the central-basin lake systems. The new results from the Ebro Basin allow us to revisit correlations for the controversial Eocene-Oligocene record of the Hampshire Basin (Isle of Wight, UK), and their implications for the calibration of the Mammal Palaeogene reference levels MP18 to MP21.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/34510
url https://hdl.handle.net/2445/34510
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Palaeogeography Palaeoclimatology Palaeoecology, 2011, vol. 301, num. 1-4, p. 97-107
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2011
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2011
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
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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