Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz
This paper proposes a biostratigraphic framework for the last 50 kyr in the contourite depositional system (CDS) of the Gulf of Cádiz with a solid and independent age control, and tests the reliability of faunal-based analyses in a bottom current-dominated environment related to high current velocit...
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2018
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Online Access: | https://oskar-bordeaux.fr/handle/20.500.12278/199327 https://hdl.handle.net/20.500.12278/199327 https://doi.org/10.1016/j.margeo.2017.09.014 |
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/199327 2024-05-19T07:44:08+00:00 Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz DUCASSOU, Emmanuelle HASSAN, Rim GONTHIER, Eliane DUPRAT, Josette HANQUIEZ, Vincent MULDER, Thierry 2018-01-01 https://oskar-bordeaux.fr/handle/20.500.12278/199327 https://hdl.handle.net/20.500.12278/199327 https://doi.org/10.1016/j.margeo.2017.09.014 EN eng 0025-3227 oai:crossref.org:10.1016/j.margeo.2017.09.014 https://oskar-bordeaux.fr/handle/20.500.12278/199327 doi:10.1016/j.margeo.2017.09.014 open Pas de Licence CC crossref Sciences de l'environnement Article de revue 2018 ftoskarbordeaux https://doi.org/20.500.12278/19932710.1016/j.margeo.2017.09.014 2024-04-29T02:11:35Z This paper proposes a biostratigraphic framework for the last 50 kyr in the contourite depositional system (CDS) of the Gulf of Cádiz with a solid and independent age control, and tests the reliability of faunal-based analyses in a bottom current-dominated environment related to high current velocities. The distribution of planktonic foraminifera and pteropods has been studied in twenty-two piston cores of the Holocene and Late Pleistocene age from the Gulf of Cádiz. A detailed correlation between the cores has been made possible by a large radiocarbon and isotopic data set and a high degree of similarity of frequency changes within several species by coiling direction changes of Globorotalia truncatulinoides and Globorotalia hirsuta and by occurrences of the polar species Neogloboquadrina pachyderma and Limacina retroversa. Occurrences of these polar species are clearly related to paleoclimatic oscillations and reflect rapidly changing surface water conditions in the Gulf of Cádiz during the latest Pleistocene that have been observed regardless of sedimentation rates and sedimentary environments (contouritic drifts vs slope without bottom current influence). Article in Journal/Newspaper Neogloboquadrina pachyderma Planktonic foraminifera OSKAR Bordeaux (Open Science Knowledge ARchive) Marine Geology 395 285 300 |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
Sciences de l'environnement |
spellingShingle |
Sciences de l'environnement DUCASSOU, Emmanuelle HASSAN, Rim GONTHIER, Eliane DUPRAT, Josette HANQUIEZ, Vincent MULDER, Thierry Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz |
topic_facet |
Sciences de l'environnement |
description |
This paper proposes a biostratigraphic framework for the last 50 kyr in the contourite depositional system (CDS) of the Gulf of Cádiz with a solid and independent age control, and tests the reliability of faunal-based analyses in a bottom current-dominated environment related to high current velocities. The distribution of planktonic foraminifera and pteropods has been studied in twenty-two piston cores of the Holocene and Late Pleistocene age from the Gulf of Cádiz. A detailed correlation between the cores has been made possible by a large radiocarbon and isotopic data set and a high degree of similarity of frequency changes within several species by coiling direction changes of Globorotalia truncatulinoides and Globorotalia hirsuta and by occurrences of the polar species Neogloboquadrina pachyderma and Limacina retroversa. Occurrences of these polar species are clearly related to paleoclimatic oscillations and reflect rapidly changing surface water conditions in the Gulf of Cádiz during the latest Pleistocene that have been observed regardless of sedimentation rates and sedimentary environments (contouritic drifts vs slope without bottom current influence). |
format |
Article in Journal/Newspaper |
author |
DUCASSOU, Emmanuelle HASSAN, Rim GONTHIER, Eliane DUPRAT, Josette HANQUIEZ, Vincent MULDER, Thierry |
author_facet |
DUCASSOU, Emmanuelle HASSAN, Rim GONTHIER, Eliane DUPRAT, Josette HANQUIEZ, Vincent MULDER, Thierry |
author_sort |
DUCASSOU, Emmanuelle |
title |
Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz |
title_short |
Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz |
title_full |
Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz |
title_fullStr |
Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz |
title_full_unstemmed |
Biostratigraphy of the last 50 kyr in the contourite depositional system of the Gulf of Cádiz |
title_sort |
biostratigraphy of the last 50 kyr in the contourite depositional system of the gulf of cádiz |
publishDate |
2018 |
url |
https://oskar-bordeaux.fr/handle/20.500.12278/199327 https://hdl.handle.net/20.500.12278/199327 https://doi.org/10.1016/j.margeo.2017.09.014 |
genre |
Neogloboquadrina pachyderma Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma Planktonic foraminifera |
op_source |
crossref |
op_relation |
0025-3227 oai:crossref.org:10.1016/j.margeo.2017.09.014 https://oskar-bordeaux.fr/handle/20.500.12278/199327 doi:10.1016/j.margeo.2017.09.014 |
op_rights |
open Pas de Licence CC |
op_doi |
https://doi.org/20.500.12278/19932710.1016/j.margeo.2017.09.014 |
container_title |
Marine Geology |
container_volume |
395 |
container_start_page |
285 |
op_container_end_page |
300 |
_version_ |
1799483894302507008 |