Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments
International audience We studied four marine sediment records of the Matuyama-Brunhes geomagnetic reversal from four sites located in the Indian, Atlantic and western Pacific oceans. The results combine paleomagnetic, cosmogenic nuclide beryllium (Be-10) and oxygen isotope analyses that were perfor...
Published in: | Earth and Planetary Science Letters |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Subjects: | |
Online Access: | https://hal.inrae.fr/hal-02629188 https://hal.inrae.fr/hal-02629188/document https://hal.inrae.fr/hal-02629188/file/1-s2.0-S0012821X18306630-main.pdf https://doi.org/10.1016/j.epsl.2018.11.012 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
stratigraphy field intensity Be-ratio Brunhes-Matuyama magnetic reversal [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
spellingShingle |
stratigraphy field intensity Be-ratio Brunhes-Matuyama magnetic reversal [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences Valet, Jean-Pierre Bassinot, Franck Simon, Quentin Savranskaia, Tatiana Thouveny, Nicolas Bourlès, Didier Villedieu, Anouk Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments |
topic_facet |
stratigraphy field intensity Be-ratio Brunhes-Matuyama magnetic reversal [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
description |
International audience We studied four marine sediment records of the Matuyama-Brunhes geomagnetic reversal from four sites located in the Indian, Atlantic and western Pacific oceans. The results combine paleomagnetic, cosmogenic nuclide beryllium (Be-10) and oxygen isotope analyses that were performed on the same samples in order to avoid any stratigraphic bias. The three records from the equatorial Indian Ocean and North Atlantic Ocean did not reveal any offset between the authigenic Be-10/Be-9 ratio (Be-ratio) peak and the interval of low relative paleointensity (RPI) that characterizes the reversal. The lower and upper limits of transitional directions are also concomitant with the increased atmospheric Be-10 production that accompanied the geomagnetic dipole intensity decrease. In contrast, the record from western equatorial Pacific Ocean sediments was found 18 cm below the Be-ratio changes as a result of late magnetization acquisition. At all four sites, maximum Be-10 production occurred at the same period soon after the maximum of Marine Isotope Stage 19 (MIS 19) and, therefore, indicates its synchronous worldwide character. Such features are effectively observed from the Be-ratio signals and their relationship with the magnetic transition interval, which further confirms the synchronous character of the transition. Taking all dating uncertainties (1.6 ka between sites and 5 ka for the age model) into consideration, our records suggest a mean reversal age of 772.4 +/- 6.6 ka. The age of the transition in the Atlantic Ocean record is closer to 774 ka but this difference is within the limit of significance. |
author2 |
Institut de Physique du Globe de Paris (IPGP) Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA) European Project: 339899,EC:FP7:ERC,ERC-2013-ADG,EDIFICE(2014) |
format |
Article in Journal/Newspaper |
author |
Valet, Jean-Pierre Bassinot, Franck Simon, Quentin Savranskaia, Tatiana Thouveny, Nicolas Bourlès, Didier Villedieu, Anouk |
author_facet |
Valet, Jean-Pierre Bassinot, Franck Simon, Quentin Savranskaia, Tatiana Thouveny, Nicolas Bourlès, Didier Villedieu, Anouk |
author_sort |
Valet, Jean-Pierre |
title |
Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments |
title_short |
Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments |
title_full |
Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments |
title_fullStr |
Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments |
title_full_unstemmed |
Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments |
title_sort |
constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of atlantic, indian, and pacific ocean sediments |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.inrae.fr/hal-02629188 https://hal.inrae.fr/hal-02629188/document https://hal.inrae.fr/hal-02629188/file/1-s2.0-S0012821X18306630-main.pdf https://doi.org/10.1016/j.epsl.2018.11.012 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0012-821X Earth and Planetary Science Letters https://hal.inrae.fr/hal-02629188 Earth and Planetary Science Letters, Elsevier, 2019, 506, pp.323-331. ⟨10.1016/j.epsl.2018.11.012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2018.11.012 info:eu-repo/grantAgreement/EC/FP7/339899/EU/Changes in the geomagnetic dipole (Earth Dipole Field Intensity from Cosmogenic Elements)/EDIFICE hal-02629188 https://hal.inrae.fr/hal-02629188 https://hal.inrae.fr/hal-02629188/document https://hal.inrae.fr/hal-02629188/file/1-s2.0-S0012821X18306630-main.pdf doi:10.1016/j.epsl.2018.11.012 PRODINRA: 467100 WOS: 000455693800030 |
op_rights |
http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess |
op_rightsnorm |
CC-BY-ND |
op_doi |
https://doi.org/10.1016/j.epsl.2018.11.012 |
container_title |
Earth and Planetary Science Letters |
container_volume |
506 |
container_start_page |
323 |
op_container_end_page |
331 |
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1766134675470811136 |
spelling |
ftccsdartic:oai:HAL:hal-02629188v1 2023-05-15T17:35:30+02:00 Constraining the age of the last geomagnetic reversal from geochemical and magnetic analyses of Atlantic, Indian, and Pacific Ocean sediments Valet, Jean-Pierre Bassinot, Franck Simon, Quentin Savranskaia, Tatiana Thouveny, Nicolas Bourlès, Didier Villedieu, Anouk Institut de Physique du Globe de Paris (IPGP) Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Paléocéanographie (PALEOCEAN) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Collège de France (CdF (institution))-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA) European Project: 339899,EC:FP7:ERC,ERC-2013-ADG,EDIFICE(2014) 2019 https://hal.inrae.fr/hal-02629188 https://hal.inrae.fr/hal-02629188/document https://hal.inrae.fr/hal-02629188/file/1-s2.0-S0012821X18306630-main.pdf https://doi.org/10.1016/j.epsl.2018.11.012 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.epsl.2018.11.012 info:eu-repo/grantAgreement/EC/FP7/339899/EU/Changes in the geomagnetic dipole (Earth Dipole Field Intensity from Cosmogenic Elements)/EDIFICE hal-02629188 https://hal.inrae.fr/hal-02629188 https://hal.inrae.fr/hal-02629188/document https://hal.inrae.fr/hal-02629188/file/1-s2.0-S0012821X18306630-main.pdf doi:10.1016/j.epsl.2018.11.012 PRODINRA: 467100 WOS: 000455693800030 http://creativecommons.org/licenses/by-nd/ info:eu-repo/semantics/OpenAccess CC-BY-ND ISSN: 0012-821X Earth and Planetary Science Letters https://hal.inrae.fr/hal-02629188 Earth and Planetary Science Letters, Elsevier, 2019, 506, pp.323-331. ⟨10.1016/j.epsl.2018.11.012⟩ stratigraphy field intensity Be-ratio Brunhes-Matuyama magnetic reversal [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1016/j.epsl.2018.11.012 2021-12-19T00:58:30Z International audience We studied four marine sediment records of the Matuyama-Brunhes geomagnetic reversal from four sites located in the Indian, Atlantic and western Pacific oceans. The results combine paleomagnetic, cosmogenic nuclide beryllium (Be-10) and oxygen isotope analyses that were performed on the same samples in order to avoid any stratigraphic bias. The three records from the equatorial Indian Ocean and North Atlantic Ocean did not reveal any offset between the authigenic Be-10/Be-9 ratio (Be-ratio) peak and the interval of low relative paleointensity (RPI) that characterizes the reversal. The lower and upper limits of transitional directions are also concomitant with the increased atmospheric Be-10 production that accompanied the geomagnetic dipole intensity decrease. In contrast, the record from western equatorial Pacific Ocean sediments was found 18 cm below the Be-ratio changes as a result of late magnetization acquisition. At all four sites, maximum Be-10 production occurred at the same period soon after the maximum of Marine Isotope Stage 19 (MIS 19) and, therefore, indicates its synchronous worldwide character. Such features are effectively observed from the Be-ratio signals and their relationship with the magnetic transition interval, which further confirms the synchronous character of the transition. Taking all dating uncertainties (1.6 ka between sites and 5 ka for the age model) into consideration, our records suggest a mean reversal age of 772.4 +/- 6.6 ka. The age of the transition in the Atlantic Ocean record is closer to 774 ka but this difference is within the limit of significance. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Indian Pacific Earth and Planetary Science Letters 506 323 331 |