Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession
Geomagnetic dipole moment (GDM) lows associated with polarity reversals or geomagnetic excursions induce significant modulation of the cosmogenic nuclide Beryllium-10 (10Be) production. Hence, the reconstruction of atmospheric 10Be production rates from natural archives such as marine sedimentary se...
Published in: | Earth and Planetary Science Letters |
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Online Access: | http://hdl.handle.net/11586/183988 https://doi.org/10.1016/j.epsl.2016.11.052 |
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ftunivbari:oai:ricerca.uniba.it:11586/183988 2024-02-11T10:04:48+01:00 Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession Simon, Quentin Didier L. Bourlès Bassinot, Franck Nomade, Sébastien Marino, Maria Ciaranfi, Neri Girone, Angela Maiorano, Patrizia Thouveny, Nicolas Choy, Sandrine Dewilde, Fabien Scao, Vincent Isguder, Gulay Blamart, Dominique ASTER, Team Simon, Quentin Didier L., Bourlè Bassinot, Franck Nomade, Sébastien Marino, Maria Ciaranfi, Neri Girone, Angela Maiorano, Patrizia Thouveny, Nicola Choy, Sandrine Dewilde, Fabien Scao, Vincent Isguder, Gulay Blamart, Dominique Aster, Team 2017 http://hdl.handle.net/11586/183988 https://doi.org/10.1016/j.epsl.2016.11.052 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000393008500027 volume:460 firstpage:255 lastpage:267 numberofpages:13 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/11586/183988 doi:10.1016/j.epsl.2016.11.052 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85027933892 info:eu-repo/semantics/closedAccess 10Be cosmogenic nuclide authigenic 10Be/9Be ratio Matuyama–Brunhes Boundary (MBB) high-resolution oxygen isotope stratigraphy MIS 19 GSSP stratotype info:eu-repo/semantics/article 2017 ftunivbari https://doi.org/10.1016/j.epsl.2016.11.052 2024-01-24T17:36:12Z Geomagnetic dipole moment (GDM) lows associated with polarity reversals or geomagnetic excursions induce significant modulation of the cosmogenic nuclide Beryllium-10 (10Be) production. Hence, the reconstruction of atmospheric 10Be production rates from natural archives such as marine sedimentary sequences or ice cores constitutes a complementary approach, independent from paleomagnetic measurements, to decipher past GDM fluctuations. This is particularly important in the Montalbano Jonico succession (South Italy) since it is candidate to host the Global Stratotype Section and Point of the Middle Pleistocene Stage but where the magnetostratigraphic positioning of the Matuyama–Brunhes boundary (MBB) has not been available up to now. This study presents (1) original authigenic 10Be cosmogenic nuclide and 9Be stable isotope results, and (2) new high-resolution benthic oxygen isotope record covering termination IX and Marine Isotope Stage (MIS) 19. A robust chronological framework is established on the basis of (i) our oxygen isotope stratigraphy, using the strong analogies between MIS 1 and MIS 19c in terms of orbital forcing and CO2level, and (ii) one precise 40Ar/39Ar date obtained in the tephra layer V4. The authigenic 10Be/9Be ratio record marks the atmospheric 10Be overproduction linked to the dipole low accompanying the MBB transition, with a characteristic twofold increase of the 10Be production at the end of MIS 19c and early MIS 19b. This signature is similar to those described in both marine and ice core records. The detailed chronostratigraphy constrained by a radiometrically-dated tephra layer (773.9 ±1.3ka) within the MBB interval, makesit possible to discuss the structure and to assess the timing of the 10Be-production changes, and thus the MBB geomagnetic variations, with an unprecedented accuracy for a marine archive (sedimentation rates ∼80cm/ka). These new cosmogenic nuclide production signatures provide the only missing constraint required for retaining the Montalbano Jonico succession as a ... Article in Journal/Newspaper ice core Università degli Studi di Bari Aldo Moro: CINECA IRIS Earth and Planetary Science Letters 460 255 267 |
institution |
Open Polar |
collection |
Università degli Studi di Bari Aldo Moro: CINECA IRIS |
op_collection_id |
ftunivbari |
language |
English |
topic |
10Be cosmogenic nuclide authigenic 10Be/9Be ratio Matuyama–Brunhes Boundary (MBB) high-resolution oxygen isotope stratigraphy MIS 19 GSSP stratotype |
spellingShingle |
10Be cosmogenic nuclide authigenic 10Be/9Be ratio Matuyama–Brunhes Boundary (MBB) high-resolution oxygen isotope stratigraphy MIS 19 GSSP stratotype Simon, Quentin Didier L. Bourlès Bassinot, Franck Nomade, Sébastien Marino, Maria Ciaranfi, Neri Girone, Angela Maiorano, Patrizia Thouveny, Nicolas Choy, Sandrine Dewilde, Fabien Scao, Vincent Isguder, Gulay Blamart, Dominique ASTER, Team Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession |
topic_facet |
10Be cosmogenic nuclide authigenic 10Be/9Be ratio Matuyama–Brunhes Boundary (MBB) high-resolution oxygen isotope stratigraphy MIS 19 GSSP stratotype |
description |
Geomagnetic dipole moment (GDM) lows associated with polarity reversals or geomagnetic excursions induce significant modulation of the cosmogenic nuclide Beryllium-10 (10Be) production. Hence, the reconstruction of atmospheric 10Be production rates from natural archives such as marine sedimentary sequences or ice cores constitutes a complementary approach, independent from paleomagnetic measurements, to decipher past GDM fluctuations. This is particularly important in the Montalbano Jonico succession (South Italy) since it is candidate to host the Global Stratotype Section and Point of the Middle Pleistocene Stage but where the magnetostratigraphic positioning of the Matuyama–Brunhes boundary (MBB) has not been available up to now. This study presents (1) original authigenic 10Be cosmogenic nuclide and 9Be stable isotope results, and (2) new high-resolution benthic oxygen isotope record covering termination IX and Marine Isotope Stage (MIS) 19. A robust chronological framework is established on the basis of (i) our oxygen isotope stratigraphy, using the strong analogies between MIS 1 and MIS 19c in terms of orbital forcing and CO2level, and (ii) one precise 40Ar/39Ar date obtained in the tephra layer V4. The authigenic 10Be/9Be ratio record marks the atmospheric 10Be overproduction linked to the dipole low accompanying the MBB transition, with a characteristic twofold increase of the 10Be production at the end of MIS 19c and early MIS 19b. This signature is similar to those described in both marine and ice core records. The detailed chronostratigraphy constrained by a radiometrically-dated tephra layer (773.9 ±1.3ka) within the MBB interval, makesit possible to discuss the structure and to assess the timing of the 10Be-production changes, and thus the MBB geomagnetic variations, with an unprecedented accuracy for a marine archive (sedimentation rates ∼80cm/ka). These new cosmogenic nuclide production signatures provide the only missing constraint required for retaining the Montalbano Jonico succession as a ... |
author2 |
Simon, Quentin Didier L., Bourlè Bassinot, Franck Nomade, Sébastien Marino, Maria Ciaranfi, Neri Girone, Angela Maiorano, Patrizia Thouveny, Nicola Choy, Sandrine Dewilde, Fabien Scao, Vincent Isguder, Gulay Blamart, Dominique Aster, Team |
format |
Article in Journal/Newspaper |
author |
Simon, Quentin Didier L. Bourlès Bassinot, Franck Nomade, Sébastien Marino, Maria Ciaranfi, Neri Girone, Angela Maiorano, Patrizia Thouveny, Nicolas Choy, Sandrine Dewilde, Fabien Scao, Vincent Isguder, Gulay Blamart, Dominique ASTER, Team |
author_facet |
Simon, Quentin Didier L. Bourlès Bassinot, Franck Nomade, Sébastien Marino, Maria Ciaranfi, Neri Girone, Angela Maiorano, Patrizia Thouveny, Nicolas Choy, Sandrine Dewilde, Fabien Scao, Vincent Isguder, Gulay Blamart, Dominique ASTER, Team |
author_sort |
Simon, Quentin |
title |
Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession |
title_short |
Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession |
title_full |
Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession |
title_fullStr |
Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession |
title_full_unstemmed |
Authigenic 10Be/9Be ratio signature of the Matuyama–Brunhes boundary in the Montalbano Jonico marine succession |
title_sort |
authigenic 10be/9be ratio signature of the matuyama–brunhes boundary in the montalbano jonico marine succession |
publishDate |
2017 |
url |
http://hdl.handle.net/11586/183988 https://doi.org/10.1016/j.epsl.2016.11.052 |
genre |
ice core |
genre_facet |
ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000393008500027 volume:460 firstpage:255 lastpage:267 numberofpages:13 journal:EARTH AND PLANETARY SCIENCE LETTERS http://hdl.handle.net/11586/183988 doi:10.1016/j.epsl.2016.11.052 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85027933892 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2016.11.052 |
container_title |
Earth and Planetary Science Letters |
container_volume |
460 |
container_start_page |
255 |
op_container_end_page |
267 |
_version_ |
1790601548992086016 |