Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications
The upper 200 m of the sediments recovered during IODP Leg 302, the Arctic Coring Expedition (ACEX), to the Lomonosov Ridge in the central Arctic Ocean consist almost exclusively of detrital material. The scarcity of biostratigraphic markers severely complicates the establishment of a reliable chron...
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American Geophysical Union
2008
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:7528 2023-05-15T14:27:08+02:00 Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications Frank, M. Backman, J. Jakobsson, M. Moran, K. O'Regan, Matthew King, J Haley, B. A. Kubik, P. W. Garbe-Schonberg, D. 2008-02-20 application/pdf https://orca.cardiff.ac.uk/id/eprint/7528/ https://orca.cardiff.ac.uk/id/eprint/7528/1/Frank%202008.pdf https://doi.org/10.1029/2007PA001478 en eng American Geophysical Union https://orca.cardiff.ac.uk/id/eprint/7528/1/Frank%202008.pdf Frank, M., Backman, J., Jakobsson, M., Moran, K., O'Regan, Matthew, King, J, Haley, B. A., Kubik, P. W. and Garbe-Schonberg, D. 2008. Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications. Paleoceanography 23 (1) , PA1S02. 10.1029/2007PA001478 https://doi.org/10.1029/2007PA001478 file https://orca.cardiff.ac.uk/7528/1/Frank%202008.pdf doi:10.1029/2007PA001478 QE Geology Article PeerReviewed 2008 ftunivcardiff https://doi.org/10.1029/2007PA001478 2022-09-25T20:16:07Z The upper 200 m of the sediments recovered during IODP Leg 302, the Arctic Coring Expedition (ACEX), to the Lomonosov Ridge in the central Arctic Ocean consist almost exclusively of detrital material. The scarcity of biostratigraphic markers severely complicates the establishment of a reliable chronostratigraphic framework for these sediments, which contain the first continuous record of the Neogene environmental and climatic evolution of the Arctic region. Here we present profiles of cosmogenic 10Be together with the seawater-derived fraction of stable 9Be obtained from the ACEX cores. The down-core decrease of 10Be/9Be provides an average sedimentation rate of 14.5 ± 1 m/Ma for the uppermost 151 m of the ACEX record and allows the establishment of a chronostratigraphy for the past 12.3 Ma. The age-corrected 10Be concentrations and 10Be/9Be ratios suggest the existence of an essentially continuous sea ice cover over the past 12.3 Ma. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Lomonosov Ridge Sea ice Cardiff University: ORCA (Online Research @ Cardiff) Arctic Arctic Ocean Paleoceanography 23 1 n/a n/a |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
topic |
QE Geology |
spellingShingle |
QE Geology Frank, M. Backman, J. Jakobsson, M. Moran, K. O'Regan, Matthew King, J Haley, B. A. Kubik, P. W. Garbe-Schonberg, D. Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications |
topic_facet |
QE Geology |
description |
The upper 200 m of the sediments recovered during IODP Leg 302, the Arctic Coring Expedition (ACEX), to the Lomonosov Ridge in the central Arctic Ocean consist almost exclusively of detrital material. The scarcity of biostratigraphic markers severely complicates the establishment of a reliable chronostratigraphic framework for these sediments, which contain the first continuous record of the Neogene environmental and climatic evolution of the Arctic region. Here we present profiles of cosmogenic 10Be together with the seawater-derived fraction of stable 9Be obtained from the ACEX cores. The down-core decrease of 10Be/9Be provides an average sedimentation rate of 14.5 ± 1 m/Ma for the uppermost 151 m of the ACEX record and allows the establishment of a chronostratigraphy for the past 12.3 Ma. The age-corrected 10Be concentrations and 10Be/9Be ratios suggest the existence of an essentially continuous sea ice cover over the past 12.3 Ma. |
format |
Article in Journal/Newspaper |
author |
Frank, M. Backman, J. Jakobsson, M. Moran, K. O'Regan, Matthew King, J Haley, B. A. Kubik, P. W. Garbe-Schonberg, D. |
author_facet |
Frank, M. Backman, J. Jakobsson, M. Moran, K. O'Regan, Matthew King, J Haley, B. A. Kubik, P. W. Garbe-Schonberg, D. |
author_sort |
Frank, M. |
title |
Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications |
title_short |
Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications |
title_full |
Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications |
title_fullStr |
Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications |
title_full_unstemmed |
Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications |
title_sort |
beryllium isotopes in central arctic ocean sediments over the past 12.3 million years: stratigraphic and paleoclimatic implications |
publisher |
American Geophysical Union |
publishDate |
2008 |
url |
https://orca.cardiff.ac.uk/id/eprint/7528/ https://orca.cardiff.ac.uk/id/eprint/7528/1/Frank%202008.pdf https://doi.org/10.1029/2007PA001478 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Lomonosov Ridge Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Lomonosov Ridge Sea ice |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/7528/1/Frank%202008.pdf Frank, M., Backman, J., Jakobsson, M., Moran, K., O'Regan, Matthew, King, J, Haley, B. A., Kubik, P. W. and Garbe-Schonberg, D. 2008. Beryllium isotopes in central Arctic Ocean sediments over the past 12.3 million years: Stratigraphic and paleoclimatic implications. Paleoceanography 23 (1) , PA1S02. 10.1029/2007PA001478 https://doi.org/10.1029/2007PA001478 file https://orca.cardiff.ac.uk/7528/1/Frank%202008.pdf doi:10.1029/2007PA001478 |
op_doi |
https://doi.org/10.1029/2007PA001478 |
container_title |
Paleoceanography |
container_volume |
23 |
container_issue |
1 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766300732473999360 |