Deep ocean carbonate ion increase during mid Miocene CO2 decline
Supplementary information available at http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html#supplementary-information Characterised by long term cooling and abrupt ice sheet expansion on Antarctica ~14 Ma ago, the mid Miocene marked the beginning of the modern ice-house world, yet th...
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ftleicester:oai:lra.le.ac.uk:2381/32005 2023-05-15T14:03:42+02:00 Deep ocean carbonate ion increase during mid Miocene CO2 decline Kender, Sev Yu, J. Peck, V. L. 2015-04-16T09:25:05Z http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html http://hdl.handle.net/2381/32005 https://doi.org/10.1038/srep04187 en eng Nature Publishing Group Scientific Reports 4, Article number: 4187 2045-2322 http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html http://hdl.handle.net/2381/32005 doi:10.1038/srep04187 This work is licensed under a Creative Commons Attribution 3.0 Unported License (CC BY 3.0). To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ CC-BY Palaeoceanography Palaeoclimate Marine chemistry Geology Journal Article Article 2015 ftleicester https://doi.org/10.1038/srep04187 2019-03-22T20:20:12Z Supplementary information available at http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html#supplementary-information Characterised by long term cooling and abrupt ice sheet expansion on Antarctica ~14 Ma ago, the mid Miocene marked the beginning of the modern ice-house world, yet there is still little consensus on its causes, in part because carbon cycle dynamics are not well constrained. In particular, changes in carbonate ion concentration ([CO32−]) in the ocean, the largest carbon reservoir of the ocean-land-atmosphere system, are poorly resolved. We use benthic foraminiferal B/Ca ratios to reconstruct relative changes in [CO32−] from the South Atlantic, East Pacific, and Southern Oceans. Our results suggest an increase of perhaps ~40 μmol/kg may have occurred between ~15 and 14 Ma in intermediate to deep waters in each basin. This long-term increase suggests elevated alkalinity input, perhaps from the Himalaya, rather than other shorter-term mechanisms such as ocean circulation or ecological changes, and may account for some of the proposed atmospheric CO2 decline before ~14 Ma. This study is part of the Palaeoclimate and Palaeoenvironment core science programme at the British Geological Survey, funded by the Natural Environment Research Council (S.K., V.P.) and by grant ARC DP140101393 (J.Y.) Peer-reviewed Publisher Version Article in Journal/Newspaper Antarc* Antarctica Ice Sheet University of Leicester: Leicester Research Archive (LRA) Pacific Scientific Reports 4 1 |
institution |
Open Polar |
collection |
University of Leicester: Leicester Research Archive (LRA) |
op_collection_id |
ftleicester |
language |
English |
topic |
Palaeoceanography Palaeoclimate Marine chemistry Geology |
spellingShingle |
Palaeoceanography Palaeoclimate Marine chemistry Geology Kender, Sev Yu, J. Peck, V. L. Deep ocean carbonate ion increase during mid Miocene CO2 decline |
topic_facet |
Palaeoceanography Palaeoclimate Marine chemistry Geology |
description |
Supplementary information available at http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html#supplementary-information Characterised by long term cooling and abrupt ice sheet expansion on Antarctica ~14 Ma ago, the mid Miocene marked the beginning of the modern ice-house world, yet there is still little consensus on its causes, in part because carbon cycle dynamics are not well constrained. In particular, changes in carbonate ion concentration ([CO32−]) in the ocean, the largest carbon reservoir of the ocean-land-atmosphere system, are poorly resolved. We use benthic foraminiferal B/Ca ratios to reconstruct relative changes in [CO32−] from the South Atlantic, East Pacific, and Southern Oceans. Our results suggest an increase of perhaps ~40 μmol/kg may have occurred between ~15 and 14 Ma in intermediate to deep waters in each basin. This long-term increase suggests elevated alkalinity input, perhaps from the Himalaya, rather than other shorter-term mechanisms such as ocean circulation or ecological changes, and may account for some of the proposed atmospheric CO2 decline before ~14 Ma. This study is part of the Palaeoclimate and Palaeoenvironment core science programme at the British Geological Survey, funded by the Natural Environment Research Council (S.K., V.P.) and by grant ARC DP140101393 (J.Y.) Peer-reviewed Publisher Version |
format |
Article in Journal/Newspaper |
author |
Kender, Sev Yu, J. Peck, V. L. |
author_facet |
Kender, Sev Yu, J. Peck, V. L. |
author_sort |
Kender, Sev |
title |
Deep ocean carbonate ion increase during mid Miocene CO2 decline |
title_short |
Deep ocean carbonate ion increase during mid Miocene CO2 decline |
title_full |
Deep ocean carbonate ion increase during mid Miocene CO2 decline |
title_fullStr |
Deep ocean carbonate ion increase during mid Miocene CO2 decline |
title_full_unstemmed |
Deep ocean carbonate ion increase during mid Miocene CO2 decline |
title_sort |
deep ocean carbonate ion increase during mid miocene co2 decline |
publisher |
Nature Publishing Group |
publishDate |
2015 |
url |
http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html http://hdl.handle.net/2381/32005 https://doi.org/10.1038/srep04187 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_relation |
Scientific Reports 4, Article number: 4187 2045-2322 http://www.nature.com/srep/2014/140226/srep04187/full/srep04187.html http://hdl.handle.net/2381/32005 doi:10.1038/srep04187 |
op_rights |
This work is licensed under a Creative Commons Attribution 3.0 Unported License (CC BY 3.0). To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/srep04187 |
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Scientific Reports |
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4 |
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1 |
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1766274517829681152 |