Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction
The boron isotope-pH proxy, applied to mixed-layer planktic foraminifera, has great potential for estimating past CO2 levels, which in turn is crucial to advance our understanding of how this greenhouse gas influences Earth's climate. Previous culture experiments have shown that, although the b...
Published in: | Earth and Planetary Science Letters |
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Main Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2013
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Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/calibration-of-the-boron-isotope-proxy-in-the-planktonic-foraminifera-globigerinoides-ruber-for-use-in-palaeoco2-reconstruction(93098840-a810-475d-9f08-0a1aaaca25c1).html https://doi.org/10.1016/j.epsl.2012.12.029 http://www.sciencedirect.com/science/article/pii/S0012821X12007157 |
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ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/93098840-a810-475d-9f08-0a1aaaca25c1 2023-05-15T18:00:38+02:00 Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction Henehan, Michael J. Rae, James William Buchanan Foster, Gavin L. Erez, Jonathan Prentice, Katherine C. Kucera, Michal Bostock, Helen C. Martinez-Boti, Miguel A. Milton, J. Andy Wilson, Paul A. Marshall, Brittney J. Elliott, Tim 2013-02-15 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/calibration-of-the-boron-isotope-proxy-in-the-planktonic-foraminifera-globigerinoides-ruber-for-use-in-palaeoco2-reconstruction(93098840-a810-475d-9f08-0a1aaaca25c1).html https://doi.org/10.1016/j.epsl.2012.12.029 http://www.sciencedirect.com/science/article/pii/S0012821X12007157 eng eng info:eu-repo/semantics/restrictedAccess Henehan , M J , Rae , J W B , Foster , G L , Erez , J , Prentice , K C , Kucera , M , Bostock , H C , Martinez-Boti , M A , Milton , J A , Wilson , P A , Marshall , B J & Elliott , T 2013 , ' Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction ' , Earth and Planetary Science Letters , vol. 364 , pp. 111-122 . https://doi.org/10.1016/j.epsl.2012.12.029 boron isotopes Globigerinoides ruber MC-ICPMS culture calibration pCO2 reconstruction planktic foraminifera article 2013 ftunstandrewcris https://doi.org/10.1016/j.epsl.2012.12.029 2021-12-26T14:23:12Z The boron isotope-pH proxy, applied to mixed-layer planktic foraminifera, has great potential for estimating past CO2 levels, which in turn is crucial to advance our understanding of how this greenhouse gas influences Earth's climate. Previous culture experiments have shown that, although the boron isotopic compositions of various planktic foraminifera are pH dependent, they do not agree with the aqueous geochemical basis of the proxy. Here we outline the results of culture experiments on Globigerinoides ruber (white) across a range of pH (∼7.5–8.2) and analysed via multicollector inductively-coupled plasma mass spectrometry (MC-ICPMS), and compare these data to core-top and sediment-trap samples to derive a robust new species-specific boron isotope-pH calibration. Consistent with earlier culture studies, we show a reduced pH dependency of the boron isotopic composition of symbiont-bearing planktonic foraminifera compared to borate ion in seawater. We also present evidence for a size fraction effect in the δ11B of G. ruber. Finally, we reconstruct atmospheric CO2 concentrations over the last deglacial using our new calibration at two equatorial sites, ODP Site 999A and Site GeoB1523-1. These data provide further grounding for the application of the boron isotope-pH proxy in reconstructions of past atmospheric CO2 levels. Article in Journal/Newspaper Planktonic foraminifera University of St Andrews: Research Portal Earth and Planetary Science Letters 364 111 122 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
boron isotopes Globigerinoides ruber MC-ICPMS culture calibration pCO2 reconstruction planktic foraminifera |
spellingShingle |
boron isotopes Globigerinoides ruber MC-ICPMS culture calibration pCO2 reconstruction planktic foraminifera Henehan, Michael J. Rae, James William Buchanan Foster, Gavin L. Erez, Jonathan Prentice, Katherine C. Kucera, Michal Bostock, Helen C. Martinez-Boti, Miguel A. Milton, J. Andy Wilson, Paul A. Marshall, Brittney J. Elliott, Tim Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction |
topic_facet |
boron isotopes Globigerinoides ruber MC-ICPMS culture calibration pCO2 reconstruction planktic foraminifera |
description |
The boron isotope-pH proxy, applied to mixed-layer planktic foraminifera, has great potential for estimating past CO2 levels, which in turn is crucial to advance our understanding of how this greenhouse gas influences Earth's climate. Previous culture experiments have shown that, although the boron isotopic compositions of various planktic foraminifera are pH dependent, they do not agree with the aqueous geochemical basis of the proxy. Here we outline the results of culture experiments on Globigerinoides ruber (white) across a range of pH (∼7.5–8.2) and analysed via multicollector inductively-coupled plasma mass spectrometry (MC-ICPMS), and compare these data to core-top and sediment-trap samples to derive a robust new species-specific boron isotope-pH calibration. Consistent with earlier culture studies, we show a reduced pH dependency of the boron isotopic composition of symbiont-bearing planktonic foraminifera compared to borate ion in seawater. We also present evidence for a size fraction effect in the δ11B of G. ruber. Finally, we reconstruct atmospheric CO2 concentrations over the last deglacial using our new calibration at two equatorial sites, ODP Site 999A and Site GeoB1523-1. These data provide further grounding for the application of the boron isotope-pH proxy in reconstructions of past atmospheric CO2 levels. |
format |
Article in Journal/Newspaper |
author |
Henehan, Michael J. Rae, James William Buchanan Foster, Gavin L. Erez, Jonathan Prentice, Katherine C. Kucera, Michal Bostock, Helen C. Martinez-Boti, Miguel A. Milton, J. Andy Wilson, Paul A. Marshall, Brittney J. Elliott, Tim |
author_facet |
Henehan, Michael J. Rae, James William Buchanan Foster, Gavin L. Erez, Jonathan Prentice, Katherine C. Kucera, Michal Bostock, Helen C. Martinez-Boti, Miguel A. Milton, J. Andy Wilson, Paul A. Marshall, Brittney J. Elliott, Tim |
author_sort |
Henehan, Michael J. |
title |
Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction |
title_short |
Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction |
title_full |
Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction |
title_fullStr |
Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction |
title_full_unstemmed |
Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction |
title_sort |
calibration of the boron isotope proxy in the planktonic foraminifera globigerinoides ruber for use in palaeo-co 2 reconstruction |
publishDate |
2013 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/calibration-of-the-boron-isotope-proxy-in-the-planktonic-foraminifera-globigerinoides-ruber-for-use-in-palaeoco2-reconstruction(93098840-a810-475d-9f08-0a1aaaca25c1).html https://doi.org/10.1016/j.epsl.2012.12.029 http://www.sciencedirect.com/science/article/pii/S0012821X12007157 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Henehan , M J , Rae , J W B , Foster , G L , Erez , J , Prentice , K C , Kucera , M , Bostock , H C , Martinez-Boti , M A , Milton , J A , Wilson , P A , Marshall , B J & Elliott , T 2013 , ' Calibration of the Boron Isotope Proxy in the Planktonic Foraminifera Globigerinoides ruber for use in palaeo-CO 2 reconstruction ' , Earth and Planetary Science Letters , vol. 364 , pp. 111-122 . https://doi.org/10.1016/j.epsl.2012.12.029 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2012.12.029 |
container_title |
Earth and Planetary Science Letters |
container_volume |
364 |
container_start_page |
111 |
op_container_end_page |
122 |
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1766169810695094272 |