Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca
Sr/Ca ratios were measured on eight species of planktonic foraminifera from a core top transect of the North Atlantic. Five of the species (Globigerinoides ruber, Globigerina bulloides, Neogloboquadrina pachyderma, Globigerinoides sacculifer, Globigerinella siphonifera) show remarkably little within...
Published in: | Geochemistry, Geophysics, Geosystems |
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Language: | English |
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Blackwell Publishing Ltd
2000
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Online Access: | https://espace.library.uq.edu.au/view/UQ:d8f9956 |
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:d8f9956 2023-05-15T17:14:58+02:00 Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca Elderfield, H. Cooper, M. Ganssen, G. 2000-11-01 https://espace.library.uq.edu.au/view/UQ:d8f9956 eng eng Blackwell Publishing Ltd doi:10.1029/1999GC000031 issn:1525-2027 orcid:0000-0003-3147-3460 calcium foraminifera planktonic Strontium 1906 Geochemistry and Petrology 1908 Geophysics Journal Article 2000 ftunivqespace https://doi.org/10.1029/1999GC000031 2020-11-10T01:23:33Z Sr/Ca ratios were measured on eight species of planktonic foraminifera from a core top transect of the North Atlantic. Five of the species (Globigerinoides ruber, Globigerina bulloides, Neogloboquadrina pachyderma, Globigerinoides sacculifer, Globigerinella siphonifera) show remarkably little within-species variability in Sr/Ca (1.2 ± 0.1%). Three globorotaliid species (Globorotalia hirsuta, Globorotalia inflata, Globorotalia truncatulinoides) show somewhat greater variability (3-7%). Interspecies variations are of ∼10%. The variability in globorotaliid Sr/Ca is explained either by a greater temperature sensitivity than for other species or by depth-dependent dissolution. Other than this effect, the overwhelming control on foraminiferal Sr/Ca appears to be seawater Sr/Ca. In contrast, time series Sr/Ca records of four species from a North Atlantic sediment core over a glacial-interglacial cycle show very significant differences. N. pachyderma shows large-amplitude changes in Sr/Ca (9.7%), in phase with δO, whereas G. ruber shows the smallest amplitude changes (2.6%) out of phase with δO and most similar to model predictions for temporal changes in seawater Sr/Ca. Records of G. inflata and G. bulloides are intermediate (amplitude changes of 3.3-4.7%) and out of phase with δO. The lack of coherence in the time series records between the species shows that factors in additional to changing seawater Sr/Ca must affect planktonic foraminiferal Sr/Ca. Article in Journal/Newspaper Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera The University of Queensland: UQ eSpace Geochemistry, Geophysics, Geosystems 1 11 n/a n/a |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
calcium foraminifera planktonic Strontium 1906 Geochemistry and Petrology 1908 Geophysics |
spellingShingle |
calcium foraminifera planktonic Strontium 1906 Geochemistry and Petrology 1908 Geophysics Elderfield, H. Cooper, M. Ganssen, G. Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca |
topic_facet |
calcium foraminifera planktonic Strontium 1906 Geochemistry and Petrology 1908 Geophysics |
description |
Sr/Ca ratios were measured on eight species of planktonic foraminifera from a core top transect of the North Atlantic. Five of the species (Globigerinoides ruber, Globigerina bulloides, Neogloboquadrina pachyderma, Globigerinoides sacculifer, Globigerinella siphonifera) show remarkably little within-species variability in Sr/Ca (1.2 ± 0.1%). Three globorotaliid species (Globorotalia hirsuta, Globorotalia inflata, Globorotalia truncatulinoides) show somewhat greater variability (3-7%). Interspecies variations are of ∼10%. The variability in globorotaliid Sr/Ca is explained either by a greater temperature sensitivity than for other species or by depth-dependent dissolution. Other than this effect, the overwhelming control on foraminiferal Sr/Ca appears to be seawater Sr/Ca. In contrast, time series Sr/Ca records of four species from a North Atlantic sediment core over a glacial-interglacial cycle show very significant differences. N. pachyderma shows large-amplitude changes in Sr/Ca (9.7%), in phase with δO, whereas G. ruber shows the smallest amplitude changes (2.6%) out of phase with δO and most similar to model predictions for temporal changes in seawater Sr/Ca. Records of G. inflata and G. bulloides are intermediate (amplitude changes of 3.3-4.7%) and out of phase with δO. The lack of coherence in the time series records between the species shows that factors in additional to changing seawater Sr/Ca must affect planktonic foraminiferal Sr/Ca. |
format |
Article in Journal/Newspaper |
author |
Elderfield, H. Cooper, M. Ganssen, G. |
author_facet |
Elderfield, H. Cooper, M. Ganssen, G. |
author_sort |
Elderfield, H. |
title |
Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca |
title_short |
Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca |
title_full |
Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca |
title_fullStr |
Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca |
title_full_unstemmed |
Sr/Ca in multiple species of planktonic foraminifera: Implications for reconstructions of seawater Sr/Ca |
title_sort |
sr/ca in multiple species of planktonic foraminifera: implications for reconstructions of seawater sr/ca |
publisher |
Blackwell Publishing Ltd |
publishDate |
2000 |
url |
https://espace.library.uq.edu.au/view/UQ:d8f9956 |
genre |
Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
genre_facet |
Neogloboquadrina pachyderma North Atlantic Planktonic foraminifera |
op_relation |
doi:10.1029/1999GC000031 issn:1525-2027 orcid:0000-0003-3147-3460 |
op_doi |
https://doi.org/10.1029/1999GC000031 |
container_title |
Geochemistry, Geophysics, Geosystems |
container_volume |
1 |
container_issue |
11 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1766073089837236224 |