Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423
Measurements of Sr/Ca of benthic foraminifera show a linear decrease with water depth which is superimposed upon significant variability identified by analyses of individual foraminifera. New data for Cd/Ca support previous work in defining a contrast between waters shallower and deeper than ~2500 m...
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ftdatacite:10.1594/pangaea.708384 2023-05-15T18:01:02+02:00 Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 Elderfield, Henry Bertram, Caroline J Erez, Jonathan 1996 application/zip https://dx.doi.org/10.1594/pangaea.708384 https://doi.pangaea.de/10.1594/PANGAEA.708384 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/0012-821x(96)00105-7 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Kasten corer Box corer Piston corer D184 NEAP V22 V27 Discovery 1962 Charles Darwin Vema Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS Collection article Supplementary Collection of Datasets 1996 ftdatacite https://doi.org/10.1594/pangaea.708384 https://doi.org/10.1016/0012-821x(96)00105-7 2021-11-05T12:55:41Z Measurements of Sr/Ca of benthic foraminifera show a linear decrease with water depth which is superimposed upon significant variability identified by analyses of individual foraminifera. New data for Cd/Ca support previous work in defining a contrast between waters shallower and deeper than ~2500 m. Measured element partition coefficients in foraminiferal calcium carbonate relative to sea water (D) have been described by means of a one-box model in which elements are extracted by Rayleigh distillation from a biomineralization reservoir that serves for calcification with a constant fractionation factor (alpha), such that D = (1 - f**alpha)/(l - f), where f is the proportion of Ca remaining after precipitation. A modification to the model recognises differences in element speciation. The model is consistent with differences between D[Sr], D[Ba], and D[Cd] in benthic but not planktonic foraminifera. Depth variations in D for Sr and Ba are consistent with the model, as are differences in depth variation of D[Cd] in calcitic and aragonitic benthic foraminifera. The shallower depth variations may reflect increasing calcification rates with increasing water depth to an optimum of about 2500 m. Observations of unusually lower DCd for some deep waters, not accompanied by similar [Sr], or D[Ba] may be because of dissolution or a calcification response to a lower carbonate saturation state. Article in Journal/Newspaper Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Kasten corer Box corer Piston corer D184 NEAP V22 V27 Discovery 1962 Charles Darwin Vema Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS |
spellingShingle |
Kasten corer Box corer Piston corer D184 NEAP V22 V27 Discovery 1962 Charles Darwin Vema Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS Elderfield, Henry Bertram, Caroline J Erez, Jonathan Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 |
topic_facet |
Kasten corer Box corer Piston corer D184 NEAP V22 V27 Discovery 1962 Charles Darwin Vema Biogeochemical Ocean Flux Study BOFS Joint Global Ocean Flux Study JGOFS |
description |
Measurements of Sr/Ca of benthic foraminifera show a linear decrease with water depth which is superimposed upon significant variability identified by analyses of individual foraminifera. New data for Cd/Ca support previous work in defining a contrast between waters shallower and deeper than ~2500 m. Measured element partition coefficients in foraminiferal calcium carbonate relative to sea water (D) have been described by means of a one-box model in which elements are extracted by Rayleigh distillation from a biomineralization reservoir that serves for calcification with a constant fractionation factor (alpha), such that D = (1 - f**alpha)/(l - f), where f is the proportion of Ca remaining after precipitation. A modification to the model recognises differences in element speciation. The model is consistent with differences between D[Sr], D[Ba], and D[Cd] in benthic but not planktonic foraminifera. Depth variations in D for Sr and Ba are consistent with the model, as are differences in depth variation of D[Cd] in calcitic and aragonitic benthic foraminifera. The shallower depth variations may reflect increasing calcification rates with increasing water depth to an optimum of about 2500 m. Observations of unusually lower DCd for some deep waters, not accompanied by similar [Sr], or D[Ba] may be because of dissolution or a calcification response to a lower carbonate saturation state. |
format |
Article in Journal/Newspaper |
author |
Elderfield, Henry Bertram, Caroline J Erez, Jonathan |
author_facet |
Elderfield, Henry Bertram, Caroline J Erez, Jonathan |
author_sort |
Elderfield, Henry |
title |
Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 |
title_short |
Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 |
title_full |
Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 |
title_fullStr |
Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 |
title_full_unstemmed |
Sr/Ca and Cd/Ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: Elderfield, Henry; Bertram, Caroline J; Erez, Jonathan (1996): A biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. Earth and Planetary Science Letters, 142(3-4), 409-423 |
title_sort |
sr/ca and cd/ca ratios of benthic foraminifera in surface deep-sea sediments, supplement to: elderfield, henry; bertram, caroline j; erez, jonathan (1996): a biomineralization model for the incorporation of trace elements into foraminiferal calcium carbonate. earth and planetary science letters, 142(3-4), 409-423 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1996 |
url |
https://dx.doi.org/10.1594/pangaea.708384 https://doi.pangaea.de/10.1594/PANGAEA.708384 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.1016/0012-821x(96)00105-7 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.708384 https://doi.org/10.1016/0012-821x(96)00105-7 |
_version_ |
1766170348613533696 |