Magnesium/Calcium ratios in benthic foraminifera from surface sediments ...
We used modern epibenthic foraminifer tests of Cibicidoides mundulus and Planulina wuellerstorfi from South Atlantic core top sediments in order to establish Mg/Ca-temperature relationships for the temperature range from 0 to 15°C. We obtained the following calibrations: Mg/Ca (mmol/mol) = 0.830*exp...
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ftdatacite:10.1594/pangaea.759564 2023-10-01T03:51:31+02:00 Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... Raitzsch, Markus Kuhnert, Henning Groeneveld, Jeroen Bickert, Torsten 2008 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.759564 https://doi.pangaea.de/10.1594/PANGAEA.759564 en eng PANGAEA https://dx.doi.org/10.1029/2007gc001788 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 Event label DEPTH, sediment/rock Depth, top/min Depth, bottom/max Planulina wuellerstorfi, Magnesium/Calcium ratio Planulina wuellerstorfi, Magnesium/Calcium ratio, standard deviation Cibicidoides mundulus, Magnesium/Calcium ratio Cibicidoides mundulus, Magnesium/Calcium ratio, standard deviation Giant box corer MultiCorer Bottom lander Gravity corer Kiel type LA-ICP-MS Thermo Finnigan Element 2 M6/6 M9/4 M12/1 M20/2 M23/2 M29/1 M34/1 M34/3 M46/2 M46/3 M57/2 Meteor 1986 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Dataset Supplementary Dataset dataset 2008 ftdatacite https://doi.org/10.1594/pangaea.75956410.1029/2007gc001788 2023-09-04T14:52:34Z We used modern epibenthic foraminifer tests of Cibicidoides mundulus and Planulina wuellerstorfi from South Atlantic core top sediments in order to establish Mg/Ca-temperature relationships for the temperature range from 0 to 15°C. We obtained the following calibrations: Mg/Ca (mmol/mol) = 0.830*exp(0.145*BWT (°C)) for P. wuellerstorfi, and Mg/Ca (mmol/mol) = 0.627*exp(0.143*BWT (°C)) for C. mundulus. However, a number of tests, especially those bathed in North Atlantic Deep Water, revealed higher Mg/Ca ratios than predicted from the calibration. Our data suggest that d[CO3 2-] of bottom water exerts a significant control on dMg/Ca (temperature-corrected) of C. mundulus (dMg/Ca = 0.017*d[CO3 2-] -0.14), while dMg/Ca of P. wuellerstorfi is more likely to be governed by TCO2 (dMg/Ca = -0.007*TCO2 + 15). Since both d[CO3 2-] and TCO2 are closely linked to [CO3 2-], it is inferred that carbonate ion acts as secondary control, after temperature, on benthic shell Mg/Ca below -4°C. A drop in [CO3 2-] by 25 ?mol/kg ... : Supplement to: Raitzsch, Markus; Kuhnert, Henning; Groeneveld, Jeroen; Bickert, Torsten (2008): Benthic foraminifer Mg/Ca anomalies in South Atlantic core top sediments and their implications for paleothermometry. Geochemistry, Geophysics, Geosystems, 9(5), Q05010 ... Dataset Antarc* Antarctic Arctic Foraminifera* North Atlantic Deep Water North Atlantic Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label DEPTH, sediment/rock Depth, top/min Depth, bottom/max Planulina wuellerstorfi, Magnesium/Calcium ratio Planulina wuellerstorfi, Magnesium/Calcium ratio, standard deviation Cibicidoides mundulus, Magnesium/Calcium ratio Cibicidoides mundulus, Magnesium/Calcium ratio, standard deviation Giant box corer MultiCorer Bottom lander Gravity corer Kiel type LA-ICP-MS Thermo Finnigan Element 2 M6/6 M9/4 M12/1 M20/2 M23/2 M29/1 M34/1 M34/3 M46/2 M46/3 M57/2 Meteor 1986 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Event label DEPTH, sediment/rock Depth, top/min Depth, bottom/max Planulina wuellerstorfi, Magnesium/Calcium ratio Planulina wuellerstorfi, Magnesium/Calcium ratio, standard deviation Cibicidoides mundulus, Magnesium/Calcium ratio Cibicidoides mundulus, Magnesium/Calcium ratio, standard deviation Giant box corer MultiCorer Bottom lander Gravity corer Kiel type LA-ICP-MS Thermo Finnigan Element 2 M6/6 M9/4 M12/1 M20/2 M23/2 M29/1 M34/1 M34/3 M46/2 M46/3 M57/2 Meteor 1986 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Raitzsch, Markus Kuhnert, Henning Groeneveld, Jeroen Bickert, Torsten Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... |
topic_facet |
Event label DEPTH, sediment/rock Depth, top/min Depth, bottom/max Planulina wuellerstorfi, Magnesium/Calcium ratio Planulina wuellerstorfi, Magnesium/Calcium ratio, standard deviation Cibicidoides mundulus, Magnesium/Calcium ratio Cibicidoides mundulus, Magnesium/Calcium ratio, standard deviation Giant box corer MultiCorer Bottom lander Gravity corer Kiel type LA-ICP-MS Thermo Finnigan Element 2 M6/6 M9/4 M12/1 M20/2 M23/2 M29/1 M34/1 M34/3 M46/2 M46/3 M57/2 Meteor 1986 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
We used modern epibenthic foraminifer tests of Cibicidoides mundulus and Planulina wuellerstorfi from South Atlantic core top sediments in order to establish Mg/Ca-temperature relationships for the temperature range from 0 to 15°C. We obtained the following calibrations: Mg/Ca (mmol/mol) = 0.830*exp(0.145*BWT (°C)) for P. wuellerstorfi, and Mg/Ca (mmol/mol) = 0.627*exp(0.143*BWT (°C)) for C. mundulus. However, a number of tests, especially those bathed in North Atlantic Deep Water, revealed higher Mg/Ca ratios than predicted from the calibration. Our data suggest that d[CO3 2-] of bottom water exerts a significant control on dMg/Ca (temperature-corrected) of C. mundulus (dMg/Ca = 0.017*d[CO3 2-] -0.14), while dMg/Ca of P. wuellerstorfi is more likely to be governed by TCO2 (dMg/Ca = -0.007*TCO2 + 15). Since both d[CO3 2-] and TCO2 are closely linked to [CO3 2-], it is inferred that carbonate ion acts as secondary control, after temperature, on benthic shell Mg/Ca below -4°C. A drop in [CO3 2-] by 25 ?mol/kg ... : Supplement to: Raitzsch, Markus; Kuhnert, Henning; Groeneveld, Jeroen; Bickert, Torsten (2008): Benthic foraminifer Mg/Ca anomalies in South Atlantic core top sediments and their implications for paleothermometry. Geochemistry, Geophysics, Geosystems, 9(5), Q05010 ... |
format |
Dataset |
author |
Raitzsch, Markus Kuhnert, Henning Groeneveld, Jeroen Bickert, Torsten |
author_facet |
Raitzsch, Markus Kuhnert, Henning Groeneveld, Jeroen Bickert, Torsten |
author_sort |
Raitzsch, Markus |
title |
Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... |
title_short |
Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... |
title_full |
Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... |
title_fullStr |
Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... |
title_full_unstemmed |
Magnesium/Calcium ratios in benthic foraminifera from surface sediments ... |
title_sort |
magnesium/calcium ratios in benthic foraminifera from surface sediments ... |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://dx.doi.org/10.1594/pangaea.759564 https://doi.pangaea.de/10.1594/PANGAEA.759564 |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Foraminifera* North Atlantic Deep Water North Atlantic Sea ice |
genre_facet |
Antarc* Antarctic Arctic Foraminifera* North Atlantic Deep Water North Atlantic Sea ice |
op_relation |
https://dx.doi.org/10.1029/2007gc001788 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.75956410.1029/2007gc001788 |
_version_ |
1778516627026870272 |