Cadmium analytical results from sediment and foraminifera shells ...
There has been a major contradiction between benthic foraminiferal Cd/Ca and d13C data concerning the labile nutrient chemistry of the Southern Ocean during the Last Glacial Maximum (LGM). Cd data indicates that LGM South Atlantic nutrient concentrations were as low as they are today, indicative of...
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ftdatacite:10.1594/pangaea.807594 2024-09-15T18:19:01+00:00 Cadmium analytical results from sediment and foraminifera shells ... Boyle, Edward A Rosenthal, Yair 1996 application/zip https://dx.doi.org/10.1594/pangaea.807594 https://doi.pangaea.de/10.1594/PANGAEA.807594 en eng PANGAEA Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 article Collection Supplementary Publication Series of Datasets 1996 ftdatacite https://doi.org/10.1594/pangaea.807594 2024-08-01T10:53:32Z There has been a major contradiction between benthic foraminiferal Cd/Ca and d13C data concerning the labile nutrient chemistry of the Southern Ocean during the Last Glacial Maximum (LGM). Cd data indicates that LGM South Atlantic nutrient concentrations were as low as they are today, indicative of a persistent influx of nutrient-depleted North Atlantic Deep Water (NADW). d13C data indicates that LGM South Atlantic nutrient concentrations were much higher than at present (even higher than anywhere else in the ocean at that time), and these data have been interpreted as signifying the complete shutdown ofthe export of NADW into the global ocean. This paper examines both true geochemical differences and various confounding foraminiferal artifacts for both tracers. While many different processes and artifacts affect both tracers in the margin, we conclude the discrepancy is mainly due to the "Mackensen Effect" of low foraminiferal d13C as a result of high carbon flux to the sediments, and that LGM Atlantic ... : Supplement to: Boyle, Edward A; Rosenthal, Yair (1996): Chemical hydrography of the South Atlantic during the Last Glacial Maximum: Cd vs. d13C. In: Wefer, G; Berger, W H; Siedler, G & Webb, D (eds.), The South Atlantic: Present and Past Circulation, Springer, Berlin, Heidelberg, 423-443 ... Article in Journal/Newspaper NADW North Atlantic Deep Water North Atlantic Southern Ocean DataCite |
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ftdatacite |
language |
English |
topic |
South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 |
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South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 Boyle, Edward A Rosenthal, Yair Cadmium analytical results from sediment and foraminifera shells ... |
topic_facet |
South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261 |
description |
There has been a major contradiction between benthic foraminiferal Cd/Ca and d13C data concerning the labile nutrient chemistry of the Southern Ocean during the Last Glacial Maximum (LGM). Cd data indicates that LGM South Atlantic nutrient concentrations were as low as they are today, indicative of a persistent influx of nutrient-depleted North Atlantic Deep Water (NADW). d13C data indicates that LGM South Atlantic nutrient concentrations were much higher than at present (even higher than anywhere else in the ocean at that time), and these data have been interpreted as signifying the complete shutdown ofthe export of NADW into the global ocean. This paper examines both true geochemical differences and various confounding foraminiferal artifacts for both tracers. While many different processes and artifacts affect both tracers in the margin, we conclude the discrepancy is mainly due to the "Mackensen Effect" of low foraminiferal d13C as a result of high carbon flux to the sediments, and that LGM Atlantic ... : Supplement to: Boyle, Edward A; Rosenthal, Yair (1996): Chemical hydrography of the South Atlantic during the Last Glacial Maximum: Cd vs. d13C. In: Wefer, G; Berger, W H; Siedler, G & Webb, D (eds.), The South Atlantic: Present and Past Circulation, Springer, Berlin, Heidelberg, 423-443 ... |
format |
Article in Journal/Newspaper |
author |
Boyle, Edward A Rosenthal, Yair |
author_facet |
Boyle, Edward A Rosenthal, Yair |
author_sort |
Boyle, Edward A |
title |
Cadmium analytical results from sediment and foraminifera shells ... |
title_short |
Cadmium analytical results from sediment and foraminifera shells ... |
title_full |
Cadmium analytical results from sediment and foraminifera shells ... |
title_fullStr |
Cadmium analytical results from sediment and foraminifera shells ... |
title_full_unstemmed |
Cadmium analytical results from sediment and foraminifera shells ... |
title_sort |
cadmium analytical results from sediment and foraminifera shells ... |
publisher |
PANGAEA |
publishDate |
1996 |
url |
https://dx.doi.org/10.1594/pangaea.807594 https://doi.pangaea.de/10.1594/PANGAEA.807594 |
genre |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
genre_facet |
NADW North Atlantic Deep Water North Atlantic Southern Ocean |
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.807594 |
_version_ |
1810457110100574208 |