(Table 2) Detrital Sr isotope ratios of sediment core RC11-83
Sr isotope ratios of the terrigenous sediments from the Cape Basin (southeast Atlantic Ocean) exhibit a systematic pattern of climate-related variability from the Holocene through the last glacial period. Values are high during warm climate intervals (marine isotope stages (MISs) 1 and 3) and lower...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.837313 2023-05-15T16:29:54+02:00 (Table 2) Detrital Sr isotope ratios of sediment core RC11-83 Ruthberg, Randye L Goldstein, Steven L Hemming, Sidney R Anderson, Robert F LATITUDE: -41.600000 * LONGITUDE: 9.717000 * DATE/TIME START: 1967-02-24T00:00:00 * DATE/TIME END: 1967-02-24T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.84 m * MAXIMUM DEPTH, sediment/rock: 14.85 m 2005-10-24 text/tab-separated-values, 73 data points https://doi.pangaea.de/10.1594/PANGAEA.837313 https://doi.org/10.1594/PANGAEA.837313 en eng PANGAEA Charles, Christopher D; Lynch-Stieglitz, Jean; Ninnemann, Ulysses S; Fairbanks, Richard G (1996): (Table 1) Age determination of sediment core RC11-83. PANGAEA, https://doi.org/10.1594/PANGAEA.837314 Charles, Christopher D; Lynch-Stieglitz, Jean; Ninnemann, Ulysses S; Fairbanks, Richard G (1996): Climate connections between the hemisphere revealed by deep sea sediment core/ice core correlations. Earth and Planetary Science Letters, 142(1-2), 19-27, https://doi.org/10.1016/0012-821X(96)00083-0 https://doi.pangaea.de/10.1594/PANGAEA.837313 https://doi.org/10.1594/PANGAEA.837313 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Ruthberg, Randye L; Goldstein, Steven L; Hemming, Sidney R; Anderson, Robert F (2005): Sr isotope evidence for sources of terrigenous sediment in the southeast Atlantic Ocean: Is there increased available Fe for enhanced glacial productivity? Paleoceanography, 20(1), PA1018, https://doi.org/10.1029/2003PA000999 AGE DEPTH sediment/rock PC Piston corer RC11 RC1112 RC11-83 Robert Conrad Strontium-87/Strontium-86 ratio Dataset 2005 ftpangaea https://doi.org/10.1594/PANGAEA.837313 https://doi.org/10.1029/2003PA000999 https://doi.org/10.1594/PANGAEA.837314 https://doi.org/10.1016/0012-821X(96)00083-0 2023-01-20T09:04:09Z Sr isotope ratios of the terrigenous sediments from the Cape Basin (southeast Atlantic Ocean) exhibit a systematic pattern of climate-related variability from the Holocene through the last glacial period. Values are high during warm climate intervals (marine isotope stages (MISs) 1 and 3) and lower during full glacial periods (MISs 2 and 4). The variability is large (87Sr/86Sr = 0.717-0.723), and the rapid changes correspond temporally to abrupt climate change during the MIS 5a/4 and 2/1 transitions and through MIS 3. The Sr isotope variability corresponds to changes in d13C of benthic foraminifera at orbital frequencies and within periods of rapid variability. Prior studies have suggested that benthic d13C records from the Cape Basin follow Greenland ice core variability and thus global overturning circulation. Other studies suggest that these benthic d13C records contain a strong overprint from isotopically light carbon, possibly associated with high fluxes of organic matter to the seabed. We explore the scenario that the relationship between lower terrigenous 87Sr/86Sr and lighter benthic d13C may reflect high productivity during cold climatic intervals as a result of iron fertilization of the southern Atlantic Ocean. Increased supply of iron during cold periods may be associated with greater terrigenous sediment fluxes from South America, characterized by a less-radiogenic Sr isotopic signature. Dataset Greenland Greenland ice core ice core PANGAEA - Data Publisher for Earth & Environmental Science Greenland ENVELOPE(9.717000,9.717000,-41.600000,-41.600000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AGE DEPTH sediment/rock PC Piston corer RC11 RC1112 RC11-83 Robert Conrad Strontium-87/Strontium-86 ratio |
spellingShingle |
AGE DEPTH sediment/rock PC Piston corer RC11 RC1112 RC11-83 Robert Conrad Strontium-87/Strontium-86 ratio Ruthberg, Randye L Goldstein, Steven L Hemming, Sidney R Anderson, Robert F (Table 2) Detrital Sr isotope ratios of sediment core RC11-83 |
topic_facet |
AGE DEPTH sediment/rock PC Piston corer RC11 RC1112 RC11-83 Robert Conrad Strontium-87/Strontium-86 ratio |
description |
Sr isotope ratios of the terrigenous sediments from the Cape Basin (southeast Atlantic Ocean) exhibit a systematic pattern of climate-related variability from the Holocene through the last glacial period. Values are high during warm climate intervals (marine isotope stages (MISs) 1 and 3) and lower during full glacial periods (MISs 2 and 4). The variability is large (87Sr/86Sr = 0.717-0.723), and the rapid changes correspond temporally to abrupt climate change during the MIS 5a/4 and 2/1 transitions and through MIS 3. The Sr isotope variability corresponds to changes in d13C of benthic foraminifera at orbital frequencies and within periods of rapid variability. Prior studies have suggested that benthic d13C records from the Cape Basin follow Greenland ice core variability and thus global overturning circulation. Other studies suggest that these benthic d13C records contain a strong overprint from isotopically light carbon, possibly associated with high fluxes of organic matter to the seabed. We explore the scenario that the relationship between lower terrigenous 87Sr/86Sr and lighter benthic d13C may reflect high productivity during cold climatic intervals as a result of iron fertilization of the southern Atlantic Ocean. Increased supply of iron during cold periods may be associated with greater terrigenous sediment fluxes from South America, characterized by a less-radiogenic Sr isotopic signature. |
format |
Dataset |
author |
Ruthberg, Randye L Goldstein, Steven L Hemming, Sidney R Anderson, Robert F |
author_facet |
Ruthberg, Randye L Goldstein, Steven L Hemming, Sidney R Anderson, Robert F |
author_sort |
Ruthberg, Randye L |
title |
(Table 2) Detrital Sr isotope ratios of sediment core RC11-83 |
title_short |
(Table 2) Detrital Sr isotope ratios of sediment core RC11-83 |
title_full |
(Table 2) Detrital Sr isotope ratios of sediment core RC11-83 |
title_fullStr |
(Table 2) Detrital Sr isotope ratios of sediment core RC11-83 |
title_full_unstemmed |
(Table 2) Detrital Sr isotope ratios of sediment core RC11-83 |
title_sort |
(table 2) detrital sr isotope ratios of sediment core rc11-83 |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.837313 https://doi.org/10.1594/PANGAEA.837313 |
op_coverage |
LATITUDE: -41.600000 * LONGITUDE: 9.717000 * DATE/TIME START: 1967-02-24T00:00:00 * DATE/TIME END: 1967-02-24T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.84 m * MAXIMUM DEPTH, sediment/rock: 14.85 m |
long_lat |
ENVELOPE(9.717000,9.717000,-41.600000,-41.600000) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core ice core |
genre_facet |
Greenland Greenland ice core ice core |
op_source |
Supplement to: Ruthberg, Randye L; Goldstein, Steven L; Hemming, Sidney R; Anderson, Robert F (2005): Sr isotope evidence for sources of terrigenous sediment in the southeast Atlantic Ocean: Is there increased available Fe for enhanced glacial productivity? Paleoceanography, 20(1), PA1018, https://doi.org/10.1029/2003PA000999 |
op_relation |
Charles, Christopher D; Lynch-Stieglitz, Jean; Ninnemann, Ulysses S; Fairbanks, Richard G (1996): (Table 1) Age determination of sediment core RC11-83. PANGAEA, https://doi.org/10.1594/PANGAEA.837314 Charles, Christopher D; Lynch-Stieglitz, Jean; Ninnemann, Ulysses S; Fairbanks, Richard G (1996): Climate connections between the hemisphere revealed by deep sea sediment core/ice core correlations. Earth and Planetary Science Letters, 142(1-2), 19-27, https://doi.org/10.1016/0012-821X(96)00083-0 https://doi.pangaea.de/10.1594/PANGAEA.837313 https://doi.org/10.1594/PANGAEA.837313 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.837313 https://doi.org/10.1029/2003PA000999 https://doi.org/10.1594/PANGAEA.837314 https://doi.org/10.1016/0012-821X(96)00083-0 |
_version_ |
1766019612726525952 |