Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336
Benthic foraminiferal delta13C suggests that there was a net shift of isotopically light metabolic CO2 from the upper ocean into the deep ocean during the last glacial period. According to the 'CaCO3 compensation' hypothesis, this should have caused a transient drop in deep ocean CO3[2-] t...
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Online Access: | https://dx.doi.org/10.1594/pangaea.712938 https://doi.pangaea.de/10.1594/PANGAEA.712938 |
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ftdatacite:10.1594/pangaea.712938 2023-05-15T16:41:36+02:00 Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 Marchitto, Thomas M Lynch-Stieglitz, Jean Hemming, Sidney R 2005 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.712938 https://doi.pangaea.de/10.1594/PANGAEA.712938 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2004.12.024 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, sediment/rock Zinc/Calcium ratio Cadmium/Calcium ratio Manganese/Calcium ratio Piston corer RC13 Robert Conrad Dataset dataset Supplementary Dataset 2005 ftdatacite https://doi.org/10.1594/pangaea.712938 https://doi.org/10.1016/j.epsl.2004.12.024 2022-02-09T13:23:14Z Benthic foraminiferal delta13C suggests that there was a net shift of isotopically light metabolic CO2 from the upper ocean into the deep ocean during the last glacial period. According to the 'CaCO3 compensation' hypothesis, this should have caused a transient drop in deep ocean CO3[2-] that was eventually reversed by seafloor dissolution of CaCO3. The resulting increase in whole-ocean pH may have had a significant impact on atmospheric CO2, compounding any decrease that was due to the initial vertical CO2 shift. The opposite hypothetically occurred during deglaciation, when CO2 was returned to the upper ocean (and atmosphere) and deep ocean CO3[2-] temporarily increased, followed by excess burial of CaCO3 and a drop in whole-ocean pH. The deep sea record of CaCO3 preservation appears to reflect these processes, with the largest excursion during deglaciation (as expected), but various factors make quantification of deep sea paleo-CO3[2-] difficult. Here we reconstruct deep equatorial Pacific CO3[2-] over the last glacial-interglacial cycle using benthic foraminiferal Zn/Ca, which is strongly affected by saturation state during calcite precipitation. Our data are in agreement with the CaCO3 compensation theory, including glacial CO3[2-] concentrations similar to (or slightly lower than) today, and a Termination I CO3[2-] peak of ~25-30 µmol kg**-1. The deglacial CO3[2-] rise precedes ice sheet melting, consistent with the timing of the atmospheric CO2 rise. A later portion of the peak could reflect removal of CO2 from the atmosphere-ocean system due to boreal forest regrowth. CaCO3 compensation alone may explain more than one third of the atmospheric CO2 lowering during glacial times. : / = measurements are believed to be contaminated. Laboratory contamination was a persistent problem for Zn. Some Mn/Cameasurements were skipped due to insufficient sample volume Dataset Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Lynch ENVELOPE(-57.683,-57.683,-63.783,-63.783) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, sediment/rock Zinc/Calcium ratio Cadmium/Calcium ratio Manganese/Calcium ratio Piston corer RC13 Robert Conrad |
spellingShingle |
DEPTH, sediment/rock Zinc/Calcium ratio Cadmium/Calcium ratio Manganese/Calcium ratio Piston corer RC13 Robert Conrad Marchitto, Thomas M Lynch-Stieglitz, Jean Hemming, Sidney R Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 |
topic_facet |
DEPTH, sediment/rock Zinc/Calcium ratio Cadmium/Calcium ratio Manganese/Calcium ratio Piston corer RC13 Robert Conrad |
description |
Benthic foraminiferal delta13C suggests that there was a net shift of isotopically light metabolic CO2 from the upper ocean into the deep ocean during the last glacial period. According to the 'CaCO3 compensation' hypothesis, this should have caused a transient drop in deep ocean CO3[2-] that was eventually reversed by seafloor dissolution of CaCO3. The resulting increase in whole-ocean pH may have had a significant impact on atmospheric CO2, compounding any decrease that was due to the initial vertical CO2 shift. The opposite hypothetically occurred during deglaciation, when CO2 was returned to the upper ocean (and atmosphere) and deep ocean CO3[2-] temporarily increased, followed by excess burial of CaCO3 and a drop in whole-ocean pH. The deep sea record of CaCO3 preservation appears to reflect these processes, with the largest excursion during deglaciation (as expected), but various factors make quantification of deep sea paleo-CO3[2-] difficult. Here we reconstruct deep equatorial Pacific CO3[2-] over the last glacial-interglacial cycle using benthic foraminiferal Zn/Ca, which is strongly affected by saturation state during calcite precipitation. Our data are in agreement with the CaCO3 compensation theory, including glacial CO3[2-] concentrations similar to (or slightly lower than) today, and a Termination I CO3[2-] peak of ~25-30 µmol kg**-1. The deglacial CO3[2-] rise precedes ice sheet melting, consistent with the timing of the atmospheric CO2 rise. A later portion of the peak could reflect removal of CO2 from the atmosphere-ocean system due to boreal forest regrowth. CaCO3 compensation alone may explain more than one third of the atmospheric CO2 lowering during glacial times. : / = measurements are believed to be contaminated. Laboratory contamination was a persistent problem for Zn. Some Mn/Cameasurements were skipped due to insufficient sample volume |
format |
Dataset |
author |
Marchitto, Thomas M Lynch-Stieglitz, Jean Hemming, Sidney R |
author_facet |
Marchitto, Thomas M Lynch-Stieglitz, Jean Hemming, Sidney R |
author_sort |
Marchitto, Thomas M |
title |
Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 |
title_short |
Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 |
title_full |
Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 |
title_fullStr |
Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 |
title_full_unstemmed |
Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336 |
title_sort |
trace element ratios of cibicidoides wuellerstorfi from sediment core rc13-114 (appendix a), supplement to: marchitto, thomas m; lynch-stieglitz, jean; hemming, sidney r (2005): deep pacific caco3 compensation and glacial-interglacial atmospheric co2. earth and planetary science letters, 231(3-4), 317-336 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2005 |
url |
https://dx.doi.org/10.1594/pangaea.712938 https://doi.pangaea.de/10.1594/PANGAEA.712938 |
long_lat |
ENVELOPE(-57.683,-57.683,-63.783,-63.783) |
geographic |
Lynch Pacific |
geographic_facet |
Lynch Pacific |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2004.12.024 |
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.712938 https://doi.org/10.1016/j.epsl.2004.12.024 |
_version_ |
1766032049017192448 |