Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92
Carbonates are invaluable archives of the past, and have been used extensively to reconstruct paleoclimate and paleoceanographic conditions over geologic time scales. Such archives are susceptible to diagenetic alteration via dissolution, recrystallization and secondary precipitation, particularly d...
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ftdatacite:10.1594/pangaea.854737 2023-05-15T17:50:12+02:00 Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 Griffith, Elizabeth M Fantle, Matthew S Eisenhauer, Anton Paytan, Adina Bullen, Thomas D 2015 application/zip https://dx.doi.org/10.1594/pangaea.854737 https://doi.pangaea.de/10.1594/PANGAEA.854737 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.epsl.2015.03.010 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 2015 ftdatacite https://doi.org/10.1594/pangaea.854737 https://doi.org/10.1016/j.epsl.2015.03.010 2022-02-08T16:24:46Z Carbonates are invaluable archives of the past, and have been used extensively to reconstruct paleoclimate and paleoceanographic conditions over geologic time scales. Such archives are susceptible to diagenetic alteration via dissolution, recrystallization and secondary precipitation, particularly during ocean acidification events when intense dissolution can occur. Despite the importance of diagenesis on proxy fidelity, the effects of diagenesis on the calcium isotopic composition (d44Ca) of carbonates are unclear. Accordingly, bulk carbonate d44Ca was measured at high resolution in two Pacific deep sea sediment cores (ODP Sites 1212 and 1221) with considerably different dissolution histories over the Paleocene-Eocene Thermal Maximum (PETM, ~55 Ma). The d44Ca of marine barite was also measured at the deeper Site 1221, which experienced severe carbonate dissolution during the PETM. Large (~0.8 per mil) variations in bulk carbonate d44Ca occur in the deeper site near the peak carbon isotope excursion, and are correlated with a large drop in carbonate weight percent. Such an effect is seen in neither the 1221 barite record nor the bulk carbonate record at the shallower, less dissolved Site 1212. We contend that ocean chemical changes associated with the abrupt and massive carbon release into the ocean-atmosphere system and subsequent ocean acidification at the PETM affected the bulk carbonate d44Ca record via diagenesis in the sedimentary column. Such changes are considerable, and need to be taken into account when interpreting and modeling Ca isotope data over extreme climatic events associated with ocean chemical evolution. Article in Journal/Newspaper Ocean acidification DataCite Metadata Store (German National Library of Science and Technology) Griffith ENVELOPE(-155.500,-155.500,-85.883,-85.883) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Ocean Drilling Program ODP |
spellingShingle |
Ocean Drilling Program ODP Griffith, Elizabeth M Fantle, Matthew S Eisenhauer, Anton Paytan, Adina Bullen, Thomas D Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 |
topic_facet |
Ocean Drilling Program ODP |
description |
Carbonates are invaluable archives of the past, and have been used extensively to reconstruct paleoclimate and paleoceanographic conditions over geologic time scales. Such archives are susceptible to diagenetic alteration via dissolution, recrystallization and secondary precipitation, particularly during ocean acidification events when intense dissolution can occur. Despite the importance of diagenesis on proxy fidelity, the effects of diagenesis on the calcium isotopic composition (d44Ca) of carbonates are unclear. Accordingly, bulk carbonate d44Ca was measured at high resolution in two Pacific deep sea sediment cores (ODP Sites 1212 and 1221) with considerably different dissolution histories over the Paleocene-Eocene Thermal Maximum (PETM, ~55 Ma). The d44Ca of marine barite was also measured at the deeper Site 1221, which experienced severe carbonate dissolution during the PETM. Large (~0.8 per mil) variations in bulk carbonate d44Ca occur in the deeper site near the peak carbon isotope excursion, and are correlated with a large drop in carbonate weight percent. Such an effect is seen in neither the 1221 barite record nor the bulk carbonate record at the shallower, less dissolved Site 1212. We contend that ocean chemical changes associated with the abrupt and massive carbon release into the ocean-atmosphere system and subsequent ocean acidification at the PETM affected the bulk carbonate d44Ca record via diagenesis in the sedimentary column. Such changes are considerable, and need to be taken into account when interpreting and modeling Ca isotope data over extreme climatic events associated with ocean chemical evolution. |
format |
Article in Journal/Newspaper |
author |
Griffith, Elizabeth M Fantle, Matthew S Eisenhauer, Anton Paytan, Adina Bullen, Thomas D |
author_facet |
Griffith, Elizabeth M Fantle, Matthew S Eisenhauer, Anton Paytan, Adina Bullen, Thomas D |
author_sort |
Griffith, Elizabeth M |
title |
Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 |
title_short |
Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 |
title_full |
Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 |
title_fullStr |
Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 |
title_full_unstemmed |
Calcium isotope ratios from marine barite and carbonate over Paleocene-Eocene Boundary (ODP Sites 1212 and 1221), supplement to: Griffith, Elizabeth M; Fantle, Matthew S; Eisenhauer, Anton; Paytan, Adina; Bullen, Thomas D (2015): Effects of ocean acidification on the marine calcium isotope record at the Paleocene–Eocene Thermal Maximum. Earth and Planetary Science Letters, 419, 81-92 |
title_sort |
calcium isotope ratios from marine barite and carbonate over paleocene-eocene boundary (odp sites 1212 and 1221), supplement to: griffith, elizabeth m; fantle, matthew s; eisenhauer, anton; paytan, adina; bullen, thomas d (2015): effects of ocean acidification on the marine calcium isotope record at the paleocene–eocene thermal maximum. earth and planetary science letters, 419, 81-92 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2015 |
url |
https://dx.doi.org/10.1594/pangaea.854737 https://doi.pangaea.de/10.1594/PANGAEA.854737 |
long_lat |
ENVELOPE(-155.500,-155.500,-85.883,-85.883) |
geographic |
Griffith Pacific |
geographic_facet |
Griffith Pacific |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://dx.doi.org/10.1016/j.epsl.2015.03.010 |
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.854737 https://doi.org/10.1016/j.epsl.2015.03.010 |
_version_ |
1766156850084970496 |