Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies
We have measured the radiocarbon contents of individual, solvent-extractable, short-chain (C 14 , C 16 , and C 18 ) fatty acids isolated from Ross Sea surface sediments. The corresponding 14 C ages are equivalent to that of the post-bomb dissolved inorganic carbon (DIC) reservoir. Moreover, molecula...
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Online Access: | http://dx.doi.org/10.1017/s0033822200032355 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200032355 |
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crcambridgeupr:10.1017/s0033822200032355 2024-06-23T07:45:59+00:00 Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies Ohkouchi, Naohiko Eglinton, Timothy I Hayes, John M 2003 http://dx.doi.org/10.1017/s0033822200032355 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200032355 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Radiocarbon volume 45, issue 1, page 17-24 ISSN 0033-8222 1945-5755 journal-article 2003 crcambridgeupr https://doi.org/10.1017/s0033822200032355 2024-05-29T08:09:18Z We have measured the radiocarbon contents of individual, solvent-extractable, short-chain (C 14 , C 16 , and C 18 ) fatty acids isolated from Ross Sea surface sediments. The corresponding 14 C ages are equivalent to that of the post-bomb dissolved inorganic carbon (DIC) reservoir. Moreover, molecular 14 C variations in surficial (upper 15 cm) sediments indicate that these compounds may prove useful for reconstructing chronologies of Antarctic margin sediments containing uncertain (and potentially variable) quantities of relict organic carbon. A preliminary molecular 14 C chronology suggests that the accumulation rate of relict organic matter has not changed during the last 500 14 C yr. The focus of this study is to determine the validity of compound-specific 14 C analysis as a technique for reconstructing chronologies of Antarctic margin sediments. Article in Journal/Newspaper Antarc* Antarctic Ross Sea Cambridge University Press Antarctic Ross Sea Radiocarbon 45 1 17 24 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
We have measured the radiocarbon contents of individual, solvent-extractable, short-chain (C 14 , C 16 , and C 18 ) fatty acids isolated from Ross Sea surface sediments. The corresponding 14 C ages are equivalent to that of the post-bomb dissolved inorganic carbon (DIC) reservoir. Moreover, molecular 14 C variations in surficial (upper 15 cm) sediments indicate that these compounds may prove useful for reconstructing chronologies of Antarctic margin sediments containing uncertain (and potentially variable) quantities of relict organic carbon. A preliminary molecular 14 C chronology suggests that the accumulation rate of relict organic matter has not changed during the last 500 14 C yr. The focus of this study is to determine the validity of compound-specific 14 C analysis as a technique for reconstructing chronologies of Antarctic margin sediments. |
format |
Article in Journal/Newspaper |
author |
Ohkouchi, Naohiko Eglinton, Timothy I Hayes, John M |
spellingShingle |
Ohkouchi, Naohiko Eglinton, Timothy I Hayes, John M Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies |
author_facet |
Ohkouchi, Naohiko Eglinton, Timothy I Hayes, John M |
author_sort |
Ohkouchi, Naohiko |
title |
Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies |
title_short |
Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies |
title_full |
Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies |
title_fullStr |
Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies |
title_full_unstemmed |
Radiocarbon Dating of Individual Fatty Acids as a Tool for Refining Antarctic Margin Sediment Chronologies |
title_sort |
radiocarbon dating of individual fatty acids as a tool for refining antarctic margin sediment chronologies |
publisher |
Cambridge University Press (CUP) |
publishDate |
2003 |
url |
http://dx.doi.org/10.1017/s0033822200032355 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200032355 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Ross Sea |
genre_facet |
Antarc* Antarctic Ross Sea |
op_source |
Radiocarbon volume 45, issue 1, page 17-24 ISSN 0033-8222 1945-5755 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0033822200032355 |
container_title |
Radiocarbon |
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45 |
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1 |
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17 |
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24 |
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1802643390693638144 |