Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ...
In Antarctic and Subantarctic environments, 14C‐based age determination is often challenging due to unknown reservoir effects, low organic carbon contents of sediments, and high contributions of petrogenic (14C‐free) carbon in ice marginal settings. In this study, we evaluate possible benefits and c...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
ETH Zurich
2020
|
Subjects: | |
Online Access: | https://dx.doi.org/10.3929/ethz-b-000448962 http://hdl.handle.net/20.500.11850/448962 |
id |
ftdatacite:10.3929/ethz-b-000448962 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.3929/ethz-b-000448962 2024-04-28T07:59:15+00:00 Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... Berg, Sonja Jivcov, Sandra Kusch, Stephanie Kuhn, Gerhard Wacker, Lukas Rethemeyer, Janet 2020 application/pdf https://dx.doi.org/10.3929/ethz-b-000448962 http://hdl.handle.net/20.500.11850/448962 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 article-journal Text ScholarlyArticle Journal Article 2020 ftdatacite https://doi.org/10.3929/ethz-b-000448962 2024-04-02T12:34:54Z In Antarctic and Subantarctic environments, 14C‐based age determination is often challenging due to unknown reservoir effects, low organic carbon contents of sediments, and high contributions of petrogenic (14C‐free) carbon in ice marginal settings. In this study, we evaluate possible benefits and challenges of compound‐specific radiocarbon analysis (CSRA) as a tool for age determination of marine Antarctic and Subantarctic sediment sequences. We present a comprehensive data set of 14C ages obtained on bulk organic carbon, carbonates, and on fatty acids (FA) from three coastal marine sediment cores from Subantarctic South Georgia and East Antarctica. Low molecular weight (LMW) FA represent the least 14C‐depleted fraction, indicating that the phytoplankton‐derived compounds can be a means of dating sediments. In contrast, vascular plant‐derived high molecular weight FA are systematically depleted in 14C relative to the low molecular weight homologues, reflecting processes such as soil formation/erosion in the ... : Paleoceanography and Paleoclimatology, 35 (10) ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
In Antarctic and Subantarctic environments, 14C‐based age determination is often challenging due to unknown reservoir effects, low organic carbon contents of sediments, and high contributions of petrogenic (14C‐free) carbon in ice marginal settings. In this study, we evaluate possible benefits and challenges of compound‐specific radiocarbon analysis (CSRA) as a tool for age determination of marine Antarctic and Subantarctic sediment sequences. We present a comprehensive data set of 14C ages obtained on bulk organic carbon, carbonates, and on fatty acids (FA) from three coastal marine sediment cores from Subantarctic South Georgia and East Antarctica. Low molecular weight (LMW) FA represent the least 14C‐depleted fraction, indicating that the phytoplankton‐derived compounds can be a means of dating sediments. In contrast, vascular plant‐derived high molecular weight FA are systematically depleted in 14C relative to the low molecular weight homologues, reflecting processes such as soil formation/erosion in the ... : Paleoceanography and Paleoclimatology, 35 (10) ... |
format |
Article in Journal/Newspaper |
author |
Berg, Sonja Jivcov, Sandra Kusch, Stephanie Kuhn, Gerhard Wacker, Lukas Rethemeyer, Janet |
spellingShingle |
Berg, Sonja Jivcov, Sandra Kusch, Stephanie Kuhn, Gerhard Wacker, Lukas Rethemeyer, Janet Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... |
author_facet |
Berg, Sonja Jivcov, Sandra Kusch, Stephanie Kuhn, Gerhard Wacker, Lukas Rethemeyer, Janet |
author_sort |
Berg, Sonja |
title |
Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... |
title_short |
Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... |
title_full |
Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... |
title_fullStr |
Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... |
title_full_unstemmed |
Compound‐Specific Radiocarbon Analysis of (Sub‐)Antarctic Coastal Marine Sediments—Potential and Challenges for Chronologies ... |
title_sort |
compound‐specific radiocarbon analysis of (sub‐)antarctic coastal marine sediments—potential and challenges for chronologies ... |
publisher |
ETH Zurich |
publishDate |
2020 |
url |
https://dx.doi.org/10.3929/ethz-b-000448962 http://hdl.handle.net/20.500.11850/448962 |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution Non Commercial No Derivatives 4.0 International https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode cc-by-nc-nd-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000448962 |
_version_ |
1797572091218755584 |