A decade of in situ cosmogenic 14C in Antarctica
Cosmogenic nuclide measurements in glacial deposits extend our knowledge of glacier chronologies beyond the observational record. The short half-life of in situ cosmogenic 14C makes it particularly useful for studying glacier chronologies, as resulting exposure ages are less sensitive to nuclide inh...
Published in: | Annals of Glaciology |
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Cambridge University Press
2022
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Online Access: | https://doi.org/10.1017/aog.2023.13 https://doaj.org/article/7e7c84e6311b474b99b10b2a0e14e125 |
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ftdoajarticles:oai:doaj.org/article:7e7c84e6311b474b99b10b2a0e14e125 2023-11-12T04:01:24+01:00 A decade of in situ cosmogenic 14C in Antarctica Keir Alexander Nichols 2022-09-01T00:00:00Z https://doi.org/10.1017/aog.2023.13 https://doaj.org/article/7e7c84e6311b474b99b10b2a0e14e125 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0260305523000137/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2023.13 0260-3055 1727-5644 https://doaj.org/article/7e7c84e6311b474b99b10b2a0e14e125 Annals of Glaciology, Vol 63, Pp 67-72 (2022) Glacial geology ice chronology/dating paleoclimate Meteorology. Climatology QC851-999 article 2022 ftdoajarticles https://doi.org/10.1017/aog.2023.13 2023-10-15T00:35:59Z Cosmogenic nuclide measurements in glacial deposits extend our knowledge of glacier chronologies beyond the observational record. The short half-life of in situ cosmogenic 14C makes it particularly useful for studying glacier chronologies, as resulting exposure ages are less sensitive to nuclide inheritance when compared with more commonly measured, long-lived nuclides. An increasing number of laboratories using an automated process to extract carbon from quartz has led to in situ 14C measurements in Antarctic samples at an accelerating rate over the past decade, shedding light on deglaciation in Antarctica. In situ 14C has had the greatest impact in the Weddell Sea Embayment, where inferences on the thickness of ice and timing of deglaciation were limited by inheritance in other cosmogenic nuclide systems. Future subglacial measurements of the nuclide hold much potential as they can provide direct evidence of proposed Holocene thinning and subsequent re-thickening of parts of the Antarctic ice sheets. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Weddell Sea Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Weddell Weddell Sea Annals of Glaciology 63 87-89 67 72 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacial geology ice chronology/dating paleoclimate Meteorology. Climatology QC851-999 |
spellingShingle |
Glacial geology ice chronology/dating paleoclimate Meteorology. Climatology QC851-999 Keir Alexander Nichols A decade of in situ cosmogenic 14C in Antarctica |
topic_facet |
Glacial geology ice chronology/dating paleoclimate Meteorology. Climatology QC851-999 |
description |
Cosmogenic nuclide measurements in glacial deposits extend our knowledge of glacier chronologies beyond the observational record. The short half-life of in situ cosmogenic 14C makes it particularly useful for studying glacier chronologies, as resulting exposure ages are less sensitive to nuclide inheritance when compared with more commonly measured, long-lived nuclides. An increasing number of laboratories using an automated process to extract carbon from quartz has led to in situ 14C measurements in Antarctic samples at an accelerating rate over the past decade, shedding light on deglaciation in Antarctica. In situ 14C has had the greatest impact in the Weddell Sea Embayment, where inferences on the thickness of ice and timing of deglaciation were limited by inheritance in other cosmogenic nuclide systems. Future subglacial measurements of the nuclide hold much potential as they can provide direct evidence of proposed Holocene thinning and subsequent re-thickening of parts of the Antarctic ice sheets. |
format |
Article in Journal/Newspaper |
author |
Keir Alexander Nichols |
author_facet |
Keir Alexander Nichols |
author_sort |
Keir Alexander Nichols |
title |
A decade of in situ cosmogenic 14C in Antarctica |
title_short |
A decade of in situ cosmogenic 14C in Antarctica |
title_full |
A decade of in situ cosmogenic 14C in Antarctica |
title_fullStr |
A decade of in situ cosmogenic 14C in Antarctica |
title_full_unstemmed |
A decade of in situ cosmogenic 14C in Antarctica |
title_sort |
decade of in situ cosmogenic 14c in antarctica |
publisher |
Cambridge University Press |
publishDate |
2022 |
url |
https://doi.org/10.1017/aog.2023.13 https://doaj.org/article/7e7c84e6311b474b99b10b2a0e14e125 |
geographic |
Antarctic The Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic The Antarctic Weddell Weddell Sea |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Weddell Sea |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Weddell Sea |
op_source |
Annals of Glaciology, Vol 63, Pp 67-72 (2022) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0260305523000137/type/journal_article https://doaj.org/toc/0260-3055 https://doaj.org/toc/1727-5644 doi:10.1017/aog.2023.13 0260-3055 1727-5644 https://doaj.org/article/7e7c84e6311b474b99b10b2a0e14e125 |
op_doi |
https://doi.org/10.1017/aog.2023.13 |
container_title |
Annals of Glaciology |
container_volume |
63 |
container_issue |
87-89 |
container_start_page |
67 |
op_container_end_page |
72 |
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1782332490032087040 |