AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES
ABSTRACT Yedoma sediments with thick syngenetic ice wedges have been studied on the Yamal Peninsula, northwestern Siberia. The accumulation of yedoma strata occurred under alternating subaqueous-subaerial conditions, and three tiers of ice wedge were formed mainly on subaerial stages. The ice wedges...
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Online Access: | http://dx.doi.org/10.1017/rdc.2022.15 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822222000157 |
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crcambridgeupr:10.1017/rdc.2022.15 2024-09-15T18:12:25+00:00 AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES Vasil’chuk, Yurij Vasil’chuk, Alla Budantseva, Nadine 2022 http://dx.doi.org/10.1017/rdc.2022.15 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822222000157 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Radiocarbon volume 64, issue 6, page 1419-1429 ISSN 0033-8222 1945-5755 journal-article 2022 crcambridgeupr https://doi.org/10.1017/rdc.2022.15 2024-08-14T04:03:49Z ABSTRACT Yedoma sediments with thick syngenetic ice wedges have been studied on the Yamal Peninsula, northwestern Siberia. The accumulation of yedoma strata occurred under alternating subaqueous-subaerial conditions, and three tiers of ice wedge were formed mainly on subaerial stages. The ice wedges and enclosing sediments were dated, revealing that the ice wedges were formed between 29 and 18 cal ka BP, while the enclosing sediments are generally older, possibly due to contamination with ancient material (especially in the central part of the yedoma). However, the termination of yedoma complex formation was dated not later than 13.5 cal ka BP. Stable oxygen-isotope data for the ice wedges indicate more severe winter climate conditions during 25–21 cal ka BP, when mean January air temperatures were at least 10°C lower that modern ones, favoring syngenetic ice wedge growth. Yedoma accumulation in the western part of northern Siberia does not support the existence here of an ice sheet during the LGM. Article in Journal/Newspaper Ice Sheet Yamal Peninsula Siberia Cambridge University Press Radiocarbon 1 11 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
ABSTRACT Yedoma sediments with thick syngenetic ice wedges have been studied on the Yamal Peninsula, northwestern Siberia. The accumulation of yedoma strata occurred under alternating subaqueous-subaerial conditions, and three tiers of ice wedge were formed mainly on subaerial stages. The ice wedges and enclosing sediments were dated, revealing that the ice wedges were formed between 29 and 18 cal ka BP, while the enclosing sediments are generally older, possibly due to contamination with ancient material (especially in the central part of the yedoma). However, the termination of yedoma complex formation was dated not later than 13.5 cal ka BP. Stable oxygen-isotope data for the ice wedges indicate more severe winter climate conditions during 25–21 cal ka BP, when mean January air temperatures were at least 10°C lower that modern ones, favoring syngenetic ice wedge growth. Yedoma accumulation in the western part of northern Siberia does not support the existence here of an ice sheet during the LGM. |
format |
Article in Journal/Newspaper |
author |
Vasil’chuk, Yurij Vasil’chuk, Alla Budantseva, Nadine |
spellingShingle |
Vasil’chuk, Yurij Vasil’chuk, Alla Budantseva, Nadine AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES |
author_facet |
Vasil’chuk, Yurij Vasil’chuk, Alla Budantseva, Nadine |
author_sort |
Vasil’chuk, Yurij |
title |
AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES |
title_short |
AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES |
title_full |
AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES |
title_fullStr |
AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES |
title_full_unstemmed |
AMS 14 C DATING OF SEYAKHA YEDOMA AND JANUARY AIR PALAEOTEMPERATURES FOR 25–21 CAL KA BP BASED ON THE STABLE ISOTOPE COMPOSITIONS OF SYNGENETIC ICE WEDGES |
title_sort |
ams 14 c dating of seyakha yedoma and january air palaeotemperatures for 25–21 cal ka bp based on the stable isotope compositions of syngenetic ice wedges |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/rdc.2022.15 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822222000157 |
genre |
Ice Sheet Yamal Peninsula Siberia |
genre_facet |
Ice Sheet Yamal Peninsula Siberia |
op_source |
Radiocarbon volume 64, issue 6, page 1419-1429 ISSN 0033-8222 1945-5755 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/rdc.2022.15 |
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Radiocarbon |
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1 |
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11 |
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1810450009520340992 |