¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia
We present new radiocarbon dates from a number of Holocene peat deposits along a north-south transect across the Yamal Peninsula. The samples were collected from frozen peat deposits with large ice wedges in: the northern tundra near Seyaha Settlement, in the Central Yamal Peninsula, the southern tu...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.919177 2023-05-15T17:58:34+02:00 ¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia Vasil'chuk, Yurij K Jungner, Höegne Vasil'chuk, Alla Constantinovna MEDIAN LATITUDE: 68.401544 * MEDIAN LONGITUDE: 69.215420 * SOUTH-BOUND LATITUDE: 66.658056 * WEST-BOUND LONGITUDE: 66.300556 * NORTH-BOUND LATITUDE: 70.369725 * EAST-BOUND LONGITUDE: 72.508333 * DATE/TIME START: 1996-08-01T00:00:00 * DATE/TIME END: 1997-07-31T00:00:00 2020-06-18 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.919177 https://doi.org/10.1594/PANGAEA.919177 en eng PANGAEA Vasil'chuk, Yurij K; Jungner, Höegne; Vasil'chuk, Alla Constantinovna (2001): ¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia. Radiocarbon, 43(2B), 527-540, https://doi.org/10.1017/S0033822200041187 Hantemirov, Rashit; Shiyatov, S G (1999): Radiocarbon and dendrochronological dates of subfossil wood from Yamal Peninsula and usage of those in studies of forest-tundra ecosystems dynamics. In Biota of Pre-Urals Subarctic in Late Pleistocene and Holocene. Ekaterinburg. P.3-22. [In Russian] Vasil'chuk, Yurij K (1992): Oxygen Isotope Composition of Ground Ice (Application to Paleogeocryological Reconstructions) [in Russian]. Theor. Probl. Dept., RAS, Moscow University, Research Institute of Engineering for Construction (PNIIIS), Moscow (Volume 1, 420 pp., Volume 2, 264 pp.) Vasil'chuk, Yurij K; Vasil'chuk, Alla Constantinovna (1995): Ice-wedge formation in northern Asia during the Holocene. Permafrost and Periglacial Processes, 6(3), 273-279, https://doi.org/10.1002/ppp.3430060309 https://doi.pangaea.de/10.1594/PANGAEA.919177 https://doi.org/10.1594/PANGAEA.919177 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY ground ice Holocene Northwest Siberia peat deposits radiocarbon age Stable isotopes Dataset 2020 ftpangaea https://doi.org/10.1594/PANGAEA.919177 https://doi.org/10.1017/S0033822200041187 https://doi.org/10.1002/ppp.3430060309 2023-01-20T07:34:35Z We present new radiocarbon dates from a number of Holocene peat deposits along a north-south transect across the Yamal Peninsula. The samples were collected from frozen peat deposits with large ice wedges in: the northern tundra near Seyaha Settlement, in the Central Yamal Peninsula, the southern tundra in Shchuch'ya River valley at the Edem'yaha mouth, the southern part of the Yamal Peninsula, and the southern forest tundra near Labytnangi Town. ¹⁴C dates of wood remains from the tundra in the Yamal Peninsula could be used to reconstruct a northern limit of forest during the Holocene Optimum. The wood layers at the bottom of the peat give evidence for immigration of trees further north beyond the present boundary. The first forest appearance in the Seyaha River valley area is dated about 9 ka BP according to the oldest peat date in the Seyaha cross section. This suggests that summer temperatures were higher than at present. Very fast accumulation of peat (around 5 m/ka: about 9-8 ka BP at Seyaha and about 7-6 ka BP at Shchuch'ya) also supports this observation. In contrast, oxygen isotope composition of Holocene syngenetic ice wedges from the area (δ¹⁸O= −19.1 to −20.3‰ in the Seyaha cross-section and −17.3 to −20.3‰ in the Shchuch'ya River) show that winter temperatures were significantly lower than presently, i.e. the climate during the Holocene Optimum was slightly more continental. The frozen peat near Labytnangi has thawed during the last 20 years, indicating global warming. Dataset Permafrost and Periglacial Processes Tundra Yamal Peninsula Siberia PANGAEA - Data Publisher for Earth & Environmental Science Yamal Peninsula ENVELOPE(69.873,69.873,70.816,70.816) Labytnangi ENVELOPE(66.418,66.418,66.657,66.657) ENVELOPE(66.300556,72.508333,70.369725,66.658056) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ground ice Holocene Northwest Siberia peat deposits radiocarbon age Stable isotopes |
spellingShingle |
ground ice Holocene Northwest Siberia peat deposits radiocarbon age Stable isotopes Vasil'chuk, Yurij K Jungner, Höegne Vasil'chuk, Alla Constantinovna ¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia |
topic_facet |
ground ice Holocene Northwest Siberia peat deposits radiocarbon age Stable isotopes |
description |
We present new radiocarbon dates from a number of Holocene peat deposits along a north-south transect across the Yamal Peninsula. The samples were collected from frozen peat deposits with large ice wedges in: the northern tundra near Seyaha Settlement, in the Central Yamal Peninsula, the southern tundra in Shchuch'ya River valley at the Edem'yaha mouth, the southern part of the Yamal Peninsula, and the southern forest tundra near Labytnangi Town. ¹⁴C dates of wood remains from the tundra in the Yamal Peninsula could be used to reconstruct a northern limit of forest during the Holocene Optimum. The wood layers at the bottom of the peat give evidence for immigration of trees further north beyond the present boundary. The first forest appearance in the Seyaha River valley area is dated about 9 ka BP according to the oldest peat date in the Seyaha cross section. This suggests that summer temperatures were higher than at present. Very fast accumulation of peat (around 5 m/ka: about 9-8 ka BP at Seyaha and about 7-6 ka BP at Shchuch'ya) also supports this observation. In contrast, oxygen isotope composition of Holocene syngenetic ice wedges from the area (δ¹⁸O= −19.1 to −20.3‰ in the Seyaha cross-section and −17.3 to −20.3‰ in the Shchuch'ya River) show that winter temperatures were significantly lower than presently, i.e. the climate during the Holocene Optimum was slightly more continental. The frozen peat near Labytnangi has thawed during the last 20 years, indicating global warming. |
format |
Dataset |
author |
Vasil'chuk, Yurij K Jungner, Höegne Vasil'chuk, Alla Constantinovna |
author_facet |
Vasil'chuk, Yurij K Jungner, Höegne Vasil'chuk, Alla Constantinovna |
author_sort |
Vasil'chuk, Yurij K |
title |
¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia |
title_short |
¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia |
title_full |
¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia |
title_fullStr |
¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia |
title_full_unstemmed |
¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia |
title_sort |
¹⁴c dating of peat and δ¹⁸o-δd in ground ice from northwest siberia |
publisher |
PANGAEA |
publishDate |
2020 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.919177 https://doi.org/10.1594/PANGAEA.919177 |
op_coverage |
MEDIAN LATITUDE: 68.401544 * MEDIAN LONGITUDE: 69.215420 * SOUTH-BOUND LATITUDE: 66.658056 * WEST-BOUND LONGITUDE: 66.300556 * NORTH-BOUND LATITUDE: 70.369725 * EAST-BOUND LONGITUDE: 72.508333 * DATE/TIME START: 1996-08-01T00:00:00 * DATE/TIME END: 1997-07-31T00:00:00 |
long_lat |
ENVELOPE(69.873,69.873,70.816,70.816) ENVELOPE(66.418,66.418,66.657,66.657) ENVELOPE(66.300556,72.508333,70.369725,66.658056) |
geographic |
Yamal Peninsula Labytnangi |
geographic_facet |
Yamal Peninsula Labytnangi |
genre |
Permafrost and Periglacial Processes Tundra Yamal Peninsula Siberia |
genre_facet |
Permafrost and Periglacial Processes Tundra Yamal Peninsula Siberia |
op_relation |
Vasil'chuk, Yurij K; Jungner, Höegne; Vasil'chuk, Alla Constantinovna (2001): ¹⁴C Dating of Peat and δ¹⁸O-δD in Ground Ice From Northwest Siberia. Radiocarbon, 43(2B), 527-540, https://doi.org/10.1017/S0033822200041187 Hantemirov, Rashit; Shiyatov, S G (1999): Radiocarbon and dendrochronological dates of subfossil wood from Yamal Peninsula and usage of those in studies of forest-tundra ecosystems dynamics. In Biota of Pre-Urals Subarctic in Late Pleistocene and Holocene. Ekaterinburg. P.3-22. [In Russian] Vasil'chuk, Yurij K (1992): Oxygen Isotope Composition of Ground Ice (Application to Paleogeocryological Reconstructions) [in Russian]. Theor. Probl. Dept., RAS, Moscow University, Research Institute of Engineering for Construction (PNIIIS), Moscow (Volume 1, 420 pp., Volume 2, 264 pp.) Vasil'chuk, Yurij K; Vasil'chuk, Alla Constantinovna (1995): Ice-wedge formation in northern Asia during the Holocene. Permafrost and Periglacial Processes, 6(3), 273-279, https://doi.org/10.1002/ppp.3430060309 https://doi.pangaea.de/10.1594/PANGAEA.919177 https://doi.org/10.1594/PANGAEA.919177 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.919177 https://doi.org/10.1017/S0033822200041187 https://doi.org/10.1002/ppp.3430060309 |
_version_ |
1766167245734543360 |