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dc.contributor.authorVasil'chuk, Y. K.
dc.contributor.authorJungner, Högne
dc.contributor.authorVasil'chuk, A. C.
dc.date.accessioned2021-02-11T21:31:44Z
dc.date.available2021-02-11T21:31:44Z
dc.date.issued2001-01-01
dc.identifier.citationVasil'chuk, Y. K., Jungner, H., & Vasil'chuk, A. C. (2001). 14C dating of peat and delta-18O-delta-D in ground ice from Northwest Siberia. Radiocarbon, 43(2B), 527-540.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200041187
dc.identifier.urihttp://hdl.handle.net/10150/654399
dc.descriptionFrom the 17th International Radiocarbon Conference held in Jerusalem, Israel, June 18-23, 2000.
dc.description.abstractWe 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 (delta-18O = -19.1 to -20.3 per mil in the Seyaha cross-section and -17.3 to -20.3 per mil 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.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjecttundra
dc.subjectD H
dc.subjectTyumen Russian Federation
dc.subjectYamal
dc.subjectYamal Nenets Russian Federation
dc.subjectfrozen ground
dc.subjectnorthwestern Siberia
dc.subjectthawing
dc.subjectground ice
dc.subjectice
dc.subjectdeuterium
dc.subjectO 18 O 16
dc.subjecthydrogen
dc.subjectoxygen
dc.subjectisotope ratios
dc.subjectHolocene
dc.subjectRussian Federation
dc.subjectSiberia
dc.subjectpeat
dc.subjectCommonwealth of Independent States
dc.subjectsediments
dc.subjectAsia
dc.subjectCenozoic
dc.subjectQuaternary
dc.subjectC 14
dc.subjectcarbon
dc.subjectdates
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectstable isotopes
dc.subjectabsolute age
dc.title14C Dating of Peat and delta-18O-delta-D in Ground Ice from Northwest Siberia
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume43
dc.source.issue2B
dc.source.beginpage527
dc.source.endpage540
refterms.dateFOA2021-02-11T21:31:44Z


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