Vasil'chuk, Yurij K; Vasil'chuk, Alla Constantinovna; Stanilovskaya, Julia V (2020): Early Holocene climate signals from stable isotope composition of ice wedges in the Chara Basin, northern Transbaikalia, Russia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.915943
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Abstract:
Stable isotope composition of syngenetic and epigenetic ice wedges, radiocarbon age, and pollen spectra of the surrounding deposits were studied during long term investigations at the "Belyi Klyuch" site on the first (6-8 m height) terrace of the Chara River (720 m.a.s.l.) in northern Transbaikalia to assess climatic conditions during ice-wedge formation. It was revealed that Holocene ice wedges had been formed from 10 to 7.5 ka 14C BP. The isotope composition (δ18О, δ²H) of relict ice wedges is the lightest and amounts −23‰ and −185‰, correspondingly. The isotopic compositions of ice lenses from sandy loam above ice wedges are −15.7‰ and −133‰; of small ice wedge in peat and sand are −15.3‰ and −117.9‰, accordingly. Interpretation of the ice wedge isotope composition has yielded that mean winter temperatures during cold stages of Holocene optimum were lower than today, during warm stages they were close to modern ones. During the coldest stages of Holocene optimum the total annual freezing index varied from −5100 to −5700 °C degree days, i.e. 300-600 °C degree days colder than during extremely severe modern winters. The total annual thawing index varied from 1300 to 1800 °C degree days, which was slightly higher than modern ones.
Related to:
Vasil'chuk, Yurij K; Vasil'chuk, Alla Constantinovna; Stanilovskaya, Julia V (2018): Early Holocene climate signals from stable isotope composition of ice wedges in the Chara Basin, northern Transbaikalia, Russia. Geoscience Frontiers, 9(2), 471-483, https://doi.org/10.1016/j.gsf.2017.04.008
Further details:
Meyer, Hanno; Schönicke, Lutz; Wand, Ulrich; Hubberten, Hans-Wolfgang; Friedrichsen, Hans (2000): Isotope Studies of Hydrogen and Oxygen in Ground Ice - Experiences with the Equilibration Technique. Isotopes in Environmental and Health Studies, 36(2), 133-149, https://doi.org/10.1080/10256010008032939
Reimer, Paula J; Bard, Edouard; Beck, J Warren; Blackwell, Paul G; Ramsey, Christopher Bronk; Buck, Caitlin E; Cheng, Hai; Edwards, R Lawrence; Friedrich, Michael; Grootes, Pieter Meiert; Guilderson, Thomas P; Haflidason, Haflidi; Hajdas, Irka; Hatte, Christine; Heaton, T J; Hoffmann, Dirk L; Hogg, Alan G; Hughen, Konrad A; Kaiser, Klaus-Felix; Kromer, Bernd; Manning, Sturt W; Niu, Mu; Reimer, Ron W; Richards, David A; Scott, Marian; Southon, John R; Staff, Richard A; Turney, Chris S M; van der Plicht, Johannes (2013): IntCal13 and Marine13 Radiocarbon Age Calibration Curves 0–50,000 Years cal BP. Radiocarbon, 55(4), 1869-1887, https://doi.org/10.2458/azu_js_rc.55.16947
Vaikmäe, Rein; Vasil'chuk, Yurij K (1991): Oxygen Isotope Analysis of Ground Ice on the North of Western Siberia, Yakutia and Chukotka [in Russian]. Estonia Institute of Geology publ., Tallinn, 70 pp
Coverage:
Median Latitude: 56.718155 * Median Longitude: 119.229532 * South-bound Latitude: 56.416667 * West-bound Longitude: 118.103000 * North-bound Latitude: 56.836667 * East-bound Longitude: 124.883333
Date/Time Start: 2008-10-02T00:00:00 * Date/Time End: 2008-10-15T00:00:00
Comment:
Data was submitted and proofread by Yurij K Vasil'chuk and Lyubov Bludushkina at the faculty of Geography, department of Geochemistry of Landscapes and Geography of Soils, Lomonosov Moscow State University.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets
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Datasets listed in this bundled publication
- Vasil'chuk, YK; Vasil'chuk, AC; Stanilovskaya, JV (2020): Radiocarbon ages from the organic plant material from the ice wedge surrounding deposits in the Chara Basin, northern Transbaikalia, Russia. https://doi.org/10.1594/PANGAEA.915926
- Vasil'chuk, YK; Vasil'chuk, AC; Stanilovskaya, JV (2020): Stable oxygen isotopes composition (δ¹⁸O) in ice wedges and segregated ices in the Chara Basin, northern Transbaikalia, Russia. https://doi.org/10.1594/PANGAEA.915928
- Vasil'chuk, YK; Vasil'chuk, AC; Stanilovskaya, JV (2020): Stable oxygen isotopes composition (δ¹⁸O), hydrogen (δ²H) and deuterium excess values in ice wedges and segregated ices in the Chara Basin, northern Transbaikalia, Russia. https://doi.org/10.1594/PANGAEA.915930