Vasil'chuk, Yurij K; Budantseva, Nadine A; Maslakov, Alexey A; Vasil'chuk, Alla Constantinovna; Vasil'chuk, Jessica Yurevna (2024): AMS radiocarbon dating (22-27 cal Ka BP) of massive ice on the coast of Mechigmen and Lavrentia Bays, Eastern Chukotka, and stable isotope (δ18O, δ2H) composition of dated ice [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.971505
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Abstract:
Field studies of the Eastern Chukotka's massive ice carried out in 2016, 2017, and 2020. The three key sites of the studied massive ice bodies are located on the coast of Mechigmen Bay: a) 2 km southeast from the Chulkheveem (Akkani) River; b) 2 km south of the Lavrentiya settlement; and c) 7 km south of the Lavrentiya settlement. Direct AMS radiocarbon dating of organic micro-inclusions extracted from the ice determined the radiocarbon age of three massive ice bodies with a high degree of accuracy. The study revealed the intrasedimental origin of the studied massive ice bodies, which formed epigenetically at the end of the Late Pleistocene (22–27 cal ka BP) during the final stage of MIS2. Variations of δ18O and δ2H values in ice samples are insignificant: by about 10‰ for δ18O values (from –14.8‰ to –24.5‰) and about 75‰ for the δ2H values (from -116‰ to -191‰). Slopes of the δ2H-δ18O lines lower than 8 indicate the evaporation of initial water or 18O isotope fractionation during freezing.
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Vasil'chuk, Yurij K; Budantseva, Nadine A; Maslakov, Alexey A; Vasil'chuk, Alla Constantinovna; Vasil'chuk, Jessica Yurevna (2024): First direct radiocarbon dating (22-27 cal Ka BP) of massive ice at the Mechigmen and Lavrentia Bays coast, Eastern Chukotka. Radiocarbon, 66(2), 410-420, https://doi.org/10.1017/RDC.2024.21
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Coverage:
Median Latitude: 66.871336 * Median Longitude: 176.540687 * South-bound Latitude: 65.507889 * West-bound Longitude: 66.813000 * North-bound Latitude: 69.721000 * East-bound Longitude: -133.150000
Date/Time Start: 2016-09-04T01:30:00 * Date/Time End: 2020-07-30T02:00:00
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)
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3 datasets
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Datasets listed in this bundled publication
- Vasil'chuk, YK; Budantseva, NA; Maslakov, AA et al. (2024): AMS radiocarbon ages of three massive ice bodies on the coast of Mechigmen Bay, Eastern Chukotka, and stable isotope (δ18O, δ2H) composition of dated ice. https://doi.org/10.1594/PANGAEA.971494
- Vasil'chuk, YK; Budantseva, NA; Maslakov, AA et al. (2024): Stable isotope (δ18О, δ2H and dexc) minimum, mean, and maximum values for massive ice, Eastern Chukotka. https://doi.org/10.1594/PANGAEA.971499
- Vasil'chuk, YK; Budantseva, NA; Maslakov, AA et al. (2024): Results of AMS dating of massive ice in northern Canada and Yamal Peninsula. https://doi.org/10.1594/PANGAEA.971500