Winter air temperature in the early and middle Holocene on the eastern coast of Daurkin Peninsula, Chukotka, reconstructed from stable isotopes of ice wedges ...

• Main Authors: Budantseva, Nadine A, Maslakov, Alexey A, Vasil'chuk, Yurij K, Baranskaya, Alisa V, Belova, N V, Vasil'chuk, Alla Constantinovna, Romanenko, Fedor A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2020
• Subjects: Chukotka; deuterium excess; Holocene; Hydrogen isotopes; Oxygen isotopes; paleotemperature reconstruction; Peatland; radiocarbon age; winter air temperature
• Online Access: https://dx.doi.org/10.1594/pangaea.919660; https://doi.pangaea.de/10.1594/PANGAEA.919660

The object of research is the Holocene massive ice veins on the Eastern coast of the Daurkin Peninsula, the easternmost part of the Chukotka. Peat bogs with ice veins occur on the surface of marine terraces (near Uelen and Lorino settlements) and on flood plain of the Koolen' Lake; the thickness of peat varies from 0.7 to 2.5 m. Radiocarbon dating of the peat enclosing the investigated ice veins near Uelen and Lorino indicated that the beginning of peat accumulation began at the end of Late Pleistocene - early Holocene, about 11 cal ka BP. On the flood plain of the Koolen' Lake peat bogs began to accumulate in the middle Holocene, i.e. around 6 cal ka BP. At the initial stage of peat bogs formation the rate of peat accumulation was high and could reach 1 cm/10 years. Ice veins occur at a depth of 0.5-1 m, and their lower parts are located in the underlying peat sandy loams and loams. In the upper levels of the peat bogs, narrow present-day ice veins are found, which are sometimes embedded in the upper parts ... : 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. ...