Radiocarbon Age and Stable Oxygen and Hydrogen Isotopes in a Late Pleistocene Ice Wedge in the Vilyui River Basin

• Published in: Doklady earth sciences Vol. 506; no. 2; pp. 834 - 838
• Main Authors: Vasil’chuk, Yu. K., Budantseva, N. A., Vasil’chuk, A. C., Ginzburg, A. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.10.2022; Springer; Springer Nature B.V
• Subjects: Air temperature; Carbon 14; Earth and Environmental Science; Earth Sciences; Geography; Hydrogen; Hydrogen isotopes; Ice; Ice formation; Isotopes; Mass spectrometry; Mass spectroscopy; Outcrops; Oxygen; Pleistocene; Radiocarbon dating; Radiometric dating; River basins; Rivers; Sea level; Water analysis; stable isotopes; Late Pleistocene; yedoma; palynological analysis; deuterium; AMS radiocarbon dating; ice wedges; Vilyui River basin; oxygen; January paleotemperature
• ISSN: 1028-334X; 1531-8354
• DOI: 10.1134/S1028334X22600451

The dating of microinclusions of organic material in a sample from the upper part of the Pleistocene syngenetic ice wedge, exposed in an outcrop of the Vilyui yedoma, located in the north of Yakutia, near the village of Kysyl-Syr (coordinates: 63°53′19″ N, 122°46′09″ E, height above sea level 100 m), was performed using accelerator mass spectrometry (AMS). The dated fragment of the ice wedge was formed about 22.5–22.3 cal. ka BP (18.46 ka radiocarbon years BP). Based on the isotopic data, the mean January air temperature of the Late Pleistocene was calculated from 22 to 23 cal. ka BP for the Vilyui section. It is shown that the mean January air paleotemperature during this period in the basin of the Vilyui River varied from –44 to –42°C.