Oxygen isotope composition of Late Pleistocene syngenetic ice wedges from the Seyakha yedoma, Eastern Yamal Peninsula

Variations in δ¹⁸О were measured in the samples of Late Pleistocene ice wedge, collected in 2016 on the shore of the Gulf of Ob, near the Seyakha settlement. The values of δ¹⁸О in the upper fragment of the ice wedge vary from –25.75 to –23.15‰. The amplitude of horizontal variations in δ¹⁸О at +15.2...

Full description

Bibliographic Details
Main Authors: Vasil'chuk, Yurij K, Budantseva, Nadine A, Vasil'chuk, Alla Constantinovna
Format: Dataset
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2021
Subjects:
Ice wedges
Late Pleistocene
oxygen isotope
radiocarbon age
Seyakha
Yamal Peninsula
Yedoma
Yedoma deposits
Sample ID
Equilibrium line altitude
δ18O
Sample comment
Mass spectrometer Finnigan Delta-V
Gulf of Ob
Online Access:https://dx.doi.org/10.1594/pangaea.933094
https://doi.pangaea.de/10.1594/PANGAEA.933094
Description
Summary:Variations in δ¹⁸О were measured in the samples of Late Pleistocene ice wedge, collected in 2016 on the shore of the Gulf of Ob, near the Seyakha settlement. The values of δ¹⁸О in the upper fragment of the ice wedge vary from –25.75 to –23.15‰. The amplitude of horizontal variations in δ¹⁸О at +15.2 m height is 1.49‰ (–23.41 to –24.9‰). The lower fragment of the ice wedge at +6 m height is characterized by a broader variation range of δ¹⁸O compared to the upper one: δ¹⁸О varies in the horizontal direction from –23.41 to –26.63‰ : The isotope dates of water and ice samples were obtained at the isotope laboratory of the Department of Geography, Moscow State University, using a Delta-V mass spectrometer with a standard gas-bench option. For measurements we used the V-SMOW, GISP, and SLAP international standards, and the standards of the laboratory.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.The research was financially supported by the Russian Scientific Foundation (grant Nr 19-17-00126, field studies and isotope analysis) and Russian Foundation for Basic Research (grant Nr 18-05-60272, radiocarbon dating and calculations).

Similar Items