Thick polygonal peatlands in continuous permafrost zone of West Siberia

The study focuses on the structure of thick peatlands with syngenetic ice wedges in the Yamal and Gydan Peninsulas (northern West Siberia). Thick polygonal peatlands formed in floodplains and laidas or in lacustrine-palustrine inliers within hypsometrically higher terraces. Peat accumulated at rates...

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Bibliographic Details
Main Authors: Vasil'chuk, Yurij K, Vasil'chuk, Alla Constantinovna
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
Holocene
Ice wedges
northern West Siberia
peat accumulation rate
peatlands
radiocarbon
Stable isotope
Arctic
Ice
permafrost
Polar Research
Tundra
wedge*
Siberia
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.919617
https://doi.org/10.1594/PANGAEA.919617
Description
Summary:The study focuses on the structure of thick peatlands with syngenetic ice wedges in the Yamal and Gydan Peninsulas (northern West Siberia). Thick polygonal peatlands formed in floodplains and laidas or in lacustrine-palustrine inliers within hypsometrically higher terraces. Peat accumulated at rates of several mm per year so the peatland reached thicknesses of 4-5 m in 700-1000 years. The presence of Boreal (Holocene) tree macrofossils at the base of many peat sections confirms the tree line advance as far as the contemporary tundra during the Holocene optimum.

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