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Geochronology of the Upper Ice Complex (Yedoma) exposed in the Batagay Megaslump, East Siberia

The Batagay Megaslump in eastern Siberia exposes one of the oldest permafrost archives and provides insights into Beringian paleoenvironments. However, its geochronology calls for improvement given known difficulties with permafrost dating and current developments in dating techniques. Here, we pres...

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Hauptverfasser: Opel, Thomas (VerfasserIn) , Wolter, Juliane (VerfasserIn) , Kizyakov, Alexander (VerfasserIn) , Grotheer, Hendrik (VerfasserIn) , Gentz, Torben (VerfasserIn) , Mollenhauer, Gesine (VerfasserIn) , Fritz, Michael (VerfasserIn) , Fuchs, Margret (VerfasserIn) , Lauer, Tobias (VerfasserIn) , Mittelstraß, Dirk (VerfasserIn) , Meyer, Hanno (VerfasserIn) , Wetterich, Sebastian (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 20 Feb 2026
In: Arctic, antarctic, and alpine research
Year: 2026, Jahrgang: 58, Heft: 1, Pages: 1-26
ISSN:1938-4246
DOI:10.1080/15230430.2026.2622802
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1080/15230430.2026.2622802
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Verfasserangaben:Thomas Opel, Juliane Wolter, Alexander Kizyakov, Hendrik Grotheer, Torben Gentz, Gesine Mollenhauer, Michael Fritz, Margret Fuchs, Tobias Lauer, Dirk Mittelstraß, Hanno Meyer, and Sebastian Wetterich
Beschreibung
Zusammenfassung:The Batagay Megaslump in eastern Siberia exposes one of the oldest permafrost archives and provides insights into Beringian paleoenvironments. However, its geochronology calls for improvement given known difficulties with permafrost dating and current developments in dating techniques. Here, we present the first systematic geochronological study of the Upper Ice Complex (Yedoma) that constitutes more than half of the exposed stratigraphy based on 135 radiocarbon dates and four post infrared infrared stimulated luminescence ages. Newly obtained radiocarbon ages of bulk sediment, wood, and non-wood macrofossils from the same sediment samples span between 55,000 yrs BP and 31,000 cal yrs BP and, supplemented by radiocarbon ages of wedge ice dissolved organic carbon, bulk sediment, and macrofossils, which allow an enhanced interpretation of the dating results. Luminescence ages from the Upper Ice Complex and the units below (149 to 56 ka) provide independent age control and refine the maximum age of the Upper Ice Complex to Marine Isotope Stage 5, supported by an age of 112.8 ± 8.4 ka and rejecting several finite radiocarbon ages close to detection limit. The present study provides a robust chronology for the interpretation of paleoenvironmental proxy data from the Upper Ice Complex and enhances the overall geochronology of the Batagay Megaslump.
Beschreibung:Online veröffentlicht: 20. Februar 2026
Gesehen am 10.04.2026
Beschreibung:Online Resource
ISSN:1938-4246
DOI:10.1080/15230430.2026.2622802

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