Professor Stewart Jamieson stewart.jamieson@durham.ac.uk
Professor
An ancient river landscape preserved beneath the East Antarctic Ice Sheet
Jamieson, Stewart S. R.; Ross, Neil; Paxman, Guy J. G.; Clubb, Fiona J.; Young, Duncan A.; Yan, Shuai; Greenbaum, Jamin; Blankenship, Donald D.; Siegert, Martin J.
Authors
Neil Ross
Dr Guy Paxman guy.j.paxman@durham.ac.uk
Assistant Professor
Dr Fiona Clubb fiona.j.clubb@durham.ac.uk
Assistant Professor
Duncan A. Young
Shuai Yan
Jamin Greenbaum
Donald D. Blankenship
Martin J. Siegert
Abstract
The East Antarctic Ice Sheet (EAIS) has its origins ca. 34 million years ago. Since then, the impact of climate change and past fluctuations in the EAIS margin has been reflected in periods of extensive vs. restricted ice cover and the modification of much of the Antarctic landscape. Resolving processes of landscape evolution is therefore critical for establishing ice sheet history, but it is rare to find unmodified landscapes that record past ice conditions. Here, we discover an extensive relic pre-glacial landscape preserved beneath the central EAIS despite millions of years of ice cover. The landscape was formed by rivers prior to ice sheet build-up but later modified by local glaciation before being dissected by outlet glaciers at the margin of a restricted ice sheet. Preservation of the relic surfaces indicates an absence of significant warm-based ice throughout their history, suggesting any transitions between restricted and expanded ice were rapid.
Citation
Jamieson, S. S. R., Ross, N., Paxman, G. J. G., Clubb, F. J., Young, D. A., Yan, S., …Siegert, M. J. (2023). An ancient river landscape preserved beneath the East Antarctic Ice Sheet. Nature Communications, 14(1), Article 6507. https://doi.org/10.1038/s41467-023-42152-2
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 2, 2023 |
Online Publication Date | Oct 24, 2023 |
Publication Date | 2023 |
Deposit Date | Oct 26, 2023 |
Publicly Available Date | Oct 27, 2023 |
Journal | Nature Communications |
Publisher | Nature Research |
Peer Reviewed | Peer Reviewed |
Volume | 14 |
Issue | 1 |
Article Number | 6507 |
DOI | https://doi.org/10.1038/s41467-023-42152-2 |
Public URL | https://durham-repository.worktribe.com/output/1818473 |
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