Widespread glacial erosion on the Scandinavian passive margin
Pedersen, Vivi; Knutsen, Åsne Rosseland; Pallisgaard-Olesen, Gustav; Andersen, Jane Lund; Moucha, Robert; Huismans, Ritske Sipke
Journal article, Peer reviewed
Published version
Åpne
Permanent lenke
https://hdl.handle.net/11250/2989643Utgivelsesdato
2021Metadata
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- Department of Earth Science [1103]
- Registrations from Cristin [10412]
Sammendrag
The topography in Scandinavia features enigmatic high-elevation low-relief plateau regions dissected by deep valleys and fjords. These plateau regions have long been interpreted as relict landforms of a preglacial origin, whereas recent studies suggest they have been modified significantly by glacial and periglacial denudation. We used late Pliocene–Quaternary source-to-sink analyses to untangle this scientific conundrum. We compared glacier-derived offshore sediment volumes with estimates of erosion in onshore valleys and fjords and on the inner shelf. Our results suggest that onshore valley and fjord erosion falls 61%–66% short of the offshore sink volume. Erosion on the inner shelf cannot accommodate this mismatch, implying that the entire Scandinavian landscape and adjacent shelf have experienced significant glacial erosion.