Raimund Muscheler
Professor
Glacial history of Northeast Greenland: cosmogenic nuclide constraints on chronology and ice dynamics
Author
Summary, in English
Results from cosmogenic 10Be and 26Al exposure dating show that during the LGM, local cold-based ice-caps covered and preserved weathered interfjord plateaus in the Northeast Greenland fjord zone, whereas fjord troughs were filled up with dynamic ice draining the Greenland Ice Sheet. The dynamic ice reached at least 250 m a.s.l. at the mouth of Scoresby Sund at the southernmost end and probably ~600 m a.s.l. at the northernmost end of the fjord zone, indicating that there was a N-S gradient in glacial style presumably reflecting regional differences in topography of the coastal areas. The results presented in this thesis reveals a dynamic picture for the northeastern sector of the Greenland Ice Sheet suggesting that LGM ice margins were substantially more advanced than indicated by earlier reconstructions from the terrestrial record.
Department/s
- Quaternary Sciences
Publishing year
2008
Language
English
Publication/Series
Lundqua thesis
Issue
61
Full text
- Available as PDF - 18 MB
- Available as PDF - 2 MB
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Document type
Dissertation
Publisher
Department of Geology, Lund University
Topic
- Geology
Keywords
- Jameson Land
- Store Koldewey
- Scoresby Sund
- Ice dynamics
- Glacial history
- Cosmogenic
- Greenland Ice Sheet
Status
Published
Supervisor
- Christian Hjort
- Per Möller
- Svante Björck
- Raimund Muscheler
ISBN/ISSN/Other
- ISSN: 0281-3033
- ISSN: 0281-3033
- ISBN: 978-91-87465-37-6
Defence date
11 April 2008
Defence time
13:15
Defence place
Department of Geology, Sölvegatan 12, Pangea
Opponent
- Jon Landvik (Prof.)