Abstract
Traditional ice sheet reconstructions have suggested two distinctly different ice sheet regimes along the East Greenland continental margin during the Last Glacial Maximum (LGM): ice to the shelf break south of Scoresby Sund and ice extending no further than to the inner shelf at and north of Scoresby Sund. We report new Be-10 ages from erratic boulders perched at 250 m a.s.l. on the Kap Brewster peninsula at the mouth of Scoresby Sund. The average Be-10 ages, calculated with an assumed maximum erosion rate of 1 cm/ka and no erosion (respectively, 17.3 +/- 2.3 ka and 15.1 +/- 1.7 ka) overlap with a period of increased sediment input to the Scoresby Sund fan (19-15 ka). The results presented here suggest that ice reached at least 250 m a.s.l. at the mouth of Scoresby Sund during the LGM and add to a growing body of evidence indicating that LGM ice extended onto the outer shelf in northeast Greenland. (C) 2007 Elsevier Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 2316-2321 |
Journal | Quaternary Science Reviews |
Volume | 26 |
Issue number | 19-21 |
DOIs | |
Publication status | Published - 2007 |
Subject classification (UKÄ)
- Geology
Free keywords
- EROSION
- HISTORY
- CONTINENTAL-MARGIN
- SCORESBY SUND
- ARCTIC CANADA
- BAFFIN-ISLAND
- PLEISTOCENE
- LANDSCAPES
- JAMESON LAND
- PRESERVATION