Details
| Original language | English |
|---|---|
| Pages (from-to) | 677-687 |
| Number of pages | 11 |
| Journal | Journal of Quaternary Science |
| Volume | 37 |
| Issue number | 4 |
| Publication status | Published - 26 May 2022 |
Abstract
Compared with the western European Alps, the ice extent during the Last Glacial Maximum (LGM) and the subsequent deglaciation history of the eastern Alps east of the Tauern Window remain less well constrained. Also, considerable discrepancies exist between the mapped LGM ice margin and the ice extent predicted by ice-sheet models. Here we present the first 10Be surface exposures ages from two regions east of the Tauern Window (the Gurktal and Lavantal Alps), which provide constraints on the LGM ice extent and the deglaciation history. Our results show that the deglaciation of the Gurktal Alps occurred between 16 and 14 ka, which agrees with the predictions from ice-sheet models. In contrast, the 10Be ages from the Lavantal Alps located farther east are either LGM in age or predate the LGM, indicating that these regions were ice free or only partially covered by LGM ice. This finding suggests that ice-sheet models may have overestimated the LGM ice extent in the easternmost Alps. In conclusion, our study highlights the need for more age data from the eastern Alps to refine the location of the LGM ice margin and the deglaciation history, which is also crucial for climate-evolution and postglacial-rebound models.
ASJC Scopus subject areas
- Arts and Humanities(all)
- Arts and Humanities (miscellaneous)
- Earth and Planetary Sciences(all)
- Earth and Planetary Sciences (miscellaneous)
- Earth and Planetary Sciences(all)
- Palaeontology
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In: Journal of Quaternary Science, Vol. 37, No. 4, 26.05.2022, p. 677-687.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - LGM ice extent and deglaciation history in the Gurktal and Lavantal Alps(eastern European Alps): first constraints from 10Be surface exposuredating of glacially polished quartz veins
AU - Wölfler, Andreas
AU - Hampel, Andrea
AU - Dielforder, Armin
AU - Hetzel, Ralf
AU - Glotzbach, Christoph
N1 - Funding Information: We thank the two anonymous reviewers for their constructive comments that improved the manuscript. We also thank Christiane Wenske and Anne Niehus for their help during preparation of the samples for 10Be exposure dating and the team of the CologneAMS for the timely analysis of all samples. Open Access funding enabled and organized by Projekt DEAL.
PY - 2022/5/26
Y1 - 2022/5/26
N2 - Compared with the western European Alps, the ice extent during the Last Glacial Maximum (LGM) and the subsequent deglaciation history of the eastern Alps east of the Tauern Window remain less well constrained. Also, considerable discrepancies exist between the mapped LGM ice margin and the ice extent predicted by ice-sheet models. Here we present the first 10Be surface exposures ages from two regions east of the Tauern Window (the Gurktal and Lavantal Alps), which provide constraints on the LGM ice extent and the deglaciation history. Our results show that the deglaciation of the Gurktal Alps occurred between 16 and 14 ka, which agrees with the predictions from ice-sheet models. In contrast, the 10Be ages from the Lavantal Alps located farther east are either LGM in age or predate the LGM, indicating that these regions were ice free or only partially covered by LGM ice. This finding suggests that ice-sheet models may have overestimated the LGM ice extent in the easternmost Alps. In conclusion, our study highlights the need for more age data from the eastern Alps to refine the location of the LGM ice margin and the deglaciation history, which is also crucial for climate-evolution and postglacial-rebound models.
AB - Compared with the western European Alps, the ice extent during the Last Glacial Maximum (LGM) and the subsequent deglaciation history of the eastern Alps east of the Tauern Window remain less well constrained. Also, considerable discrepancies exist between the mapped LGM ice margin and the ice extent predicted by ice-sheet models. Here we present the first 10Be surface exposures ages from two regions east of the Tauern Window (the Gurktal and Lavantal Alps), which provide constraints on the LGM ice extent and the deglaciation history. Our results show that the deglaciation of the Gurktal Alps occurred between 16 and 14 ka, which agrees with the predictions from ice-sheet models. In contrast, the 10Be ages from the Lavantal Alps located farther east are either LGM in age or predate the LGM, indicating that these regions were ice free or only partially covered by LGM ice. This finding suggests that ice-sheet models may have overestimated the LGM ice extent in the easternmost Alps. In conclusion, our study highlights the need for more age data from the eastern Alps to refine the location of the LGM ice margin and the deglaciation history, which is also crucial for climate-evolution and postglacial-rebound models.
UR - http://www.scopus.com/inward/record.url?scp=85120088064&partnerID=8YFLogxK
U2 - 10.1002/jqs.3399
DO - 10.1002/jqs.3399
M3 - Article
VL - 37
SP - 677
EP - 687
JO - Journal of Quaternary Science
JF - Journal of Quaternary Science
SN - 0267-8179
IS - 4
ER -