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| Titel |
A multidisciplinary approach for the reconstruction of the last deglaciation in Torridon, NW Scotland. |
| VerfasserIn |
D. McCormack, D. H. B. Irving, S. H. Brocklehurst |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250019525
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| Zusammenfassung |
| During glaciations, north-west Scotland is particularly sensitive to fluctuations in the Gulf Stream, causing variations in ice volume and extent. The Last Glacial Maximum (23.7-22.0 ka BP) was followed by rapid deglaciation, interspersed with stillstands and readvances, which culminated in the Loch Lomond Stadial readvance during the Younger Dryas cooling event (12.5-11.5 ka BP).
Deglaciation and readvance is evident from the complex array of glacial features which are particularly striking in the Torridon area of Scotland. These have been investigated using a number of approaches: Field mapping, aerial photography, digital elevation models, ground-based LiDAR investigations, 10Be Cosmogenic nuclide dating and comparison with modern analogues in Alpine (Switzerland) and Arctic(Svalbard) regions.
Geomorphological mapping studies indicate multiple ice extents and reconfiguration of local ice-cover during the last deglaciation. Cosmogenic dates ranging from Dimlington Stadial (17.2 ± 1.54 ka BP) to Loch Lomond Stadial (11.3 ± 0.78 ka BP) age, suggest that ice was present in the Torridon region during the Late Glacial Interstadial and that final deglaciation took place through either a steady back-wasting of ice into cirques, or rapid backwasting and readvance. |
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