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A model for Devensian and Flandrian glacial rebound and sea-level change in Scotland

  • Kurt Lambeck
Chapter
Part of the NATO ASI Series book series (ASIC, volume 334)

Abstract

The Late Devensian and Flandrian deglaciation of Great Britain produces a complex pattern of sea-level change for Scotland because of the rebound of the region when the load is removed, because of the addition of meltwater from the decay of the world’s major ice sheets at about the same time, and because of the rebound occurring from the adjacent Fennoscandian deglaciation. The sea-level observations contain information on the Earth’s rheology as well as on the evolution of the ice sheets themselves. These data are particularly sensitive to the structure of the upper mantle beneath Britain and yield values of 3xl020 Pa s for the upper mantle viscosity and about 100 km for the lithospheric thickness. The ice sheet at the time of maximum glaciation at about 18 000 a BP was less extensive than assumed in the models of Denton & Hughes (1981) and Boulton et al. (1977) and is more consistent with the minimum reconstruction proposed by Boulton et al. (1985). In particular, a major ice sheet could not have existed over the North Sea much after about 23 000 a BP. Also, the ice sheet was less extensive over the continental shelf west of Scotland than assumed in these maximum reconstruction models.

Keywords

Lithospheric Thickness Mantle Viscosity Maximum Glaciation Moray Firth Glacial Rebound 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1991

Authors and Affiliations

  • Kurt Lambeck
    • 1
  1. 1.Research School of Earth SciencesThe Australian National UniversityCanberraAustralia

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