Defining the centre of the last Scottish ice sheet: the parallel Roads of Glen Roy, Scottish Highlands

Alastair George Dawson, S. Hampton, P. Fretwell, P. Greengrass, S. Harrison

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The Parallel Roads of Glen Roy, Scottish Highlands, represent a series of ice-dammed lake shorelines produced during the cold climate of the Younger Dryas. it is shown here that each lake shoreline exhibits evidence of glacio-isostatic tilting associated with the decay of the last (Late Devensian) ice sheet. The directions of tilting of the three shorelines (in the quadrant between north and east), are at variance with published glacio-isostatic uplift isobases based on marine shoreline data that suggest a pattern of decreased uplift towards the northwest. The gradient of shoreline tilting (between 0.11 and 0.14 m km(-1)) is similar to measured regional tilts of a well-developed marine shoreline (the Main Rock Platform) considered to have been produced in Scotland during the same period of extreme cold climate. Consideration of the ice-dammed lake shoreline data also points to the former occurrence of two separate episodes of tectonic activity during the Younger Dryas. Copyright (C) 2002 John Wiley Sons, Ltd.

Original languageEnglish
Pages (from-to)527-533
Number of pages7
JournalJournal of Quaternary Science
Volume17
Issue number5-6
Early online date31 Oct 2002
DOIs
Publication statusPublished - Oct 2002

Keywords

  • glacio-isostatic uplift
  • ice-dammed lakes
  • Younger Dryas
  • shorelines
  • BRITISH-ISLES
  • SCOTLAND
  • SEA

Cite this

Defining the centre of the last Scottish ice sheet : the parallel Roads of Glen Roy, Scottish Highlands. / Dawson, Alastair George; Hampton, S.; Fretwell, P.; Greengrass, P.; Harrison, S.

In: Journal of Quaternary Science, Vol. 17, No. 5-6, 10.2002, p. 527-533.

Research output: Contribution to journalArticle

Dawson, Alastair George ; Hampton, S. ; Fretwell, P. ; Greengrass, P. ; Harrison, S. / Defining the centre of the last Scottish ice sheet : the parallel Roads of Glen Roy, Scottish Highlands. In: Journal of Quaternary Science. 2002 ; Vol. 17, No. 5-6. pp. 527-533.
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