✦ LIBER ✦

Rate of Glacial Valley Deepening During the Late Quaternary in Assynt, Scotland

✍ Scribed by Hebdon, N. J.; Atkinson, T. C.; Lawson, T. J.; Young, I. R.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 271 KB
Volume: 22
Category: Article
ISSN: 0360-1269
DOI: 10.1002/(sici)1096-9837(199703)22:3<307::aid-esp759>3.0.co;2-u

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✦ Synopsis

A dated landscape history of the Allt nan Uamh valley in the Assynt area is constructed, spanning the last 300 ka, using geomorphological analysis, U-series speleothem dating, and existing cave surveys. The mean rate of valley deepening is estimated to lie between 47 and 68 m per glacial/interglacial cycle of 100 ka. This, combined with an estimated duration of glaciation, implies glacial erosion rates of about 2 mm a -1 , in agreement with modern process measurements.