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Rate of Glacial Valley Deepening During the Late Quaternary in Assynt, Scotland
Author(s) -
Hebdon N. J.,
Atkinson T. C.,
Lawson T. J.,
Young I. R.
Publication year - 1997
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/(sici)1096-9837(199703)22:3<307::aid-esp759>3.0.co;2-u
Subject(s) - glacial period , speleothem , quaternary , interglacial , geology , cave , physical geography , erosion , geomorphology , paleontology , archaeology , geography
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. © 1997 by John Wiley & Sons, Ltd.