The Late-Quaternary deposits of the middle Dyfi Valley, Wales
โ Scribed by G. S. P. Thomas; A. J. Summers; R. V. Dackombe
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 807 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0072-1050
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โฆ Synopsis
Abstract
The surficial deposits and landforms of the middle Dyfi Valley, Wales, are examined and a sequence of glacial, glacioโfluvial and glacioโlacustrine sediments is identified. This is considered to relate to a late stage in the wastage of the LateโDevensian Merioneth iceโcap. A sequence of terrace gravels overlying the giacigenic succession represents dissection during early Flandrian times.
๐ SIMILAR VOLUMES
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/interglacia