Journal
BOREAS
Volume 37, Issue 4, Pages 574-588Publisher
WILEY
DOI: 10.1111/j.1502-3885.2008.00050.x
Keywords
-
Funding
- British Society of Geomorphology
- Quaternary Research Association
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Advances in luminescence dating over the past 25 years have allowed initial problems in dating periglacial features to be largely overcome. In periglacial contexts, luminescence dating has been applied on aeolian sand-sheet deposits and dunes where coarse-grained quartz optically stimulated luminescence ages appear to give the most precise and accurate ages compared to other independent chronological evidence. Whereas sand sheets appear to have remained preserved from Lateglacial times in both North America and Europe, periglacial dunefields have experienced widespread reworking throughout the Holocene. Luminescence dating has also been applied to sediment infilling wedge and involution structures producing ages from the Lateglacial back to beyond 150 kyr. However, these are more complex depositional features and new work at the single-grain level highlights the possibility that single samples may contain multiple thermal contraction cracks of different ages as well as incompletely bleached sediment. Other periglacial deposits await further advances in luminescence or other chronometric techniques before their age can be determined with confidence.
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