Author
Abstract
Coversand deposits are prevalent across much of central and eastern continental Europe as distinct sedimentary units, but in comparison UK coversands are fragmented and relatively thin. Arguably the best exposures of UK coversands are to be found in northern Lincolnshire, west of the Lincolnshire Wolds, where there are extensive coversand deposits up to 7 m thick. Stratigraphic, sedimentological, geomorphological and biological evidence show that the Lincolnshire coversand is composed predominantly of a cold climate aeolian sandsheet. The same evidence also indicates provenance and westerly palaeowinds associated with coversand deposition. For the first time, through the application of both thermoluminescence and radiocarbon dating, a good chronological framework for coversand deposition in Lincolnshire has been established. This shows the main phase of coversand deposition took place between c. 12,500 to 11,400 calendar years ago during the Younger Dryas climatic oscillation. The north Lincolnshire coversands are therefore contemporary with the Younger Coversands found in The Netherlands and Denmark. © 1998 John Wiley & Sons, Ltd. Les sables de couverture sont très répandus dans l'Europe continentale centrale et orientale tandis qu'ils sont fragmentaires et relativement peu épais dans le Royaume‐Uni. Il est probable que les meilleures coupes dans des sables de couverture du Royaume‐Uni sont celles du nord du Lincolnshire, à l'ouest des collines calcaires, où se trouvent des dépôts étendus de sables de couverture de plus de 7 m d'épaisseur. Des indications stratigraphiques, sédimentologiques, géomorphologiques et biologiques montrent que ces sables de couverture sont constitués principalement d'une nappe de sables éoliens mis en place sous climat froid. Le même dépôt indique l'action de vents qui autrefois venaient de l'Ouest. Pour la première fois, par thermoluminescence et par 14C, une bon schéma chronologique a été établi en ce qui concerne le dépôt de ces sables de couverture. La phase principale de dépôt de ces sables s'est produite entre 12,500 et 11,400 ans (années calendrier B.P.), pendant l'oscillation climatique du dernier Dryas. Les sables de couverture du Lincolnshire septentrional sont donc contemporains des sables de couverture les plus récents du Danemark et des Pays‐Bas. Copyright © 1998 John Wiley & Sons, Ltd.
Suggested Citation
Mark D. Bateman, 1998.
"The origin and age of coversand in north Lincolnshire, UK,"
Permafrost and Periglacial Processes, John Wiley & Sons, vol. 9(4), pages 313-325, October.
Handle:
RePEc:wly:perpro:v:9:y:1998:i:4:p:313-325
DOI: 10.1002/(SICI)1099-1530(199810/12)9:43.0.CO;2-P
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