Evans, D. J.A., Bateman, M. D., Roberts, D. H., Medialdea, A., Hayes, L., Duller, G. A.T., Fabel, D. and Clark, C. D. (2016) Glacial Lake Pickering: stratigraphy and chronology of a proglacial lake dammed by the North Sea Lobe of the British-Irish Ice Sheet. Journal of Quaternary Science, 2, pp. 295-310. (doi: 10.1002/jqs.2833)
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Abstract
We report the first chronology, using four new optically stimulated luminescence dates, on the sedimentary record of Glacial Lake Pickering, dammed by the North Sea Lobe of the British–Irish Ice Sheet during the Dimlington Stadial (24–11 ka cal BP). Dates range from 17.6 ± 1.0 to 15.8 ± 0.9 ka for the sedimentation of the Sherburn Sands at East Heslerton, which were formed by multiple coalescing alluvial fans prograding into the falling water levels of the lake and fed by progressively larger volumes of debris from the Wolds. Fan formation ceased ∼15.8 ka, at a time when permafrost was degrading and nival-fed streams were no longer capable of supplying sediment to the fans. A further age of 10.1 ± 0.7 ka dates the reworking of coversand into the early part of the Holocene, immediately post-dating Younger Dryas periglacial structures. A 45-m lake level dates to ∼17.6 ka, when the North Sea Lobe was already in retreat, having moved eastward of the Wykeham Moraine; it stood further east at the Flamborough Moraine by ∼17.3 ka. The highest (70 m) lake level and the occupation of the Wykeham Moraine date to an earlier phase of the North Sea Lobe occupation of the Vale of Pickering.
Item Type: | Articles |
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Additional Information: | This work was supported by the UK NaturalEnvironment Research Council consortium grant BRITICE-CHRONONE/J009768/1. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Fabel, Dr Derek |
Authors: | Evans, D. J.A., Bateman, M. D., Roberts, D. H., Medialdea, A., Hayes, L., Duller, G. A.T., Fabel, D., and Clark, C. D. |
College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
Journal Name: | Journal of Quaternary Science |
Publisher: | 32 |
ISSN: | 0267-8179 |
ISSN (Online): | 1099-1417 |
Published Online: | 16 January 2016 |
Copyright Holders: | Copyright © 2016 The Authors |
First Published: | First published in Journal of Quaternary Science 32(2):295-310 |
Publisher Policy: | Reproduced under a Creative Commons License |
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