Pleistocene till provenance in east Yorkshire: reconstructing ice flow of the British North Sea Lobe

Busfield, Marie E.; Lee, Jonathan R.; Riding, James B. ORCID: https://orcid.org/0000-0002-5529-8989; Zalasiewicz, Jan; Lee, Sarah V.. 2015 Pleistocene till provenance in east Yorkshire: reconstructing ice flow of the British North Sea Lobe. Proceedings of the Geologists' Association, 126 (1). 86-99. https://doi.org/10.1016/j.pgeola.2014.12.002

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Abstract/Summary

The ice flow path and dynamic behaviour of the British-Irish Ice Sheet has been subject to renewed interest and controversy in recent years. Early studies in eastern England argued for interaction with Fennoscandian ice onshore in Britain, instigating re-examination of the sedimentology and provenance of many Pleistocene till successions. These studies instead supported an exclusively British provenance, and are used to predict southward advance of a broadly coast-parallel North Sea Lobe. Quantitative lithological and palynological analysis of the Pleistocene till succession in Holderness, East Yorkshire, however, remains to be carried out. We examined the lithologically diverse Skipsea Till in order to reconstruct ice flow pathways to the Holderness coast during the Pleistocene, thereby constraining which areas of substrate were subglacially eroded and entrained prior to deposition. The till yields a diverse range of soft, low-durability and uniquely British allochthonous material, including Permian Magnesian Limestone, Carboniferous limestone and coal, and Carboniferous pollen and spore assemblages that would be unlikely to survive polyphase reworking. Ice extended southwards through southern Scotland, incorporating material in north-east England, north-east Yorkshire and the western margin of the North Sea Basin (NSB), supporting a recurrent ice flow pathway for the eastern margin of the British-Irish Ice Sheet during the Mid to Late Pleistocene.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.pgeola.2014.12.002
ISSN:	0016-7878
Additional Keywords:	North Sea Lobe; British-Irish Ice Sheet; Skipsea Till; Pleistocene; Provenance
NORA Subject Terms:	Earth Sciences
Date made live:	11 Feb 2015 15:14 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/509677

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