Scourse, J. D. and Chiverrell, R. C. and Smedley, R. K. and Small, D. and Burke, M. J. and Saher, M. and Van Landeghem, K. J. J. and Duller, G. A. T. and Cofaigh, C. Ó and Bateman, M. D. and Benetti, S. and Bradley, S. and Callard, L. and Evans, D. J. A. and Fabel, D. and Jenkins, G. T. H. and McCarron, S. and Medialdea, A. and Moreton, S. and Ou, X. and Praeg, D. and Roberts, D. H. and Roberts, H. M. and Clark, C. D. (2021) Maximum extent and readvance dynamics of the Irish Sea Ice Stream and Irish Sea Glacier since the Last Glacial Maximum. Journal of Quaternary Science, 36 (5). pp. 780-804. ISSN 0267-8179

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Abstract

The BRITICE‐CHRONO Project has generated a suite of recently published radiocarbon ages from deglacial sequences offshore in the Celtic and Irish seas and terrestrial cosmogenic nuclide and optically stimulated luminescence ages from adjacent onshore sites. All published data are integrated here with new geochronological data from Wales in a revised Bayesian analysis that enables reconstruction of ice retreat dynamics across the basin. Patterns and changes in the pace of deglaciation are conditioned more by topographic constraints and internal ice dynamics than by external controls. The data indicate a major but rapid and very short‐lived extensive thin ice advance of the Irish Sea Ice Stream (ISIS) more than 300 km south of St George's Channel to a marine calving margin at the shelf break at 25.5 ka; this may have been preceded by extensive ice accumulation plugging the constriction of St George's Channel. The release event between 25 and 26 ka is interpreted to have stimulated fast ice streaming and diverted ice to the west in the northern Irish Sea into the main axis of the marine ISIS away from terrestrial ice terminating in the English Midlands, a process initiating ice stagnation and the formation of an extensive dead ice landscape in the Midlands. © 2021 The Authors Journal of Quaternary Science Published by John Wiley & Sons, Ltd.

Item Type:	Article
Additional Information:	Cite as: Scourse, J.D., Chiverrell, R.C., Smedley, R.K., Small, D., Burke, M.J., Saher, M., Van Landeghem, K.J.J., Duller, G.A.T., Cofaigh, C.Ó., Bateman, M.D., Benetti, S., Bradley, S., Callard, L., Evans, D.J.A., Fabel, D., Jenkins, G.T.H., McCarron, S., Medialdea, A., Moreton, S., Ou, X., Praeg, D., Roberts, D.H., Roberts, H.M. and Clark, C.D. (2021), Maximum extent and readvance dynamics of the Irish Sea Ice Stream and Irish Sea Glacier since the Last Glacial Maximum. J. Quaternary Sci, 36: 780-804. https://doi.org/10.1002/jqs.3313
Keywords:	deglaciation; geochronology; geomorphology; ice stream; marine geology;
Academic Unit:	Faculty of Social Sciences > Geography Faculty of Social Sciences > Research Institutes > Irish Climate Analysis and Research Units, ICARUS
Item ID:	17665
Identification Number:	https://doi.org/10.1002/jqs.3313
Depositing User:	Dr. Stephen McCarron
Date Deposited:	12 Oct 2023 10:52
Journal or Publication Title:	Journal of Quaternary Science
Publisher:	Wiley on line
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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