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dc.contributor.authorWilson, Peter
dc.contributor.authorBallantyne, Colin K.
dc.contributor.authorBenetti, Sara
dc.contributor.authorSmall, David
dc.contributor.authorFabel, Derek
dc.contributor.authorClark, Chris D.
dc.date.accessioned2019-01-15T10:30:05Z
dc.date.available2019-01-15T10:30:05Z
dc.date.issued2019-01-11
dc.identifier.citationWilson , P , Ballantyne , C K , Benetti , S , Small , D , Fabel , D & Clark , C D 2019 , ' Deglaciation chronology of the Donegal Ice Centre, north-west Ireland ' , Journal of Quaternary Science , vol. 34 , no. 1 , pp. 16-28 . https://doi.org/10.1002/jqs.3077en
dc.identifier.issn0267-8179
dc.identifier.otherPURE: 257352324
dc.identifier.otherPURE UUID: d7cf0165-b15c-4a6d-85eb-a67e08ed476b
dc.identifier.otherRIS: urn:01D92E55AD1AAA16C7EF2915410E10B6
dc.identifier.otherScopus: 85058208451
dc.identifier.otherWOS: 000455535800002
dc.identifier.urihttp://hdl.handle.net/10023/16866
dc.descriptionThis work was supported by the UK Natural Environment Research Council consortium grant: BRITICE‐CHRONO NE/J009768/1. The TCN analyses were undertaken at the NERC Cosmogenic Isotope Analysis Facility (allocation 9155/1014).en
dc.description.abstractDuring the Last Glacial Maximum, Donegal in north‐west Ireland functioned as an independent centre of ice dispersal that separated and fed into the Donegal Bay Ice Lobe (sourced in the Irish Midlands) to the south and the Hebrides/Malin Sea Ice Stream to the north. We report geochronological data that demonstrate marked contrasts in the timing and rate of deglaciation in northern and southern Donegal. In northern Donegal, which occupied an inter‐ice‐stream/lobe location, decoupling from the Hebrides/Malin Sea Ice Stream resulted in formation of a marine embayment along the north coast by ∼22–21 ka, and subsequent slow (∼4 ± 1 m a−1) climatically driven inland retreat of the ice margin to mountain source areas by ∼17 ka. By contrast, in southern Donegal, which lay near the axis of the Donegal Bay Ice Lobe, deglaciation was delayed until ∼18 ka following readvance of ice to a moraine in outer Donegal Bay. The ice margin subsequently underwent net retreat, apparently uninterrupted by readvances, at a net rate of ∼ 18 ± 6 m a−1. A mean terrestrial cosmogenic nuclide age of ∼15.0 ka obtained for samples from the foothills of the Blue Stack Mountains in south‐east Donegal indicates that ice persisted in valley heads and cirques at the beginning of the Lateglacial Interstadial, suggesting that these and nearby mountains supported the last remnants of the Irish Ice Sheet before complete deglaciation of Ireland, and that almost all the shrinkage of the ice sheet in this sector occurred under stadial conditions before the onset of interstadial warming at ∼14.7 ka.
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofJournal of Quaternary Scienceen
dc.rightsCopyright © 2018 The Authors. Journal of Quaternary Science Published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en
dc.subjectBritish–Irish Ice Sheeten
dc.subjectDeglaciationen
dc.subjectNorth-west Irelanden
dc.subjectTerrestrial cosmogenic nuclide surface exposure datingen
dc.subjectG Geography (General)en
dc.subjectNDASen
dc.subject.lccG1en
dc.titleDeglaciation chronology of the Donegal Ice Centre, north-west Irelanden
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Geography & Sustainable Developmenten
dc.identifier.doihttps://doi.org/10.1002/jqs.3077
dc.description.statusPeer revieweden


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