The palaeoglaciology of the central sector of the British and Irish Ice Sheet: reconciling glacial geomorphology and preliminary ice sheet modelling

Abstract

Article:Evans, D.J.A., Livingstone, S.J., Vieli, A. et al. (1 more author) (2009) The palaeoglaciology of the central sector of the British and Irish Ice Sheet: reconciling glacial geomorphology and preliminary ice sheet modelling. Quaternary Science Reviews, ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. after the LGM; b) the ice sheet had no real steady state and comprised constantly 2 migrating dispersal centres and ice divides; c) subglacial streamlining of flow sets was completed over short phases of fast flow activity, with some flow reversals taking place in less than 300 years.

Ice sheet advance, dynamics, and decay configurations: evidence from west central Scotland

“…Importantly, our history of events for west central Scotland is consistent with the paradigm of a mobile, dynamic BIIS (Bowen et al, 2002;Bradwell et al, 2008;McCabe, 2008;Evans et al, 2009;Greenwood and Clark, 2009b).…”

“…The subsequent development of a substantial ice divide over Arran and the Firth of Clyde with eastward flow across central Scotland by the LGM (Fig. 17B) has similarities with a recent reconstruction for northern England (Evans et al, 2009) in which ice sourced over southwest Scotland and the Lake District is driven eastwards through the Stainmore and Tyne gaps. Importantly, there is no evidence for eastward transport of Arran and Ailsa Craig erratics (Fig.…”

“…Ice was driven eastward towards the Firth of Forth and through the Stainmore and Tyne Gaps (Fig. 17C) (Evans et al, 2009). Ice divides then migrated both eastwards and southwards as a result of enhanced drawdown of ice towards shelf-edge fans on the continental shelf, to the northwest, and into the Irish Sea basin (Fig.17C) (Fig.…”

“…The ice sheet surface now descended from west to east over west central Scotland. On southern fringes of the Southern uplands, ice flow became topographically constrained (Salt and Evans, 2004), extending into the Solway Firth (Evans et al, 2009). …”

“…Boulton and Hagdorn, 2006;Hubbard et al, 2009). The last British and Irish Ice Sheet (BIIS) is now known to have undergone substantial changes in geometry and flow during its evolution (Bowen et al, 2002;Bradwell et al, 2008;Evans et al, 2009;Greenwood and Clark, 2009b).…”