Whitehouse Et Al., 2012B) and the Alexander Island Has a Mean Annual Air Temperature of C
Quaternary Science Reviews 177 (2017) 189e219 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Ice-dammed lateral lake and epishelf lake insights into Holocene dynamics of Marguerite Trough Ice Stream and George VI Ice Shelf, Alexander Island, Antarctic Peninsula * Bethan J. Davies a, b, , Michael J. Hambrey b, Neil F. Glasser b, Tom Holt b, Angel Rodes c, John L. Smellie d, Jonathan L. Carrivick e, Simon P.E. Blockley a a Centre for Quaternary Research, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK b Institute of Geography and Earth Sciences, Aberystwyth University, Ceredigion, SY23 3DB, Wales, UK c SUERC, Rankine Avenue, East Kilbride, G75 0QF, Scotland, UK d Department of Geology, University of Leicester, Leicester, LE1 7RH, UK e School of Geography and Water@leeds, University of Leeds, Woodhouse Lane, Leeds, West Yorkshire, LS2 9JT, UK article info abstract Article history: We present new data regarding the past dynamics of Marguerite Trough Ice Stream, George VI Ice Shelf Received 5 June 2017 and valley glaciers from Ablation Point Massif on Alexander Island, Antarctic Peninsula. This ice-free Received in revised form oasis preserves a geological record of ice stream lateral moraines, ice-dammed lakes, ice-shelf mo- 1 October 2017 raines and valley glacier moraines, which we dated using cosmogenic nuclide ages. We provide one of Accepted 12 October 2017 the first detailed sediment-landform assemblage descriptions of epishelf lake shorelines. Marguerite Trough Ice Stream imprinted lateral moraines against eastern Alexander Island at 120 m at Ablation Point Massif. During deglaciation, lateral lakes formed in the Ablation and Moutonnee valleys, dammed against Keywords: Holocene the ice stream in George VI Sound.
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