Show simple item record Harrison, Stephan Glasser, Neil F. Winchester, Vanessa Haresign, Eleanor Warren, Charles Duller, Geoffrey Alastair Thomas Bailey, Richard Ivy-Ochs, Susan Jansson, Krister Kubik, Peter 2009-12-22T15:37:58Z 2009-12-22T15:37:58Z 2008-06-01
dc.identifier.citation Harrison , S , Glasser , N F , Winchester , V , Haresign , E , Warren , C , Duller , G A T , Bailey , R , Ivy-Ochs , S , Jansson , K & Kubik , P 2008 , ' Glaciar León, Chilean Patagonia: late-Holocene chronology and geomorphology ' Holocene , vol 18 , no. 4 , pp. 643-652 . , 10.1177/0959683607086771 en
dc.identifier.issn 0959-6836
dc.identifier.other PURE: 142631
dc.identifier.other dspace: 2160/3897
dc.identifier.uri en
dc.description Harrison, S., Glasser, N. F., Winchester, V., Haresign, E., Warren, C., Duller, G. A. T., Bailey, R., Ivy-Ochs, S., Jansson, K., Kubik, P. (2008). Glaciar León, Chilean Patagonia: late-Holocene chronology and geomorphology. The Holocene 18, 4, pp. 643-652 Sponsorship: NERC; University of St Andrews; American Alpine Club; British Geomorphological Research Group; Dudley Stamp Memorial Trust; Royal Scottish Geographical Society; Quaternary Research Association; Carnegie Trust for the Universities of Scotland en
dc.description.abstract Glaciar León is a temperate, grounded outlet of the eastern North Patagonian Icefield (NPI). It terminates at an active calving margin in Lago Leones, a 10 km long proglacial lake. We take a multidisciplinary approach to its description and use ASTER imagery and clast sedimentology to describe the geomorphology of the glacier and its associated moraines. We date periods of glacier retreat over the last 2500 years using a combination of lichenometric, dendrochronological, cosmogenic and optically stimulated luminescence techniques and show that the glacier receded from a large terminal moraine complex some 2500 years ago and underwent further significant recession from nineteenth-century moraine limits. The moraine dates indicate varying retreat rates, in conjunction with significant downwasting. The bathymetry of Lago Leones is characterized by distinct ridges interpreted as moraine ridges that dissect the lake into several basins, with water depths reaching 360 m. The fluctuations of Glaciar León appear to have been controlled by the interplay between climatic forcing and calving dynamics. en
dc.format.extent 10 en
dc.language.iso eng
dc.relation.ispartof Holocene en
dc.subject glacier fluctuations en
dc.subject LICHENOMETRY en
dc.subject ICEFIELD en
dc.subject SOLER GLACIER en
dc.subject SINGLE en
dc.subject late Holocene en
dc.subject 'Little ice age' en
dc.subject Chile en
dc.subject QUARTZ en
dc.subject FLUCTUATIONS en
dc.subject calving dynamics en
dc.subject chronology en
dc.subject Patagonia en
dc.subject LATE PLEISTOCENE en
dc.subject LUMINESCENCE en
dc.subject geomorphology en
dc.subject SOUTH-AMERICA en
dc.title Glaciar León, Chilean Patagonia: late-Holocene chronology and geomorphology en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Centre for Glaciology en
dc.description.status Peer reviewed en

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