Glaciar León, Chilean Patagonia: late-Holocene chronology and geomorphology

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dc.contributor.author Harrison, Stephan
dc.contributor.author Glasser, Neil F.
dc.contributor.author Winchester, Vanessa
dc.contributor.author Haresign, Eleanor
dc.contributor.author Warren, Charles
dc.contributor.author Duller, Geoffrey Alastair Thomas
dc.contributor.author Bailey, Richard
dc.contributor.author Ivy-Ochs, Susan
dc.contributor.author Jansson, Krister
dc.contributor.author Kubik, Peter
dc.date.accessioned 2009-12-22T15:37:58Z
dc.date.available 2009-12-22T15:37:58Z
dc.date.issued 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 ' The 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 http://hdl.handle.net/2160/3897
dc.identifier.uri http://hol.sagepub.com/cgi/reprint/18/4/643 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 The 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 COSMOGENIC NUCLIDES 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 Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1177/0959683607086771
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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