Cosmogenic nuclide evidence for enhanced sensitivity of an East Antarctic ice stream to change during the last deglaciation

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dc.contributor.authorWhite, DAen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorGore, DBen_AU
dc.date.accessioned2011-02-09T23:02:57Zen_AU
dc.date.available2011-02-09T23:02:57Zen_AU
dc.date.issued2011-01-01en_AU
dc.date.statistics2011-01-01en_AU
dc.description.abstractGlacial sediments from the Prince Charles Mountains, East Antarctica, record late Pleistocene ice thickness variability in the Lambert Glacier–Amery Ice Shelf system, one of the world's largest ice drainages. A former glacial limit, demarcated by minimally weathered deposits, follows a concave longitudinal profile, indicating a zone of strong ice streaming through the northernmost 500 km of the Lambert Graben. In situ 10Be and 26Al exposure ages from these relatively unweathered deposits indicate that the most recent phase of ice lowering occurred between ca. 18 and 8 ka, preceding by as many as 6 k.y. the deglaciation of adjacent coastal regions. Earlier onset of deglaciation in an area of strong ice streaming suggests a heightened sensitivity of the East Antarctic Ice Sheet to climate and sea-level changes following the Last Glacial Maximum than previously recognized. © 2011, Geological Society of Americaen_AU
dc.identifier.citationWhite, D. A., Fink, D., & Gore, D. B. (2011). Cosmogenic nuclide evidence for enhanced sensitivity of an East Antarctic ice stream to change during the last deglaciation. Geology, 39(1), 23-26. doi:10.1130/G31591.1en_AU
dc.identifier.govdoc3197en_AU
dc.identifier.issn0091-7613en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleGeologyen_AU
dc.identifier.pagination23-26en_AU
dc.identifier.urihttp://dx.doi.org/10.1130/G31591.1en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/3004en_AU
dc.identifier.volume39en_AU
dc.language.isoenen_AU
dc.publisherGeological Society of Americaen_AU
dc.subjectAntarcticaen_AU
dc.subjectSensitivityen_AU
dc.subjectIsotopesen_AU
dc.subjectPleistocene epochen_AU
dc.subjectIceen_AU
dc.subjectGlaciersen_AU
dc.titleCosmogenic nuclide evidence for enhanced sensitivity of an East Antarctic ice stream to change during the last deglaciationen_AU
dc.typeJournal Articleen_AU
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