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Exposure Ages for Pleistocene Periglacial Deposits in Australia

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dc.contributor.authorBarrows, Timothy
dc.contributor.authorStone, John O
dc.contributor.authorFifield, L Keith
dc.date.accessioned2015-12-13T23:27:40Z
dc.date.issued2004
dc.date.updated2015-12-12T09:51:04Z
dc.description.abstractPleistocene periglacial landforms are widespread in Australia and provide valuable information on past temperatures, but dating the time of their formation has proven difficult. To remedy this, we have explored the use of cosmogenic 36Cl for direct dating of periglacial deposits. We sampled six deposits in four locations in southeastern Australia, ranging from blockstreams and block slopes to former rock glaciers. Eighteen exposure ages reveal a concentration of periglacial activity during the last glacial maximum (LGM) between 16 and 23ka, with a population having a weighted mean age of 21.9±0.5ka. This age is shortly before the time of maximum ice advance during the LGM in southeastern Australia. Exposure dating of block deposits provides a way of extending the chronology of cold climate activity beyond glaciated regions.
dc.identifier.issn0277-3791
dc.identifier.urihttp://hdl.handle.net/1885/93317
dc.publisherPergamon-Elsevier Ltd
dc.sourceQuaternary Science Reviews
dc.subjectKeywords: Chlorine; Climatology; Glaciers; Landforms; Rocks; Periglacial deposits; Rock glaciers; Deposits; chronology; cosmogenic radionuclide; dating method; Last Glacial Maximum; paleoenvironment; periglacial environment; Pleistocene; Australasia; Australia
dc.titleExposure Ages for Pleistocene Periglacial Deposits in Australia
dc.typeJournal article
local.bibliographicCitation.lastpage708
local.bibliographicCitation.startpage697
local.contributor.affiliationBarrows, Timothy, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationStone, John O, University of Washington
local.contributor.affiliationFifield, L Keith, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidBarrows, Timothy, u9116690
local.contributor.authoruidFifield, L Keith, u8100341
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor040605 - Palaeoclimatology
local.identifier.ariespublicationMigratedxPub26737
local.identifier.citationvolume23
local.identifier.doi10.1016/j.quascirev.2003.10.011
local.identifier.scopusID2-s2.0-1242344850
local.type.statusPublished Version

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