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Global cooling initiated stony deserts in central Australia 2-4 Ma, dated by cosmogenic 21 Ne- 10 Be

Fujioka, Toshiyuki; Chappell, John; Honda, Masahiko; Yatsevich, Igor; Fifield, L Keith; Fabel, Frederick

Description

Stony deserts are durable indicators of aridity but until now have not been directly dated. Using 21Ne and 10Be produced in surface rocks by cosmic rays, we show that Australian stony deserts formed 2-4 Ma, at the time when global cooling initiated the Quaternary ice ages and intensified aridity-induced major landscape changes in central Australia. This is the first direct determination of stony desert ages, using a new method for determining cosmogenic 21Ne in the presence of various neon...[Show more]

dc.contributor.authorFujioka, Toshiyuki
dc.contributor.authorChappell, John
dc.contributor.authorHonda, Masahiko
dc.contributor.authorYatsevich, Igor
dc.contributor.authorFifield, L Keith
dc.contributor.authorFabel, Frederick
dc.date.accessioned2015-12-13T22:56:15Z
dc.identifier.issn0091-7613
dc.identifier.urihttp://hdl.handle.net/1885/82735
dc.description.abstractStony deserts are durable indicators of aridity but until now have not been directly dated. Using 21Ne and 10Be produced in surface rocks by cosmic rays, we show that Australian stony deserts formed 2-4 Ma, at the time when global cooling initiated the Quaternary ice ages and intensified aridity-induced major landscape changes in central Australia. This is the first direct determination of stony desert ages, using a new method for determining cosmogenic 21Ne in the presence of various neon components from other sources.
dc.publisherGeological Society of America Inc
dc.sourceGeology
dc.subjectKeywords: Arid regions; Beryllium; Cosmic rays; Global warming; Ice; Landforms; Neon; Rocks; Exposure age; Late Cenozoic; Silcrete; Stony deserts; Geochronology; Cenozoic; cosmogenic radionuclide; dating method; silcrete; Australasia; Australia Cosmogenic Ne/Be; Exposure age; Late Cenozoic; Silcrete; Stony deserts
dc.titleGlobal cooling initiated stony deserts in central Australia 2-4 Ma, dated by cosmogenic 21 Ne- 10 Be
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume33
dc.date.issued2005
local.identifier.absfor040601 - Geomorphology and Regolith and Landscape Evolution
local.identifier.ariespublicationMigratedxPub10944
local.type.statusPublished Version
local.contributor.affiliationFujioka, Toshiyuki, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationChappell, John, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationHonda, Masahiko, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationYatsevich, Igor, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationFifield, L Keith, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationFabel, Frederick, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue12
local.bibliographicCitation.startpage993
local.bibliographicCitation.lastpage996
local.identifier.doi10.1130/G21746.1
dc.date.updated2015-12-11T11:14:48Z
local.identifier.scopusID2-s2.0-29244465526
CollectionsANU Research Publications

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