The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia

dc.contributor.authorFitzsimmons, Kathryn
dc.contributor.authorRhodes, Edward
dc.contributor.authorMagee, John
dc.contributor.authorBarrows, Timothy
dc.date.accessioned2015-12-08T22:25:17Z
dc.date.issued2007
dc.date.updated2015-12-08T09:04:46Z
dc.description.abstractLinear dunes occupy more than one-third of the Australian continent, but the timing of their formation is poorly understood. In this study, we collected 82 samples from 26 sites across the Strzelecki and Tirari Deserts in the driest part of central Australia to provide an optically stimulated luminescence chronology for these dunefields. The dunes preserve up to four stratigraphic horizons, bounded by palaeosols, which represent evidence for multiple periods of reactivation punctuated by episodes of increased environmental stability. Dune activity took place in episodes around 73-66, 35-32, 22-18 and 14-10 ka. Intermittent partial mobilisation persisted at other times throughout the last 75 ka and dune activity appears to have intensified during the late Holocene. Dune construction occurred when sediment was available for aeolian transport; in the Strzelecki and Tirari Deserts, this coincided with cold, arid conditions during Marine Isotope Stage (MIS) 4, late MIS 3 and MIS 2, and the warm, dry climates of the late Pleistocene-Holocene transition period and late Holocene. Localised influxes of sediment on active floodplains and lake floors during the relatively more humid periods of MIS 5 also resulted in dune formation. The timing of widespread dune reactivation coincided with glaciation in southeastern Australia, along with cooler temperatures in the adjacent oceans and Antarctica.
dc.identifier.issn0277-3791
dc.identifier.urihttp://hdl.handle.net/1885/33381
dc.publisherPergamon-Elsevier Ltd
dc.sourceQuaternary Science Reviews
dc.subjectKeywords: Climatology; Environmental impact assessments; Floods; Glacial geology; Sediments; Environmental stability; Lake floors; Optically stimulated luminescence chronology; Palaeosols; Geochronology; dune formation; eolian process; glaciation; Holocene; lumines
dc.titleThe timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia
dc.typeJournal article
local.bibliographicCitation.issue19-221
local.bibliographicCitation.lastpage2616
local.bibliographicCitation.startpage2598
local.contributor.affiliationFitzsimmons, Kathryn, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRhodes, Edward, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMagee, John, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBarrows, Timothy, College of Physical and Mathematical Sciences, ANU
local.contributor.authoremailu7700267@anu.edu.au
local.contributor.authoruidFitzsimmons, Kathryn, u2525549
local.contributor.authoruidRhodes, Edward, u4065999
local.contributor.authoruidMagee, John, u7700267
local.contributor.authoruidBarrows, Timothy, u9116690
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor040303 - Geochronology
local.identifier.absfor040601 - Geomorphology and Regolith and Landscape Evolution
local.identifier.ariespublicationU8610899xPUB101
local.identifier.citationvolume26
local.identifier.doi10.1016/j.quascirev.2007.06.010
local.identifier.scopusID2-s2.0-36248954433
local.identifier.uidSubmittedByU8610899
local.type.statusPublished Version

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