History of Australian aridity: chronology in the evolution of arid landscapes

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dc.contributor.authorFujioka, Ten_AU
dc.contributor.authorChappell, Jen_AU
dc.date.accessioned2020-04-30T04:39:34Zen_AU
dc.date.available2020-04-30T04:39:34Zen_AU
dc.date.issued2010-01-01en_AU
dc.date.statistics2020-04-29en_AU
dc.description.abstractAustralian climate and vegetation, known from marine and lacustrine sediments and fossils, varied dramatically throughout the Cenozoic Era, with several warm reversals superimposed on overall drying and cooling. A suite of landforms, including stony deserts, dunefields and playa lakes, formed in response to the advancing aridity but their age generally remained uncertain until fairly recently, owing to a lack of suitable dating methods. Within the last 5 years, the chronology of Late Quaternary fluctuations of lakes, dunes and dust-mantles has been established by luminescence dating methods, and mid-Pleistocene onset of playa conditions in a few closed basins has been estimated using palaeomagnetic reversal chronology. Only recently has it been shown, by cosmogenic isotope dating, that major tracts of arid landforms including the Simpson Desert dunefield, and stony deserts of the Lake Eyre Basin, were formed in early Pleistocene and late Pliocene times, respectively. These landscapes represent a stepwise response to progressive climatic drying and, speculatively, were accompanied by biological adaptations. Recent molecular DNA studies indicate that Australia's arid-adapted species evolved from mesic-adapted ancestors during the Pliocene or earlier, but whether speciation rapidly accompanied the development of stony deserts and other arid geomorphological provinces awaits further studies of arid landscape chronology. © The Geological Society of London 2010en_AU
dc.identifier.booktitleAustralian Landscapesen_AU
dc.identifier.citationFujioka, T., Chappell, J. (2010). History of Australian aridity: chronology in the evolution of arid landscapes. In Bishop. P., & Pillans. B. (eds). Geological Society, London, Special Publications, 346, 121-139. doi:10.1144/SP346.8en_AU
dc.identifier.editorsBishop. P., & Pillansen_AU
dc.identifier.govdoc9441en_AU
dc.identifier.isbn9781862393141en_AU
dc.identifier.pagination121-139en_AU
dc.identifier.placeofpublicationMcLean, VAen_AU
dc.identifier.urihttps://doi.org/10.1144/SP346.8en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9380en_AU
dc.identifier.volume346en_AU
dc.language.isoenen_AU
dc.publisherGeological Society of Londonen_AU
dc.relation.ispartofseriesGeological Society Special Publication;No. 346en_AU
dc.subjectArid landsen_AU
dc.subjectClimatic changeen_AU
dc.subjectSedimentsen_AU
dc.subjectAustraliaen_AU
dc.subjectGeomorphologyen_AU
dc.subjectAge estimationen_AU
dc.subjectFossilsen_AU
dc.subjectLakesen_AU
dc.titleHistory of Australian aridity: chronology in the evolution of arid landscapesen_AU
dc.typeBook chapteren_AU
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