The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia
Linear 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 lumine...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/33381 2024-01-14T10:01:32+01:00 The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia Fitzsimmons, Kathryn Rhodes, Edward Magee, John Barrows, Timothy http://hdl.handle.net/1885/33381 https://doi.org/10.1016/j.quascirev.2007.06.010 https://openresearch-repository.anu.edu.au/bitstream/1885/33381/5/fitzsimmons_et_al_2007QSR.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/33381/7/01_Fitzsimmons_The_timing_of_linear_dune_2007.pdf.jpg unknown Pergamon-Elsevier Ltd 0277-3791 http://hdl.handle.net/1885/33381 doi:10.1016/j.quascirev.2007.06.010 https://openresearch-repository.anu.edu.au/bitstream/1885/33381/5/fitzsimmons_et_al_2007QSR.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/33381/7/01_Fitzsimmons_The_timing_of_linear_dune_2007.pdf.jpg Quaternary Science Reviews Keywords: 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 Journal article ftanucanberra https://doi.org/10.1016/j.quascirev.2007.06.010 2023-12-15T09:36:25Z Linear 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. Article in Journal/Newspaper Antarc* Antarctica Australian National University: ANU Digital Collections Quaternary Science Reviews 26 19-21 2598 2616 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
topic |
Keywords: 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 |
spellingShingle |
Keywords: 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 Fitzsimmons, Kathryn Rhodes, Edward Magee, John Barrows, Timothy The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia |
topic_facet |
Keywords: 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 |
description |
Linear 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. |
format |
Article in Journal/Newspaper |
author |
Fitzsimmons, Kathryn Rhodes, Edward Magee, John Barrows, Timothy |
author_facet |
Fitzsimmons, Kathryn Rhodes, Edward Magee, John Barrows, Timothy |
author_sort |
Fitzsimmons, Kathryn |
title |
The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia |
title_short |
The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia |
title_full |
The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia |
title_fullStr |
The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia |
title_full_unstemmed |
The timing of linear dune activity in the Strzelecki and Tirari Deserts, Australia |
title_sort |
timing of linear dune activity in the strzelecki and tirari deserts, australia |
publisher |
Pergamon-Elsevier Ltd |
url |
http://hdl.handle.net/1885/33381 https://doi.org/10.1016/j.quascirev.2007.06.010 https://openresearch-repository.anu.edu.au/bitstream/1885/33381/5/fitzsimmons_et_al_2007QSR.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/33381/7/01_Fitzsimmons_The_timing_of_linear_dune_2007.pdf.jpg |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Quaternary Science Reviews |
op_relation |
0277-3791 http://hdl.handle.net/1885/33381 doi:10.1016/j.quascirev.2007.06.010 https://openresearch-repository.anu.edu.au/bitstream/1885/33381/5/fitzsimmons_et_al_2007QSR.pdf.jpg https://openresearch-repository.anu.edu.au/bitstream/1885/33381/7/01_Fitzsimmons_The_timing_of_linear_dune_2007.pdf.jpg |
op_doi |
https://doi.org/10.1016/j.quascirev.2007.06.010 |
container_title |
Quaternary Science Reviews |
container_volume |
26 |
container_issue |
19-21 |
container_start_page |
2598 |
op_container_end_page |
2616 |
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1788067299325902848 |