Authors / CoAuthors
Magee, J.W. | Wallace, L. | Gibson, D. | Williams, F. | Spooner, N.
Abstract
The lower Darling Valley contains a complex fill of Cenozoic shallow marine, fluvial, lacustrine and aeolian sediments capped by a number of Quaternary fluvial units. In the Menindee area, a new LiDAR DEM, sonic drilling, shallow hand augering, examination of tractor-dug pits, sediment sample analysis, landform mapping, and river bottom profiling has been combined with OSL dating to provide new insights into Quaternary fluvial landscape evolution. The Quaternary sequence consists of scroll-plain tracts of different ages incised into higher older more featureless floodplain sediments. These are respectively correlated to the Coonambidgal and Shepparton Formations of the Riverine Plain in the eastern Murray Basin but have local stratigraphic differences. The two youngest Coonambidgal Formation scroll-plain phases, which cross just south of Menindee, are the earlier anabranch system (Talyawalka, Tandou and Redbank creeks and the Great Darling Anabranch) and the younger Darling River tract that is now inactive. Scroll-plain tracts older than the anabranch system with indistinct scroll-bar patterns are also evident both upstream and downstream of Menindee.
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nonGeographicDataset
eCat Id
71335
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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- External PublicationAbstract
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- AU-NSW
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2010-01-01T00:00:00
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