Sand dunes and swales - the soft country. An undisturbed sand dune will reveal multitude of tracks and burrows of the wildlife t
Sand dunes and swales - the soft country. An undisturbed sand dune will reveal multitude of tracks and burrows of the wildlife that inhabit this country along the Oodnadatta Track, SA. Sand dunes and swales - the soft country. Most dunes are brownish pink or brick red; some are yellow-brown or grey-brown; others near Lake Eyre are much lighter. The lighter-coloured dunes are generally found closer to the sand source. For example, where they have blown in from the flood plains along Eyres Creek and Goyders lagoon, they are white or light yellow. Generally dunes from a long way from the primary source are red to dark red in colour and more stable. The longer the sands remain in the aeolian (windblown) environment, the redder they become as a result of oxidisation and the release of iron oxide from within the small clay fraction in the sands. The lighter the colour sand dunes support less vegetation because of their instability and lack of nutrients.
Size: 4032px × 6048px
Location: South Australia, Australia
Photo credit: © Juergen Freund / Alamy / Afripics
License: Licensed
Model Released: No
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