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Wind, water, heat, cold and the Earths natural minerals all play their part in shaping our landscape. none more than Australia’s arid regions. A superb example of natures sculpturing & desert landscape is to be found at what is known as the Painted Desert. On the road that links to Cadney Homestead to Oodnadatta some 100 km to the east are the Arckaringa Hills, an ancient landscape that was once laid down |
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The Painted Desert |
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by a vast inland sea. Because rainfall is low and infrequent, protective crusts known as Duricrusts tend to form on reasonably flat surfaces. This Duricrust involves cementation of the original material and results in a hard resistant surface, in this case, silcrete (cemented by silica). As weathering and erosion takes place these areas of Duricrust protect the underlying strata but ‘break away’ on these edges to leave mesas or pedestal rocks. An ancient and richly coloured underlying strata is revealed on what is known as Breakaway Country. |
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E-mail Cadney@ |
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cadney@bigpond.com |
