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ROCK WEATHERING IN DESERTS
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aggradation alluvial fans alluvium angle arid badlands barkhans basins boulders calcrete caprock catchment central Australia channels clay climatic commonly crests crusts Death Valley debris flows debris slopes deflation deposition depressions desert uplands discharge dissection downwind drainage dunefields dunes erosion escarpment example extensive Finke River flood fluvial forms geomorphic geomorphology gilgai gradients grains granite gravel groundwater gullies hamada humid increase indicated Lake Eyre landforms laterite layer limestone longitudinal dunes lower lowlands lunettes Mabbutt mantle margins metres Nahal Yael occur pavements pediment periglacial Photo piedmont piedmont junction plains platform deserts playa floor Pleistocene processes profiles rainfall range regime regions relatively relief result ridges River rock runoff Sahara saline saltation salts sandstone Schumm sectors semiarid shallow shield and platform silcrete Simpson Desert soil South steep stone stony streamfloods surface tablelands tectonic temperature tend topographic transport transverse vegetation velocity wash weathering Western Australia wetter wind action yardangs zone