105-22 10-14 Deserts, wind

Sahara desert chile argentina not all deserts are

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Unformatted text preview: i er ra Ne va Death Valley da Morocco Atlas Mtns. Sahara Desert Chile Argentina Not all deserts are sandy like the Gran Desierto (Altar desert), Sonora the formation of sand dunes … dunes. Death Valley, California. Sand + Wind Sand Dunes The erosion of surface materials by wind = deflation Erosion Cross-bedded sandstone, Jr Navajo ss, Zion Sand + Wind = Sand Dunes Barchan dunes Transverse dunes Longitudinal dunes Wind direction Barchan Dune or Namibia, SW Africa where? MARS! Sand + Wind = Sand Dunes Barchan dunes Transverse dunes Longitudinal dunes Transverse ripples Sand + Wind = Sand Dunes Barchan dunes Transverse dunes Longitudinal dunes Longitudinal dunes in Saudi Arabia’s “Empty Quarter” Desertification — the advance of Gobi Desert dunes, China Most of our Mojave Desert is rocky, not sandy The Mojave — a rocky desert Desert pavement — a closely packed surface coating of rocks, usual...
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This note was uploaded on 05/11/2013 for the course GEOL 105Lg taught by Professor Davis,platt during the Fall '07 term at USC.

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