Route 4

CONTINENTAL AEOLIAN DUNES (QUATAR)

On the continental sabkha aeolian processes are more evident. Aeolian dunes of quartz sand locally dominate; there are carbonate sands as well, blown in from the coast.

radar image photo of sand dunes of the Namib

Source http://www.soton.ac.uk/~imw/sabkha.htm

Radar image of sand dunes in the Namib desert

Anhydrites that formed earlier under coastal sabkha conditions hydrates to gypsum, or gypsum dehydrates to anhydrite.

Additional calcium sulfate precipitates from inland-derived groundwaters. Halite precipitates in wind deflated areas.

Locality 10

Locality 11

Locality 12

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This page was created by Pamela Williams

Last Modified:18/06/02