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Tag Archives: dune

Barchans on Mars

 Review Android Smartphone Barchan Dune in Namibia Image Credit: Wikimedia Commons Sand dunes are basically mobile piles of millions of tiny bits of rock, sculpted by the wind into fantastic shapes. One of the coolest shapes is today’s weekly geology word, barchan. The Encyclopedia Britannica has the following definition: barchan: also spelled Barkhan,  crescent-shaped sand dune produced by […]