This dune-covered Martian scene described by SETI Institutes Lori - TopicsExpress



          

This dune-covered Martian scene described by SETI Institutes Lori Fenton has split topography: the the bottom part is up on a plateau, and the upper part is in a broad valley. The dunes up on the plateau are smaller than the ones in the valley. Why? Probably because there was more mobile dune-building sediment in the valley to begin with: the dunes up high ran out of material and stopped growing, but the ones in the valley kept getting bigger. Learn more here: buff.ly/1tPXA7F
Posted on: Wed, 13 Aug 2014 02:00:01 +0000

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