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Mars Landscape Bears Traces of Icy Past

Posted by eucalyptis 2261 days ago in Miscellaneous from http://dsc.discovery.com

A closer look at the remnants of mid-latitude glaciers on Mars has revealed signs of deep, icy rivers in the recent geologic past, say researchers who have published the discovery in the May issue of the journal Geology. Mars glaciologist James Dickson of Brown University and his colleagues followed the trail of telltale glacial remnants at the edges of Mars' northern lowlands and were surprised to find signs that a glacier once traveled in a direction now uphill, toward a canyon's edge. Unless the glacier somehow defied gravity, the only explanation is that it was once higher than the canyon.

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