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Coiled lava flows on Mars discovered by ASU grad student

ASU is reporting that "High-resolution photos (taken by a UA camera) of lava flows on Mars reveal coiling spiral patterns that resemble snail or nautilus shells. Such patterns have been found in a few locations on Earth, but never before on Mars. The discovery, made by Arizona State University graduate student Andrew Ryan, is announced in a paper published April 27, 2012, in the scientific journal Science.
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