"A lake bed is typically flat, with
very fine-grain sediments. That's not what we're looking at.
If these are lake sediments, then they've been chewed up by impacts
and rocks have been brought in."
Source: Dr. Ray Arvidson of Washington University
in St. Louis, MO, Deputy Principal Investigator for the Mars
Rover's science instruments, a member of the science team gathered
in Pasadena right now having the time of their lives going over the
data coming back from Columbia Memorial Station, Mars.
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