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I just completed a summary of what I read in a few abstracts concerning the chemistry and alteration that the Mars rovers observed on the Gusev plains and in the Columbia Hills. It's well established that the alteration in the Hills was of greater intensity than on the plains, but it seems that the alteration process at West Spur is also different from that higher up in the Hills. Still no conclusive theories, though.
Cheers,
Aldo.
[url=http://www.marsgeo.com/]http://www.marsgeo.com/[/url]
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again, this looks great, only read it diagonally, having to study, but I've bookmarked your site for later :up: :up: :up:
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