How old is the Surface?
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by wassock moderator
This is an interesting paper, courtesy of Meg, Enjoy http://www.planetary.brown.edu/pdfs/2614.pdf
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by Kitharode moderator
Excellent. I've got a few geological maps with ApI and Nb and such, but no key to their meaning. This paper really helps with that and even at first glance I can see this is gonna be really useful. Thanks Meg.
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by p.titchin in response to wassock's comment.
Thanks Wassock and Meg
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