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Mudstone? If not, what is it

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A geologist from the local university says it is 2 billion year old mudstone.

asked Jun 30, 2014 by Weasel (58,930 points)

1 Answer

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Hard to tell from just the photo - though it does seem to have interesting layer banding!

answered Jul 1, 2014 by hershel (52,780 points)

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