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ThePhysicist

I found this a while back, and now I'm wondering if it could be a stromatolite. Though, it could just be some sedimentary formation. It was found in the red river/lake texoma in texas. Any thoughts or insight would be much appreciated, thank you!

 

In the second photo, I sanded a bit of the side to show the layering.

IMG_5764.jpg

IMG_5771.jpg

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I would say yes, looks like a very nice example.  Very similar forms can be found in rocks that are over 3 billion years old.

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Wrangellian

Interesting piece. Those bumps apparently are layered as well, so I vote for 'stromatolite' too. Do yo know what formation it would have come out of? Mostly Cretaceous in that area?

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Wrangellian

Well it's a nice display piece, in any case (pun intended).

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