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I_gotta_rock

Okay, I concede early on that this may be abiotic, but I just have this gut feeling that it's not an accidental pattern. I found this on the banks of the Potomac River in Virginia. The geology there is mostly early to mid-Miocene clays with a Pleistocene terrestrial bog iron layer on top of 40 to 80 ft cliffs overlooking the river. All fossil-bearing. This looks like clay, but I'm not positive that it is from the Miocene layers. There is a row of tiny lumps all about the same ship and almost in a contiguous line. One is just a little offset. 5c92c79a0adbe_HeatherSiple-stratmystery001.jpg.42d3063c568299b59033ed6d9ddc2a02.jpg5c92c79a5ce06_HeatherSiple-stratmystery002.jpg.0734f525f848ba6d620d3479e5956dde.jpg5c92c79ab6b8b_HeatherSiple-stratmystery003.jpg.322f0822e4e59fe8e04211f251b3a9b5.jpg

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Tidgy's Dad

Just looks like harder parts of the rock that are more resistant to erosion to me, i'm afraid. 

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Mark Kmiecik
On 3/20/2019 at 8:14 PM, Tidgy's Dad said:

Just looks like harder parts of the rock that are more resistant to erosion to me, i'm afraid. 

Isn't this the definition of a fossil that has weathered from the matrix? Looks like it may be a fragment of something, but I doubt it could identified unless more of the matrix is removed. Or maybe I'm just completely wrong. Flip a coin. This is one of those I would want to examine in person.

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ClearLake
5 hours ago, Mark Kmiecik said:

sn't this the definition of a fossil that has weathered from the matrix?

No, not really. 

 

I’m with  @Tidgy's Dad this just looks like a rock to me. No obvious fossil here. 

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Rockwood
On 3/20/2019 at 7:07 PM, I_gotta_rock said:

All fossil-bearing.

I'm sure that spot will produce something better.

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I_gotta_rock
4 hours ago, Rockwood said:

I'm sure that spot will produce something better.

Oh, it already has. I just love a good mystery.53618328_390133134899149_6819765547530452992_o.thumb.jpg.55a5c0ed7f66e2fc56b452e7953c17b7.jpg5cadea84bd803_Dolphinandwhale.jpg.b1fdad724c1e065db338f41d31370c3e.jpg5cade5ebcfd4a_whaletoe.jpg.43b7a963ae3c1439a52278b534f18af4.jpg

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Rockwood

I think a group this diverse would be best handled as separate posts.

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