Any ideas?

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edge1255
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Any ideas?

Post by edge1255 » Thu Sep 27, 2018 9:57 am

Found these some time ago. Its sedimentary rock, and the layers can be clearly seen. Erosion has uncovered the harder stone artifacts. Sorry I had no size reference, but they are about 2"-2.5" in diameter. To me they look like leg bones. Any suggestions?
Jon :-/
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Re: Any ideas?

Post by crimsonlake » Thu Sep 27, 2018 1:54 pm

It's difficult to tell from an image, but another possibility is that they are burrowing features wherein mineral bearing fluids selectively flowed through disturbed sediments (a trace fossil, like a "footprint"). Same process would preserve bone fragments as well...

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Re: Any ideas?

Post by edge1255 » Thu Sep 27, 2018 1:58 pm

crimsonlake wrote:
Thu Sep 27, 2018 1:54 pm
It's difficult to tell from an image, but another possibility is that they are burrowing features wherein mineral bearing fluids selectively flowed through disturbed sediments (a trace fossil, like a "footprint"). Same process would preserve bone fragments as well...
Never thought of the burrowing idea... maybe something like a marine worm scavenging through the silt of a seabed... :-/
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Re: Any ideas?

Post by fred » Thu Sep 27, 2018 2:38 pm

edge1255 wrote:
Thu Sep 27, 2018 1:58 pm
crimsonlake wrote:
Thu Sep 27, 2018 1:54 pm
It's difficult to tell from an image, but another possibility is that they are burrowing features wherein mineral bearing fluids selectively flowed through disturbed sediments (a trace fossil, like a "footprint"). Same process would preserve bone fragments as well...
Never thought of the burrowing idea... maybe something like a marine worm scavenging through the silt of a seabed... :-/
That's how flint was created in chalk too. ::g
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Re: Any ideas?

Post by watermouse » Wed Nov 14, 2018 5:17 pm

the stone seems similar to Aztec sandstone like some found in the States and tend to be formed from Jurassic sand dunes or like Entrada Sandstone .for example from the Middle to late Jurassic and formed from mud flaps beaches and dunes that surround an epeiric sea.

its possible its a Thalassinoides and marine related but can't say for...if one was to know where that is.then it may help with identifying better..interesting though. ::g

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Re: Any ideas?

Post by Easylife » Wed Nov 14, 2018 10:11 pm

Looks like a scene from "The Clangers". :D
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Re: Any ideas?

Post by oldartefact » Wed Nov 14, 2018 10:27 pm

Very interesting... looks like that there is alot going on in those layers .. the varves are usually parallel, I am no expert, but I havent seen sedimentary layers quite like this before,
An interesting observation is the depression on the immediate right of the two features, which may well be related to the two "tubes".
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