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Patterns in shale... Are these geologic fossil records?


CAtoPA

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Personally, I consider it jargon. Not technically correct, but gets the point across without being unwieldy. Sort of like when people talk about their "disc drive" being full even when it's solid state and has no discs or drive. But that's just me.... not a big stickler for precision as long as everybody gets the gist and has a good time. :-)

It cracks me up when the news people say "caught on tape", when we all know it was from a cell phone.

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Discovery consists of seeing what everybody has seen, and thinking what nobody has thought.

Albert Szent-Gyorgyi

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Or 'dial' a phone number... Do people still say that?

I spent a few years contracting for Northern Telecom writing code for telephones switches. A buddy took me to see a working model of a Strowger Switch (or something a bit newer). If you've ever actually used a rotary dial phone, you'll immediately recognize the sounds.

https://m.youtube.com/watch?v=cNNKLuM8yY8

Info: Craig Hyatt, retired software/electrical engineer

Experience: Beginner, fossil hunting less than a year

Location: Eagle Pass, TX USA on the border with Mexico, hot dry desert

Formation: Escondido, Marine, Upper Cretaceous

Materials: Sandstone, Mudstone, Shale, Chert, Chalk

Typical: Thalassinoides, Sphenodiscus, Exogyra, Inoceramus

Reference: http://txfossils.com/Txfossils.html

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The overall picture looks like wave ripple marks. On closer examination, I see small patterned gouges that are telling me more like sedimentary mud flutes.

yes, interesting pattern...longitudinal furrows and ridges?

could CAtoPA add some more pics showing a lateral view of the piece?

ciao

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yes, interesting pattern...longitudinal furrows and ridges?

could CAtoPA add some more pics showing a lateral view of the piece?

ciao

Ciao, Supertramp! I will take more pictures when I get back out to that site... The piece was too heavy to move, being about 5" thick and about 3 feet in diameter, roughly. But I plan to return to that area soon, so I'll let you know!

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