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South Texas Upper Cretaceous Rings


CraigHyatt

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These are from Eagle Pass, TX. This layer is Upper Cretaceous. These look like weathered iron concretions, but for two things: (1) some of them have an ammonite curve to them and (2) some have a series of equidistant radial bumps. I thought it was likely they were concretions, so I just marked them in GPS and left them there. Do you think they are worth more investigation?

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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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Did you lick 'em? :P

No. They had been on the ground more than 5 seconds. ;-)

Edit: But I saw one of your colleagues out collecting today. He was singing "Rollin', rollin', rollin'. Keep those dookies rollin'. Rollin', rollin', rollin'. Rawhiiiiiiiiiide! That's how we roll down here in Texas.

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Edited by CraigHyatt

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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It looks like ammonites were part of that equation. I'd track that layer to see if you find further ammonite evidence.

You're havin' too much fun, Craig. :P

The human mind has the ability to believe anything is true.  -  JJ

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No. They had been on the ground more than 5 seconds. ;-)

Edit: But I saw one of your colleagues out collecting today. He was singing "Rollin', rollin', rollin'. Keep those dookies rollin'. Rollin', rollin', rollin'. Rawhiiiiiiiiiide! That's how we roll down here in Texas.

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:hearty-laugh:

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No. They had been on the ground more than 5 seconds. ;-)

Edit: But I saw one of your colleagues out collecting today. He was singing "Rollin', rollin', rollin'. Keep those dookies rollin'. Rollin', rollin', rollin'. Rawhiiiiiiiiiide! That's how we roll down here in Texas.

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:shake head: I didn't know any texans yet (ecxept JR in "Dallas"), but now that i know how you roll down here i know tonight i'll go to bed with more knowledge. Rawhiiiiiiiiiide ! Row down Craig yeehaaa !

It looks like ammonites were part of that equation. I'd track that layer to see if you find further ammonite evidence.

You're havin' too much fun, Craig. :P

I agree with ammonite.

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"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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:shake head: I didn't know any texans yet (ecxept JR in "Dallas"),

I was in France in the 80's and I was very surprised that the people there liked to watch "Dallas" and the show "Happy Days". How embarrassing that people of Europe might think that is who we are. :blush:

By the way, Fonzie with a French accent doesn't sound quite right. :blink:

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You have too many interesting finds! :D Gonna ask the obvious, have you turned one over to see the other side or is it "cemented" into the matrix? Apply hammer and chisel tools and bring them home for a better look see in a calm environment with a cold beverage at hand. Those really whisper ammonite. Seeing if there is any shell remaining on the other side would be the clincher.

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You have too many interesting finds! :D Gonna ask the obvious, have you turned one over to see the other side or is it "cemented" into the matrix? Apply hammer and chisel tools and bring them home for a better look see in a calm environment with a cold beverage at hand. Those really whisper ammonite. Seeing if there is any shell remaining on the other side would be the clincher.

I went back out this morning and checked. Sure enough, they are ammonites. I pried a couple off and could see the shell material. But they are badly eroded and not worth collecting.

Interesting to find a pile of them in one place.

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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I was in France in the 80's and I was very surprised that the people there liked to watch "Dallas" and the show "Happy Days". How embarrassing that people of Europe might think that is who we are. :blush:

By the way, Fonzie with a French accent doesn't sound quite right. :blink:

I hated "Dallas" but i liked "Happy days". I agree that Fonzie with a French accent sounds weird. B) But it's far less dangerous for our ears than hearing our presidents trying to speak english. :P

theme-celtique.png.bbc4d5765974b5daba0607d157eecfed.png.7c09081f292875c94595c562a862958c.png

"On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry)

"We only well see with the heart, the essential is invisible for the eyes."

 

In memory of Doren

photo-thumb-12286.jpg.878620deab804c0e4e53f3eab4625b4c.jpg

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If you could follow that layer back into the bank with a prybar you might find better preservation. (just noticed that JohnJ said the same thing....)

Edited by Plax
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If you could follow that layer back into the bank with a prybar you might find better preservation. (just noticed that JohnJ said the same thing....)

Looking at it now. This is a construction site (shoulda mentioned that) and the specimens are sitting on a couple of sandstone slabs. These slabs are scattered here and there on this site. Anyway, I'll poke around nearby and see what turns up.

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Edited by CraigHyatt

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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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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