Why Do Pennsylvanian Rock Formations Appear as Strips?

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SUMMARY

The discussion centers on the peculiar strip-like formations found in Pennsylvanian rock layers, dating from 318.1 to 299.0 million years ago. Participants share observations of these formations, which resemble strips of wood, and speculate on their origins, including comparisons to Calamites and discussions on fossil identification. The conversation also touches on the presence of unusual orange fossils and tafoni weathering patterns in local rocks. Overall, the forum serves as a collaborative space for enthusiasts to share insights and seek identification of geological specimens.

PREREQUISITES
  • Understanding of Pennsylvanian geology and fossil dating
  • Knowledge of fossil types, particularly Calamites and brachiopods
  • Familiarity with geological weathering processes, specifically tafoni weathering
  • Basic photography skills for documenting geological specimens
NEXT STEPS
  • Research the geological significance of the Pennsylvanian period
  • Learn about the identification and characteristics of Calamites fossils
  • Investigate tafoni weathering and its implications in geology
  • Explore techniques for photographing fossils with scale for accurate identification
USEFUL FOR

Geology enthusiasts, fossil collectors, and students studying sedimentary rock formations and fossil identification will benefit from this discussion.

  • #61
I'd say definitely a leaf.
 
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  • #62
Evo said:
I'd say definitely a leaf.
Thank you.

I have some large petrified bones that came out of the side of the Kansas River bank. I believe they are from a bison; back bones, ribs, and thigh. I need to see if I can find them.
 
  • #63
Ms Music said:
Lucky!

I have 4 days off work, (Thurs - Sun) so I will either a/ forget this thread completely, or b/ remember and post some pictures. Is it okay to post pictures of collections in this thread even though it is called "fossil and rock IDENTIFICATION"?

Obviously the answer was a/. Forgot this thread completely.

Here is my arrow head. I had leaned down to pick up a flake that I had spotted, then noticed a piece of glass sticking edgewise out of the dirt. I decided it was best to remove the glass and throw it away in a garbage can, so I flicked it out with my fingernail and instead found it to be THIS:

407661822.jpg


Yes, it is clear. :biggrin:
 
  • #64
Ms Music said:
Obviously the answer was a/. Forgot this thread completely.

Here is my arrow head. I had leaned down to pick up a flake that I had spotted, then noticed a piece of glass sticking edgewise out of the dirt. I decided it was best to remove the glass and throw it away in a garbage can, so I flicked it out with my fingernail and instead found it to be THIS:

407661822.jpg


Yes, it is clear. :biggrin:
Oh wow!

The weather is getting cooler and that mountain of fossil rock is calling me. There's a little road that they put a gate across and a "no trespassing' sign, but there's no fence on either side of the gate, so I assume it's ok to just walk into the field where they're bulldozing the rocks into a mountain before they haul it away. I have no intention of going through the gate, that would be wrong. :smile: I just know there are some awesome fossils in those rocks.
 

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