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Fossil and rock identification

  1. Sep 21, 2012 #1

    Evo

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    A number of people have said they are interested in this topic.

    Please posts any pictures, information or questions about rocks or fossils here.

    I'll start off with some odd formations in rock here from the Pennsylvanian period (318.1 to 299.0 mya).

    They appear to be strips of wood, but why do they always appear as strips, no depth? I can't find anything online. I'm dating them by the fossils found in the rock with them.
     

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    Last edited: Sep 22, 2012
  2. jcsd
  3. Sep 21, 2012 #2

    Evo

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    Sorry, I need to upload these to a webhosting site and resize them.
     
  4. Sep 22, 2012 #3

    Evo

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    Ok, more.

    This is a block of wood in stone from the same era as above.
     

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    Last edited: Sep 22, 2012
  5. Sep 22, 2012 #4

    Evo

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    Small fossils, including what appears to be a fern leaf I found in an ancient river bed.

    attachment.php?attachmentid=51090&d=1348292684.jpg
     

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    Last edited: Sep 22, 2012
  6. Sep 22, 2012 #5

    DrDu

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    Interesting thread!
    So that is from the period when the variscean orogenesis took place?
     
  7. Sep 22, 2012 #6

    Evo

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    Yes, in Kansas , we had many periods at and below sea level, and we were below the equator at the time.
     
  8. Sep 22, 2012 #7
    Just a note, I know pretty little about fossils, but I believe it is standard practice to put a "scale bar" in to pictures. Rocks can be notoriously 'self-similar', meaning that it can be very difficult at times to know from pictures whether you are looking at an angular pebble, or an angular mountain top! That is, unless of course, there is a sense of scale. A simple coin, or other well known object usually suffices for fossils.
     
  9. Sep 22, 2012 #8

    Evo

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    HEY! *I* know how big they are!

    Good idea. Ok, so I just got back from risking my life hanging off the edge of a cliff while holding a camera just so I could place a nickel next to the odd wood-like strips. Ok, I wasn't hanging, but I did have to lean in an awkward position on the boulder and it IS on the edge of an overhang.

    attachment.php?attachmentid=51108&d=1348334740.jpg
     

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    Last edited: Sep 22, 2012
  10. Sep 22, 2012 #9

    Evo

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    These "strips" are everywhere, what are they?
     
  11. Sep 22, 2012 #10

    turbo

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    Most of the fossils in this area contain simple bivalves from when this place was under sea-water, however I still have my anti-gravity fossil rock from the Alpha Centauri system.

    floatingfossil_comt.jpg
     
  12. Sep 22, 2012 #11
    *Much* better. :smile:

    I still don't know what they are though :redface:
     
    Last edited by a moderator: Sep 22, 2012
  13. Sep 22, 2012 #12

    Evo

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    This one is a real shame, what a nice brachiopod specimen it would have been.
     

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  14. Sep 22, 2012 #13

    Evo

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    I love your "anti-grav" rock!
     
  15. Sep 22, 2012 #14
    Do you think they look like these Calamites?
     
  16. Sep 22, 2012 #15

    Evo

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    Some rocks.

    attachment.php?attachmentid=51113&d=1348348723.jpg

    attachment.php?attachmentid=51115&d=1348349649.jpg
     

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    Last edited: Sep 22, 2012
  17. Sep 22, 2012 #16

    Evo

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    That's it!! Thank you!!
     
  18. Sep 22, 2012 #17

    Evo

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    This is what I call "swimming yams". Any guesses?
     

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  19. Sep 22, 2012 #18
    That's exciting! You gave a lot of good information to help track it down. Any more info on the swimming yams?
     
  20. Sep 22, 2012 #19

    Evo

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    Notice the empty indentations? That's where yams fell out.

    Normally, the fossils are the usual hard white substance. But I have found a large number of rocks recently where the fossils are of a soft, crumbly orange substance. These are all from this area, both the white and the orange. I'm wondering what the orange yam like fossils could be.

    Here's an orange fossil of possibly a crinoid?
     

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  21. Sep 22, 2012 #20

    Evo

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    Can anyone identify this type of rock and what caused the pits?
     

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