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  • stone

    Any one know what this is? 24#


  • #2
    Hi Jason and welcome to the forum.
    I suspect those are natural geological features known as sole-marks, which occur at the interface between two strata in sedimentary rocks where there have been water currents across the sediments prior to lithification. There's a bit more info here:
    http://www.arrowheads.com/forums/wha...nd-print#37497
    And here's a pic posted by 'vtbuck223' on another forum that shows these features (also known as flute casts) nicely:

    I keep six honest serving-men (they taught me all I knew); Their names are What and Why and When and How and Where and Who.

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    • SDhunter
      SDhunter commented
      Editing a comment
      I now see this post is 9 years old. Lol

  • #3
    Well, can say I've never seen one of those before. mapquest driving directions

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