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Coastal plain formation

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  • Coastal plain formation

    I may have posted this before but it is interesting. I used to go to a ditch where you could see this and would pick up sand dollars 120 miles inland.
    Outer layer of clay not cemented together with silica to form chert yet Some more of outer layer of clay with shells in it. The silica bonding agent that bonds all material together to make the chert.
    Last edited by tomclark; 11-27-2018, 12:19 PM.

  • #2
    Great pics with info!
    Professor Shellman


    • #3
      Now this is not saying much, but I found tons of oyster shells in that camp in Georgia. I know that the Native Americans put them there though.
      "The education of a man is never completed until he dies." Robert E. Lee


      • willjo
        willjo commented
        Editing a comment
        I am sure what you were seeing was shell midden, That is the only way bones will be preserved in our acidic soil. If it was not in a field where they were plowed up I would be careful in areas like that.
        Last edited by willjo; 11-27-2018, 01:49 PM.