Fossils

Discussion in 'Biology & Genetics' started by Dreamsa, Dec 16, 2001.

  1. Dreamsa Dare to Dream! Registered Senior Member

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    125
    Hi!
    When fossils are exposed to the surface of Earth due to weathering of surface rocks, why and how are they easily destroyed?

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    I wanna know.


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  3. Bobby Lee member Registered Senior Member

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    Fossils are imbedded in Rock lots of times, they are around for thousands of years. A Trilobite for instance!

    Newer fossils will be forthcoming....


    bjl
     
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  5. Teri Curious Registered Senior Member

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    Hi there,

    I think you've answered your own question - due to weathering.
    Slowly the elements will remould the each to whatever it turns out to be.

    PS. Welcome dreamsa and I like your little bouncing avatar!

    Cheers,
    Teri
     
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  7. Dreamsa Dare to Dream! Registered Senior Member

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    Ha! Ha!

    Well, weathering.
    Does weathering occurs very quickly?
    How much time will they stay on the surface before they are destroyed?

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  8. wet1 Wanderer Registered Senior Member

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    First off, fine, quality fossils are rare finds. Those with high amounts of detail or even more rare. There is no "time limit" that you can put on weathering because it depends on the material being weathered, the weather elements themselves, such as how often they occur, how severe they are, ect.
     
  9. Dreamsa Dare to Dream! Registered Senior Member

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    Hi!

    So we just do not know how fast they are destroyed depending on where the fossils are and what the weather condition there, right?

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  10. wet1 Wanderer Registered Senior Member

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    Certain parts of the country experience acid rain. This would speed up any exposed fossils into decaying just that much faster. This is one reason why weathering is so variable. Another is that some fossils, especially those in areas like Florida for example, are of limestone base. Limestone, even hard limestone weathers considerably faster. Sandstone is yet another example of a fast weathering rock.
     
  11. Dreamsa Dare to Dream! Registered Senior Member

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    125
    I also read about in that in the drier land, the exposed fossils are destroyed by animals running over them, is this true?
     
  12. Teri Curious Registered Senior Member

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    Hi Dreamsa

    Fossils can be destroyed by anything - nature, humans, animals.

    Humans and animals don't go out and destroy them on purpose, it's just that sometimes we don't see them and walk or build over the top of them. The weather is constant, it is and always will be on this planet. A drop of water falling on a rock once a day for a few million years will change the shape of that rock just a little, but that's basically how the weather is changing everything around us. A rock is a hard substance. That same drop of water falling once a day on say a plant, will probably change the course of the way the plant grows ever so slightly, just because of that drop of water.

    Maybe you will become a geologist or an archeologist one day, and you'll learn all about time, and weather, and their relationship to our planet.

    The wonders of nature are there for everyone to enjoy.

    Cheers
    Teri
     
  13. Dreamsa Dare to Dream! Registered Senior Member

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    Hi!

    Thank you very much for the answers!

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