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182 Views 1 Reply Last post: Jun 9, 2014 10:12 PM by MikeHardman RSS
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Jun 9, 2014 3:44 PM

Fossil tooth?

Hi i found what look like 2 fossil teeth at a stoney beach in Auchmithie, Scotland. Can anyone shed any more light on them from the pictures i have provided? They are next to a cm ruler for scale.

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    Jun 9, 2014 10:12 PM (in response to dale)
    Re: Fossil tooth?



    They are just pebbles that happen to be made of a mixture of different rocks. Such mixtures can be composed of rounded or angled fragments in a matrix of other rock. That can happen with sedimentary or igneous rocks, and on various scales.

    It can also happen in fault zones - where the rock gets fractured and gaps are left between the pieces which get filled with minerals precipitated from ground water. I say 'ground water', but actually, that can be a hot and pressured 'soup' of dissolved minerals. I am fairly sure your specimens are of this origin - pieces of host rock broken during faulting and later 'glued' back together by what appears to be quartz.



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