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07-May-2014 05:09

U produces a significant number of tracks over geologic time.

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Advantages of fission track dating for Quaternary materials include low contamination and typically small samples needed.If there is no lead in the zircon originally, and if no lead or uranium has been added or subtracted to the zircon since its formation, then the following formula will hold: , in which case the two t values are said to be concordant; whereas if lead and/or uranium has been added or subtracted, then it would require some sort of statistical fluke for the two t values to end up identical.