On the Reliability of the Re/Os Chronometer

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Abstract
Plausible astrophysical conditions may have substantially increased the rate of 187Re-decay, thereby invalidating the Re/Os nuclear chronometer. Moreover, if one assumes that solar system matter has not been exposed to such conditions, then discrepancies between the obtained age of the nuclei and presently accepted Hubble ages appear to exist. These discrepancies prevail with certainty if the Os/Re abundance ratio resulting from empirical abundance systematics is accepted instead of the somewhat lower ratio measured for meteorites.

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