Rocks radiometric dating

Posted by / 26-Aug-2017 14:59

Rocks radiometric dating

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If even a small percentage of the limestone deposits were still in the form of living marine organisms at the time of the Flood, then the small amount of carbon-14 would have mixed with a much larger carbon-12 reservoir, thus resulting in a drastically reduced ratio.A rock sample from Nigeria was dated at 95 million years by the potassium-argon method, 750 million years by the uranium-helium method, and less than 30 million years by the fission-track method.If the clock is not set to zero when a deposit forms, then there can be no starting point from which to calculate the age of a deposit.Many examples from literature show that the zero-reset assumption is not always valid.Volcanic ejecta of Mount Rangitoto (Auckland, New Zealand) was found to have a potassium-40 age of 485,000 years, yet trees buried within the volcanic material were dated with the carbon-14 method to be less than 300 years old.

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Elements can be transported into a sample or leach out of a sample.