How old is the sample
Problem
The half life of ^ 40 K is approximately 1.3 billion years, and it decays to ^ 40 Ar which is trapped in igneous rocks as 40 K decays. If we find a sample of granite in which the ratio of ^ 40 Ar/^ 40 ki is 3/1 , then how old is the sample?
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Which is trapped in igneous rocks as 40 K decays. If we find a sample of granite in which the ratio of ^ 40 Ar/^ 40 ki is 3/1 , then how old is the sample?
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