Rubidium 87 strontium 87 radiometric dating for kids
Consequently, U-Pb dates for rocks and minerals are rarely concordant, so procedures have been devised to overcome that problem. It and U, the next most abundant isotope, are the starting radioisotopes in two decay chains or series figs.
Yet they can supposedly be circumvented somewhat via the isochron technique, because it is claimed to be independent of the starting conditions and sensitive to revealing any contamination, which is still significantly better than any of the model radioisotope age methods for determining the ages of rock formations. Thus it is imperative every aspect of the methodology used in these methods be carefully examined to investigate whether the age results obtained by them are really as accurate and absolute as portrayed in the geological literature.
The half-lives of U and U are very much longer than those of their respective intermediate daughter isotopes.
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