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    Accuracy of fossil dating methods Tchat irc xxx

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    Index fossils are fossils that are known to only occur within a very specific age range.A submethod within biostratigraphy is faunal association: Sometimes researchers can determine a rough age for a fossil based on established ages of other fauna from the same layer — especially microfauna, which evolve faster, creating shorter spans in the fossil record for each species.by Tas Walker A geologist works out the relative age of a rock by carefully studying where the rock is found in the field.In a separate article (Radiometric dating), we sketched in some technical detail how these dates are calculated using radiometric dating techniques.As we pointed out in these two articles, radiometric dates are based on known rates of radioactivity, a phenomenon that is rooted in fundamental laws of physics and follows simple mathematical formulas.

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