When it comes to determining the age of stuff scientists dig out of the ground whether fossil or artifact there are good dates and bad dates and ugly dates says paleoanthropologist john shea of.
Radiometric dating he question of the ages of the earth and its rock formations and features has fascinated philosophers theologians and scientists for centuries primarily because the answers put our lives in temporal perspective.
earth sciences radiometric dating in 1905 shortly after the discovery of radioactivity the american chemist bertram boltwood suggested that lead is one of the disintegration products of uranium in which case the older a uraniumbearing mineral the greater should be its proportional part of lead analyzing specimens whose relative geologic ages were known boltwood found that the ratio of.
the isochron method many radioactive dating methods are based on minute additions of daughter products to a rock or mineral in which a considerable amount of daughtertype isotopes already exists.
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Our understanding of the shape and pattern of the history of life depends on the accuracy of fossils and dating methods some critics particularly religious fundamentalists argue that neither fossils nor dating can be trusted and that their interpretations are better.
Articles home page creation vs evolution 0 introduction and table of contents the following is an organized presentation on the creation vs evolution controversy.
Isochron dating by chris stassen the article is well illustrated and well written there is an introduction to the generic problem of radiometric dating but this article concentrates on one well established method called the isochron method.