Talkorigins radiometric dating

The creationist author J. Radiometric dating has simply made the estimates more precise, and extended it into rocks barren of fossils and other stratigraphic tools. Lead, however, is a volatile element, and so lead loss is commonly a problem. It's difficult to assess Gill's own example as if it were realistic, because his values are not real isotope measurements and are just pulled out of thin air. Slusher and Morris 92 advanced this argument in an attempt to show that the K-Ar method is unreliable, but the argument is a red herring. Measurements of the decay rate of 40 K in different substances under various conditions indicate that variations in the chemical and physical environment have no detectable effect on its e. That's the basis for the "direct counting experiments" from which half-lives are calculated.

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Note that the mere existence of these assumptions do not render the simpler dating methods entirely useless.

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Index to Creationist Claims

The dikes cutting the Precambrian basement gave K-Ar ages ranging from to million years Woodmorappe erroneously lists this higher age as million yearswhereas those cutting the Mesozoic sedimentary rocks gave K-Ar ages of from to million years. Encyclopaedia Britannica 10, p. A Geologic Time Scale, edition. Eberth and Braman described the vertebrate paleontology and sedimentology of the Judith River Formation, a dinosaur-bearing unit that occurs stratigraphically below the Baculites reesidei zone the Judith River Formation is below the Bearpaw Formation. Each technique works only under a particular set of geologic conditions and occasionally a method is inadvertently misapplied. Gill's theoretical treatment concentrates solely on mathematical behavior, while ignoring the underlying chemistry.

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