Dating on earth
not applicable to samples that supposedly go back 10,000 to 15,000 years. The final example listed in Table 2 is a supposed 34 billion-year Rb-Sr isochron age on diabase of the Pahrump Group from Panamint Valley, California, and is referenced to a book by Faure and Powell ( 50 wo findet man sexanzeigen ). Cook published a result.1. He reasons that the 208Pb could not have come from the decay of 232Th because thorium is absent, and could not be common lead because 204Pb, which is present in all common lead, is absent. Second, there have been sufficient tests to show that during their formation in the crust, igneous and metamorphic rocks nearly always release their entrapped 40Ar, thus resetting the K-Ar clock. It does not work well on sedimentary rocks because these rocks are composed of debris from older rocks. Thus Cooks ( 28 ) proposition and calculations, enthusiastically endorsed by Morris ( 92 ) and Slusher ( 117 are based on data that do not exist and are, in addition, fatally flawed by demonstrably false assumptions.
Dating on earth
In spite of the claims by Cook ( 28, 29 Morris ( 92 Slusher (115, 117 DeYoung ( 37 ) and Rybka ( 110 neither decay rates nor abundance constants are a significant source of error in any of the principal radiometric dating methods. Original data from Wasserburg and others ( 130 ). C14 dates forced a revision down to 11,400 years. Rubidium is a major constituent of very few minerals, but the chemistry of rubidium is similar to that of potassium and sodium, both of which do form many common minerals, and so rubidium occurs as a trace element in most rocks. The castle was built about 800 years ago. Accuracy OF constants Several creationist authors have criticized the reliability of radiometric dating by claiming that some of the decay constants, particularly those for 40K, are not well known ( 28, 29, 92, 117 ).