You’re either new to the sport of cycling or you’ve been riding for a few years, learning the ropes on an old aluminum frame that’s one season away from the dumpster.You’ve been watching all the Spring classics, the Giro, the Vuelta, and the Tour taking notes on who’s riding what.Austin has obtained some bad Rb-Sr isochron dates, although there are several serious questions regarding his methodology.John Woodmorappe has examined numerous studies of radiometric dating in the scientific literature and concludes that radiometric dating techniques are invalid.Here is one example of an isochron, based on measurements of basaltic meteorites (in this case the resulting date is 4.4 billion years) [Basaltic1981, pg. Skeptics of old-earth geology make great hay of these examples.For example, creationist writer Henry Morris [Morris2000, pg.
This essay discusses the ICR's Grand Canyon Dating Project, as proposed and executed by the ICR's Steve Austin.
In a related article on geologic ages (Ages), we presented a chart with the various geologic eras and their ages.
In a separate article (Radiometric dating), we sketched in some technical detail how these dates are calculated using radiometric dating techniques.
The slope of the line determines the date, and the closeness of fit is a measure of the statistical reliability of the resulting date.
Technical details on how these dates are calculated are given in Radiometric dating. As with any experimental procedure in any field of science, these measurements are subject to certain "glitches" and "anomalies," as noted in the literature.