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Several methods for dating ancient materials have been developed.
Radioactive minerals would be partially through their cycle of half-lives on the very first day.
This factor of initial apparent age would strongly affect our present reading of the radioactive clocks in uranium, thorium, etc.
According to *Van Allen, high-altitude tests revealed that it emits 3000-4000 times as much radiation as the cosmic rays that continually bombard the earth. But we know next to nothing about this belt—what it is, why it is there, or whether it has changed in the past. Even small amounts of variation or change in the Van Allen belt would significantly affect radioactive substances.
"His [Joly’s] suggestion of varying rate of disintegration of uranium at various geological periods would, if correct, set aside all possibilities of age calculation by radioactive methods."—*A. Kovarik, "Calculating the Age of Minerals from Radioactivity Data and Principles," in Bulletin 80 of the National Research Council, June 1931, p. These are atomic particles traveling at speeds close to that of the speed of light.Sometimes, the radioactive chain may begin with an element partway down the decay chain.A somewhat different type of radioactive dating method is called carbon 14-dating or radiocarbon dating., based on the disintegration of potassium into argon and calcium.In this chapter, we shall discuss the strengths and weaknesses of each of these dating methods.
183-221 of Origin of the Universe (Volume One of our three-volume Evolution Disproved Series).