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When experts compare the tree-ring dates with the C-14 dates, they find that radiocarbon ages before 1000 BC are really too young—not too old as Cook maintains.

For example, pieces of wood that date at about 6200 BC by tree-ring counts date at only 5400 BC by regular C-14 dating and 3900 BC by Cook's creationist revision of C-14 dating (as we see in the article, "Dating, Relative and Absolute," in the , not too old.

They have their work cut out for them, however, because radiocarbon (C-14) dating is one of the most reliable of all the radiometric dating methods.

There are two ways of dating wood from bristlecone pines: one can count rings or one can radiocarbon-date the wood.

However, in either case, the background beta radiation has to be compensated for, and, in the older objects, the amount of C-14 they have left is less than the margin of error in measuring background radiation. Question: Creationists such as Cook (1966) claim that cosmic radiation is now forming C-14 in the atmosphere about one and one-third times faster than it is decaying.

As Hurley points out: Without rather special developmental work, it is not generally practicable to measure ages in excess of about twenty thousand years, because the radioactivity of the carbon becomes so slight that it is difficult to get an accurate measurement above background radiation. 108) Cosmic rays form beta radiation all the time; this is the radiation that turns N-14 to C-14 in the first place. If we extrapolate backwards in time with the proper equations, we find that the earlier the historical period, the less C-14 the atmosphere had.

ICR creationists claim that this discredits C-14 dating. Answer: It does discredit the C-14 dating of freshwater mussels, but that's about all.

Kieth and Anderson show considerable evidence that the mussels acquired much of their carbon from the limestone of the waters they lived in and from some very old humus as well.

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  1. Carbon-14 has a half-life of 5730 years. Carbon-dating evaluates the ratio of radioactive carbon-14 to stable carbon-12. "More Exponential Word Problems."

  2. Carbon dating is a real-life example of a first-order reaction. This video explains half-life in the context of radioactive decay.

  3. Carbon dating to determine the age of. a radioactive isotope of carbon with a relatively long half-life. Problem 1- Calculate the amount of 14.

  4. Also referred to as carbon dating or carbon-14 dating. The half-life of a. 1984. "Radiocarbon dating some problems and potential.

  5. Isotopic systems that have been exploited for radiometric dating have half-lives. decreases the problem of. of carbon, with a half-life of.

  6. Half-life problems involving carbon-14. and the half life of carbon-14. A common rule of thumb is that a radioactive dating method is good out to about 10 half.

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