potassium-argon dating


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potassium-argon dating

the determination of the age of minerals or rock strata based on comparison of the measurement of radiogenic argon-40 with that of potassium-40 and the known relative decay rates.
References in periodicals archive ?
For potassium-argon dating, closed system behavior can be seriously compromised by the presence of water.
As was pointed out in the earlier article on potassium-argon dating, Brent Dalyrmple, a leading researcher in radioactive dating and, incidentally, a very active supporter of evolution in the debates ongoing in the US, has likened the argon that is formed in a mica mineral to that of a bird in a cage.
Potassium-argon dating of the volcanic rocks puts the islands' ages between about 1 million (western islands) and 4 million (eastern islands) years.
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