Why is it that Potassium Argon and Carbon …

Jun 09, 2008 · What is the difference between potassium argon dating and ..
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Carbon and Potassium Argon Dating essays

The conventional 40K/40Ar dating method depends on the assumption that the rocks contained no argon at the time of formation and that all the subsequent radiogenic argon (i.e., 40Ar) was quantitatively retained.

All three explanations offered as alternatives to the argon loss models invalidate using the K-Ar system as conventional geochronology would assume.
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Learn About Potassium-Argon Dating …

If the present data are representative, argon of slightly anomalous composition can be expected in approximately one out of three volcanic rocks."

The fundamental dating assumption ('no radiogenic argon was present when the rock formed ') is questioned by these data.
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The "argon inheritance model" and "argon mixing model" simply propose that argon is positively correlated with potassium from its magma source or produced by a mixing process, and that the linear relationship on a plot of 40Ar versus 40K is an artifact of the magma, not produced by radioisotope decay within these rocks.

but dating with the potassium argon method gives dates of 160,000 to 43 million years.
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