The attraction of the method lies in the fact that one of the daughter elements is argon which is an inert gas. Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in Ar accumulated to the amount of K remaining. The long half -life of K allows the method to be used to calculate the absolute age of samples. Potassium-argon dating is a method for estimating the age of volcanic rocks by measuring the ratio of potassium to argon present.
Potassium 40 K is a radioactive isotope of potassium which has a very long half-life of 1. Potassium is especially important in potassium–argon (K–Ar) dating. Argon is a gas that does not ordinarily. Potassium-Argon Dating Potassium-Argon dating is the only viable technique for dating very old archaeological materials.
Potassium—argon datingabbreviated K—Ar datingis a radiometric dating method used in geochronology and archaeology. It is based on the fact that some of the radioactive isotope of Potassium, Potassium (K),decays to the gas Argon as Argon (Ar). The potassium-argon K-Ar isotopic dating method is especially useful for determining the age of lavas.
Potassium-Argon dating has the advantage that the argon is an inert gas that does not react chemically and would not be expected to be included in the solidification of a rock, so any found inside a rock is very likely the result of radioactive decay of potassium. Potassium occurs in two stable isotopes (41K and 39K) and one radioactive isotope (40K). Potassium decays with a half-life of million. If you're seeing this message, it means we're having trouble loading external resources on our website.
Potassium-Argon dating has the advantage that the argon is an inert gas that The radioactive potassium decays by two modes, by beta decay to 40Ca and .
Potassium-argon dating is a method for estimating the age of volcanic rocks by measuring the ratio of potassium to argon present.
potassium–argon dating* A dating technique  for certain rocks that depends on the decay of the radioisotope potassium–40 to argon–40, a process with a.
One of the most widely used dating methods is the potassium-argon He assumes that any argon that he measures in his rock sample.