Potassium-argon dating Britannica - Encyclopedia Britannica Wiens has a Ph D in Physics, with a minor in Geology. Potassium-argon dating, method of determining the time of origin of rocks by measuring the ratio of radioactive argon to radioactive potassium in the rock.
K–Ar dating - Wikipedia His Ph D thesis was on isotope ratios in meteorites, including surface exposure dating. Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in geochronology and archaeology. It is based on measurement of the.
Radiometric dating - Wikipedia He was employed at Caltech's Division of Geological & Planetary Sciences at the time of writing the first edition. Main article Potassium–argon dating. billion years, so this method is applicable to the oldest rocks.
Potassium-Argon Dating He is presently employed in the Space & Atmospheric Sciences Group at the Los Alamos National Laboratory. Chronological Methods 9 - Potassium-Argon Dating. of the radioactive isotope of Potassium, Potassium-40 K-40,decays to the gas Argon as.