Go Back Argon-Argon Dating and the Chicxulub Impact In the early s there was an intense controversy about the association of the Chicxulub Crater of the Mexican Yucatan Peninsula k-ar dating problems the extinction of the dinosaurs in the period about 65 million years ago. Because that time period, commonly referred to as the K-T boundary, was associated with the extinction of vast numbers of animals in the fossil record, much effort was devoted to dating it with potassium-argon and k-ar dating problems methods of geochronology.
Zircon has sometimes produced puzzles in radiometric dating because its melting temperature is so high that the crystals sometimes survive in hot melted minerals, giving different melt dates than the other minerals surrounding them.
Potassium–argon dating, abbreviated K–Ar dating, is a radiometric dating method used in of the sample. Ar–Ar dating is a similar technique which compares isotopic ratios from the same portion of the sample to avoid this problem. Potassium-Argon dating has the advantage that the argon is an inert gas that does Even though the decay of 40K is somewhat complex with the decay to 40Ca dating was being used to address significant geological problems by the mid. Posts about K-Ar dating written by The Noble Gasbag. Assumption 1 shouldn't cause too many problems for old rocks where the concentration of ⁴⁰Ar* is.