K ar dating
The conventional K-Ar 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., Ar that has accumulated.The minerals that are best suited for dating include biotite, muscovite, and plutonic/high grade metamorphic hornblende, and volcanic feldspar; whole rock samples from volcanic flows and shallow instrusives can also be dated if they are unaltered (Faure, 1986).In "The Carbon Dating Game," we covered flaws, assumptions, and cherry-picking in dating methods that are said to be used for up to 50,000 years, which many evolutionists still use to say the dates of the Bible incorrect.In this article, we will be going over potassium-argon dating (K-Ar) to explain the flaws, assumptions, and cherry-picking in dating methods that are said to be used in dating billions of years, and according to most evolutionists, "proof" of an old-earth.For example, if Ar dating method can overcome these limitations of conventional K-Ar dating, and has the added advantage that potassium and argon are determined on the same sample and that only measurements of the isotopic ratios of argon are required.The method is suitable for use with small and precious samples, such as extraterrestrial materials.
That means, in 1.3 billion years, half of a potassium sample with decay to argon gas.
Potassium can be mobilized into or out of a rock or mineral through alteration processes.
Due to the relatively heavy atomic weight of potassium, insignificant fractionation of the different potassium isotopes occurs.
Susie Welch, recently retired outreach coordinator at the New Mexico Bureau of Geology, was recognized by Governor Susana Martinez for outstanding accomplishments and invaluable contributions to the state of New Mexico.
Congratulations to Susie on the well-deserved citation!