How potassium argon dating works
Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old.It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.Am J Sci ; This paper is now considered to be a classic paper.Yet they use biotite in an uncritical manor in other areas where the dates they obtained matched their expectations.
We should also be able to safely make this assumption. When the concentrations of the various K isotopes are measured, the results are always the same. There are some cases where K has been gained or lost; However, the mineral itself has been noticeably altered.The fourth assumption is probably satisfied for most samples.