For 10 points, name this action that, for samples less than 50,000 years old, can be done by measuring the decay of radioactive carbon-14.
One method for performing this action uses a Concordia diagram and is usually performed on zircon. An anomaly seen in the results of another method for doing this was explained by Hessel de Vries; that method of doing this was first developed by Willard Libby. It can be done incrementally by examining varves or ice cores. This action can be done by measuring the ratios of (*) isotopes of rubidium and strontium, potassium and argon, or uranium and lead. In 1988, this action was performed using accelerator mass spectrometry on the Shroud of Turin to disprove its authenticity. For 10 points, name this action that, for samples less than 50,000 years old, can be done by measuring the decay of radioactive carbon-14.
One method for performing this action uses a Concordia diagram and is usually performed on zircon.
dating [accept equivalents like determining the age of something; accept geochronology or equivalents; accept specific forms of dating like "radiocarbon dating"]