Uranium–lead radiometric dating involves using uranium-235 or uranium-238 to date a substances absolute age. This scheme has been refined to the point that the error margin in dates of rocks can be as low as less than two million years in two-and-a-half billion years.

What two elements are compared in radiometric dating?

Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.

What type of elements are used for dating materials?

Where researchers use carbon-based radiometric dating for over thousands, b usage of rocks is a certain constant rate of half-life. During natural radioactive isotopes that are the presence of the date it was formed.