How reliable is potassium argon dating

6854933580_2c8b688306_z

For example, a method based on a parent isotope with a very long half-life, such as C method can only be used to determine the ages of certain types of young organic material and is useless on old granites.Some methods work only on closed systems, whereas others work on open systems.he question of the ages of the Earth and its rock formations and features has fascinated philosophers, theologians, and scientists for centuries, primarily because the answers put our lives in temporal perspective.

how reliable is potassium argon dating-60how reliable is potassium argon dating-36

It does not work well on sedimentary rocks because these rocks are composed of debris from older rocks.My purpose here is not to review and discuss all of the dating methods in use.Instead, I describe briefly only the three principal methods. These are the three methods most commonly used by scientists to determine the ages of rocks because they have the broadest range of applicability and are highly reliable when properly used.By the early 1960s, most of the major radiometric dating techniques now in use had been tested and their general limitations were known.No technique, of course, is ever completely perfected and refinement continues to this day, but for more than two decades radiometric dating methods have been used to measure reliably the ages of rocks, the Earth, meteorites, and, since 1969, the Moon.Sometimes these decay schemes are used individually to determine an age (e.g., Rb-Sr) and sometimes in combinations (e.g., U-Th-Pb).

You must have an account to comment. Please register or login here!