Radiometric dating of sedimentary rocks - Radiometric Dating | Answers in Genesis


Radiometric clocks are "set" when each rock forms. "Forms" means the moment an igneous rock solidifies from magma, a sedimentary rock layer is deposited, or a rock heated by metamorphism cools off. It's this resetting process that gives us the ability to date rocks that formed at different times in earth history.

If there were such a pair of isotopes, radiometric dating would be very simple. We could be sure that a mineral containing parentium originally had no daughterium. If the mineral contained 1 part per million Parentium-123 and 3 parts per million Daughterium-123, we could be sure all the Daughterium-123 was originally Parentium-123. In other words there was originally 4 parts per million Parentium-123 and 0 parts per million Daughterium-123. Since there is now only 1/4 of the original amount of Parentium-123, we know that two half-lives of  Parentium-123 have elapsed.

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Radiometric dating of sedimentary rocks

Radiometric dating of sedimentary rocks