The amount of material involved in these estimates is small, but can be used to generate powerful results. Lead atoms created by uranium decay are trapped in the crystal and build up in concentration with time. The nitty gritty on radioisotopic dating Radioisotopic dating is a key tool for studying the timing of both Earth's and life's history. Although it is impossible to predict when a particular unstable atom will decay, the decay rate is predictable for a very large number of atoms. This damage is most concentrated around the parent isotope U and Thexpelling the daughter isotope Pb from its original position in the zircon lattice.
Science and Evolution.