Computation of TD and Consideration of Imbalanced Emissions of Uranium Disintegration. This Experiment is based on the application of ESR dating values to sea shell fossils and coral. The TD depends on an initial intake of ²²⁶Ra and from this, values can be calculated and graphed and a hypothesis on the TD and continuous absorption of uranium in the fossil bone can be determined. The result is an ESR era value which is able to withstand a close check by other dating measurement methods. Further, ESR dating allows the establishment of a dating method for the fourth century, thus covering 10³ - 10⁶ years.