The U-Th-Pb method is one of the most powerful tools for dating geological processes and establishing absolute timelines in Earth’s history. Its unique strength lies in the abundance of U- and Th-rich minerals in crustal rocks and in the decay of three parent isotopes into distinct Pb isotopes, which enables not only precise age determinations but also the evaluation of open-system behavior. This short course introduces participants to the fundamentals of the U-Th-Pb decay chains and dating equations, methods for visualizing data and recognizing system disturbances, and the geological processes that may affect results. It compares the advantages and limitations of the main analytical techniques—ID-TIMS, SIMS, and LA-ICP-MS—while discussing the limits of precision and accuracy. Finally, it considers applications to apatite and calcite dating. Designed for both beginners and experienced users, the course provides the background and practical tools needed to confidently apply the U-Th-Pb method in geoscience research.

OBJECTIVE:
To understand the principles of U-Th-Pb radiometric dating and its applications.

KNOWLEDGE AND SKILLS AT THE END OF THE ACTIVITY: