Petrochronology is a rapidly expanding discipline of geochronology aimed at developing analytical protocols and philosophies to better link petrologic and microtextural processes within a rock to geochronometers. This seminar is aimed at diving into the wide array of chronometers available to geoscientists, their utility and limitations, and how to treat each chronometer in a way that preserves the microstructural and petrologic significance. Each week we will dive into another chronometer, start with discussing instrumentation, sensitivity, etc., and then move to petrologic significance, and what kind of information we can expect to attain from each chronometer phase. Theoretrical lessons will be supported through the reduction of real datasets each week.