There are 37 lectures, major headings are geochronology, radiogenic isotope geochemistry and stable isotope geochemistry.
这里有37讲，主要是地质年代学、放射性同位素地球化学和稳定同位素地球化学。
英语百科
Radiogenic nuclide
（重定向自Radiogenic isotope）
A radiogenic nuclide is a nuclide that is produced by a process of radioactive decay. It may itself be radioactive (a radionuclide) or stable (a stable nuclide).
Radiogenic nuclides (more commonly referred to as radiogenic isotopes) form some of the most important tools in geology. They are used in two principal ways: