From isotopic chronology to tectonic chronology

From isotopic chronology to tectonic chronology, several stages have to be developed: thermo-chronology, tectono-thermochronology, and deformation chronology. The isotopic chronology merely and simply refers ages of geologic episodes, however, the thermo-chronology can entrust temperature information to ages, and the tectonic chronology emphasizes time-space four-dimensional evolution in a geological or tectonic processes. The tectonic chronology has extra significance as temperature, crustal depth changes and thermo-fluid participating in, besides a time factor. It deals with time, temperature, horizontal and vertical deformation and development. In view of present technology and understanding level, we should pay special attentions to some important problems. Among these problems, emphasizing field geology or structural geology is the essential prerequisite to develop the tectonic chronology.