Chronostratigraphy
Chronostratigraphy is the branch of geology that deals with the dating and correlation of rock strata by analyzing their fossil content and other features. It involves the study of the relative timing of events in Earth's history, such as the deposition of rock layers and the evolution of different life forms. By examining the sequence of rock layers and the fossils they contain, chronostratigraphy helps scientists understand the geological timescale and the history of the Earth.