Petrography is a branch of geology that involves the detailed study and analysis of rock samples, typically under a microscope. This field focuses on the mineral composition, texture, grain size, and overall characteristics of rocks to better understand their origin, formation, and geological history. Petrography is essential for identifying and classifying rocks, as well as for interpreting the processes that have shaped them over time. Researchers in petrography often examine thin sections of rocks to investigate their mineral content and fabric, and the data obtained can provide important insights into the geological processes that have occurred in a given area.