Chemostratigraphy

Chemostratigraphy is a scientific method used to study and compare layers of rock or sediment by analyzing their chemical composition, especially the types and amounts of certain elements or isotopes they contain. By examining these chemical signatures, scientists can identify different layers, correlate them across wide areas, and understand Earth's historical changes. This technique is valuable in fields like oil exploration, geology, and paleontology, as it helps to date and interpret past environmental conditions, providing a chemical fingerprint for specific time periods in Earth's history.