Research news on biostratigraphy

Biostratigraphy is a stratigraphic discipline that uses the vertical and lateral distribution of fossil organisms within sedimentary successions to establish relative ages, correlate stratigraphic units, and reconstruct depositional histories. It relies on the identification of biozones, defined by the first and last occurrences, abundance peaks, or assemblages of key taxa, typically microfossils such as foraminifera, conodonts, or palynomorphs. Biostratigraphic frameworks underpin chronostratigraphic schemes, facilitate basin analysis and paleoenvironmental interpretation, and are critical for subsurface correlation in hydrocarbon and groundwater exploration, especially where radiometric dating is limited or sedimentary records are incomplete.