Carbonate U-Pb dating represents a significant breakthrough in sedimentary geochronology. By measuring uranium-lead isotopes in carbonate minerals such as calcite and dolomite, it enables direct acquisition of absolute ages for depositional or subsequent diagenetic-alteration events. This technique is extensively applied to precisely calibrate marine stratigraphic ages, elucidate cementation and dissolution histories of hydrocarbon reservoirs, reconstruct paleoceanographic environments, and provide direct metallogenic chronology for carbonate-hosted ore deposits, including Mississippi Valley Type (MVT) deposits.