SEARCH Articles Figures Tables Applications of Isotope Ratio Measurements in Geochemistry and Geochronology Characteristic Features of Cl Isotope Geochemistry Geochemistry Geochemistry isotope ratio measurements Geochemistry isotopic equilibrium Geochemistry isotopic ratios Geochemistry osmium isotopes Geochemistry radiogenic isotopes Isotope geochemistry radionuclides Isotope geochemistry stable isotopes Lead isotope geochemistry Lead isotope geochemistry composition Lead isotope geochemistry deposits Lead isotope geochemistry stable isotopes Radiogenic isotopes mantle geochemistry