I: Introductory Chapters.- 1. Introduction.- 2. Mass Spectrometry.- II: Dating Methods.- 3. Uranium, Thorium, Lead Dating.- 4. Rubidium-Strontium Dating.- 5. Potassium-Argon and Argon-40/Argon-39 Dating.- 6. Carbon-14 Dating.- 7. Tritium Dating.- 8. Other Dating Methods.- III: Environmental Isotopes.- 9. Environmental Isotopes in the Atmosphere and Hydrosphere.- 10. Isotopes in the Biosphere.- 11. Isotopes in the Lithosphere.- 12. Isotopes in Palaeoclimatology.- 13. Radioactive Waste.- Appendixes.- 1. The Exchange of Oxygen Isotopes in Carbon Dioxide-Phosphoric Acid Systems.- 2. Concentration and Purification of Zircon.- 3. A Palaeotemperature Equation for Planktonic Foraminifera.- Author Index.