Nucleosynthesis and nuclear decay -- Experimental techniques -- The Rb--Sr method -- The Sm--Nd method -- Lead isotopes -- Isotope geochemistry of oceanic volcanics -- Isotope geochemistry of continental rocks -- The Re--Os system -- Specialist isotopic schemes -- K--Ar and Ar--Ar dating -- Rare gas geochemistry -- U-series dating -- U-series geochemistry of igneous systems -- Cosmogenic nuclides -- Extinct radionuclides -- Fission track dating.