Glossary of some common terms used in optically stimulated luminescence, radiocarbon and cosmogenic nuclide dating. Aliquot A sub-sample of the material being measured. Allochthonous Rocks that have been transported & deposited (inc. erratics, alluvial fans, gelifluction, etc. Attenuation length (Λ) Thickness of a material (rock, snow, ice) required to attenuate intensity of cosmic-ray flux due … Continue reading Cosmogenic nuclide & radiometric dating glossary