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Procedures used for luminescence dating of sediments

1994; Elsevier BV; Volume: 13; Issue: 5-7 Linguagem: Inglês

10.1016/0277-3791(94)90049-3

1873-457X

V. Mejdahl, Hanne H. Christiansen,

Image Processing and 3D Reconstruction

An account of the procedures for thermoluminescence (TL) and optically stimulated luminescence (OSL) dating of sediments used at the Nordic Laboratory for Luminescence Dating is given. The topics discussed include sampling, sample preparation, separation of quartz and feldspars using heavy liquids, dose rate estimation and methods for estimating the equivalent dose. Special attention is paid to the partial bleach TL technique of Mejdahl (1988), which appears to give reliable results for partially bleached sediments. Optically stimulated luminescence dating using stimulation by infra-red (IR) and green light has been taken up and especially added-dose methods using stimulation by IR or green light have been tried with some success. Some sources of error are discussed, including the adverse effect of shallow traps.