Luminescence dating in archaeology from origins to optical

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OSL dating can also be applied to heated materials, such as burnt stones and pottery, but TL dating remains the method of choice for such materials.Bøtter-Jensen and Duller (The OSL dating technique is based on the fact that natural minerals (such as quartz and feldspar) are not perfectly formed but contain defects in their crystal lattices that are able to trap negatively charged electrons within positively charged vacancies (“holes”).When these sediments are subsequently cooled and deposited within accumulating sediments, e.g., within a cave, they once again become hidden from sunlight, and the “batteries” begin to recharge (Figure ).In other words, natural radiation sources in the immediate vicinity of the grains will result in the movement of new electrons out of their orbitals and into traps, with the rate of filling being determined by the level of natural radiation.The lighting level in the luminescence laboratory is low and usually red, similar to the conditions in a photographic darkroom.

Carlton, others from Marralam, and the local Mirriuwung–Gajerrong people), the Waringarri Aboriginal Corporation, the Conservation Commission of the Northern Territory, the Aboriginal Areas Protection Authority, and the managers of Spirit Hills station for permission to undertake this study; and other members of the ANSTO AMS team (in particular D. We acknowledge the support of the Australian Research Council through Queen Elizabeth II Fellowships to R. The Australian Institute of Aboriginal and Torres Strait Islander Studies, Australian National University and University of Wollongong funded the 1995 fieldwork, and the Australian Institute of Nuclear Science and Engineering funded the 1993 OZ sample AMS determinations. When one technique is not suitable to a particular situation, another technique often is.The basic principles of all the different luminescence dating techniques, and also electron spin resonance (ESR) dating, are the same: each relies on the effects of radiation exposure.

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