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Optically stimulated luminescence dating method

The OSL signal is reset by exposure to sunlight, so the signal is reset to zero while the sand is being transported such as in a glacial meltwater stream. Quaternary Geochronology 5, —. Better still, unlike radiocarbon dating , the effect luminescence dating measures increases with time. The single aliquot regeneration SAR protocol Murray and Wintle, is the technique of choice for a variety of applications, and was used for analyses associated with this USGS investigation. In order to measure the age, two factors must be known; 1 the environmental dose rate, and 2 the laboratory dose of radiation that produces the same intensity of luminescence as did the environmental radiation dose the equivalent dose. History[ edit ] The concept of using luminescence dating in archaeological contexts was first suggested in by Farrington Daniels, Charles A.
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Luminescence Dating

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A dating method that measures the amount of light released when an object is heated. Thermoluminescence, or TL, has been used since the s to determine the approximated firing date of pottery and burnt silicate materials. TL has a wide dating range; it has been used to date ceramics from a few hundred years old to geologic formations that are half a million years old. The technique measures the small amount of energy that continually builds up in the mineral crystal lattice.
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A robust feldspar luminescence dating method for Middle and Late Pleistocene sediments

Desert Archaeology crew chief Caleb E. Ferbrache explains how electrons trapped in rock can be used to date archaeological deposits—and why, unlike the more familiar carbon dating, OSL allows dating in the absence of preserved organic material. Most people know that archaeologists regularly use carbon also called radiocarbon to date materials they find. While radiocarbon dating revolutionized archaeology and remains the most common dating method in the discipline, it is not the only method available. One alternative is optically stimulated luminescence.
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