Optical dating of sediments


17-Feb-2019 00:28

Optical dating is a method of determining how long ago minerals were last exposed to daylight.It is useful to geologists and archaeologists who want to know when such an event occurred.Alternate names sometimes used are optically stimulated luminescence dating (OSL dating) and photoluminescence dating (PL dating).Ages can be determined typically from a few hundred years to 100,000 years, and can be reliable when suitable methods are used and proper checks are done.Ages can be obtained outside this range, but they should be regarded with caution.

Optical dating was invented in 1984 in the physics department at Simon Fraser University, British Columbia, Canada, by David Huntley and colleagues.It was quickly used by Martin Aitken’s laboratory in Oxford, England, but it was many years before it was adopted elsewhere.Now there are numerous laboratories around the world, though most are in Europe.Optical dating is one of several techniques in which an age is calculated from: (age) = (total absorbed radiation dose) / (radiation dose rate) The radiation dose rate is calculated from measurements of the radioactive elements (K, U, Th and Rb) within the sample and its surroundings and the radiation dose rate from cosmic rays.



Optical dating of pottery, burnt stones, and sediments from selected Quebec archaeological sites1 M. Lamothe Abstract Recent developments in luminescence.… continue reading »


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An Introduction to Optical Dating The Dating of Quaternary Sediments by the Use of Photon-stimulated Luminescence by Aitken, M. J. and a great selection of similar.… continue reading »


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Request PDF Optical Dating of a. Interstadial and non-glacial stadial sediments collected in boreholes from Sokli in north- eastern Finland have.… continue reading »


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Single-grain optical dating of Quaternary sediments why aliquot size matters in luminescence dating GEOFFREY A. T. DULLER BOREAS Duller, G. A. T. 2008 November.… continue reading »


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A new method for dating sediments is proposed, which determines the time since the sediment was last exposed to sunlight. An argon-ion laser is used to excite.… continue reading »


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Infrared Optical Dating of Organic-rich Sediments Jinsheng Hu, Peking University, 1985, Institute of High Energy Physics, Academia Sinica, 1988… continue reading »


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