Osl dating australia

It includes techniques such as optically stimulated luminescence (OSL), infrared stimulated luminescence (IRSL), and thermoluminescence dating (TL).

"Optical dating" typically refers to OSL and IRSL, but not TL.

These slowly decay over time and the ionizing radiation they produce is absorbed by mineral grains in the sediments such as quartz and potassium feldspar.The trapping sites are imperfections of the lattice — impurities or defects.The ionizing radiation produces electron-hole pairs: Electrons are in the conduction band and holes in the valence band.Mixed deposits can be identified and taken into consideration when determining the age .The concept of using luminescence dating in archaeological contexts was first suggested in 1953 by Farrington Daniels, Charles A. Saunders, who thought the thermoluminescence response of pottery shards could date the last incidence of heating.

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