The basic cost is £550/sample plus reporting time based on your requirements.The report will contain OSL results calibrated for sample water content and salinity.Turnaround time is several weeks to several months and very dependent on the time taken to prepare the samples, with organic rich samples taking the longest. All sediments contain trace minerals including uranium, thorium and potassium.These slowly decay over time and the ionising radiation they produce is absorbed by other constituents of the sediments such as quartz and feldspar.Preheat plateau and dose recovery tests were conducted.
This research was supported by the Three Tribal Groups of the Willandra Lakes World Heritage Area and staff of Mungo National Park and the Willandra Lakes World Heritage Area.
Stimulating samples using infrared light causes luminescence, the intensity of which varies depending on the amount of radiation absorbed.
Exposure to sunlight resets the luminescent signature and so the time period since the sediment was buried can be calculated.
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View the full list Australia was once home to giant reptiles, marsupials and birds (and some not so giant), but the extinction of this megafauna has been the subject of a debate that has persisted since the 19th century.