Optically stimulated luminescence dating cost
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.
However, it is possible to identify saturated samples through measurement.
A measure is made of a natural signal which is then correlated with the saturating exponential growth curve.
The luminescence of each sample is measured using industry-standard Luminescence Readers (manufactured by Risoe National Laboratories, Denmark) which incorporate 90Sr beta-sources, and 470nm LED optical stimulation.
The total absorbed dose (termed De, measured in units of Gy) is measured using standard luminescence dating procedures (Murray and Wintle, 2000).
The method is routinely applied to sediments as old as 250Ka and, consequently, is ideal for dating material beyond the range of 14C dating (A short length of undisturbed core is sub sampled in a dark room to extract a few grams of sediment.
Luminescence dating (including thermoluminescence and optically stimulated luminescence) is a type of dating methodology that measures the amount of light emitted from energy stored in certain rock types and derived soils to obtain an absolute date for a specific event that occurred in the past.
Similarly, inaccurate estimates of pore water salinity will dramatically affect the results.
With the assistance of Fugro UK we have developed a method for converting the measured water content to a time-averaged water content for each sample.
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.