Osl dating labs
The radiation emanates from radioactive grains within the sediment, such as zircons.
It is effective for hundreds of thousands of years, and dates how long the sediment has been buried.
Exposure to sunlight resets the luminescent signature and so the time period since the sediment was buried can be calculated.
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.
There are so many other methods of dating Quaternary sediments and organic material that it is impractical to cover them all here in detail.
Uranium-series uses the decay of uranium and thorium isotopes (Th) in calcites in particular, such as stalactites and stalagmites in caves.
Potassium-argon and argon-argon dating can be used to date the formation of volcanic rocks.
Although a relatively new technique, particularly in subaqueous sediments, Strata Data have pioneered its industrial application in dating superficial seabed deposits for geohazard risk assessment.
The DRILL is a research laboratory dedicated to fundamental investigations in the luminescence properties of earth materials, and to the application of luminescence dating techniques to geomorphological, geological, and archeological problems.