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Once a geologist has determined the absolute age of a geological formation, the archaeologist can assign an indirect date to objects found in the formation. The method, which is particularly helpful in dating formations associated with the remains of fossil hominids and Lower Paleolithic tools, has been successfully used to date stone flakes and chopping tools from Koobi Fora in Northern Kenya to approximately 2,, years ago and the remains of Zinjanthropus to approximately 1,, years ago. Moreover, stratigraphic dating is sometimes based on the objects that are found within the soil strata.
One good example is granite, which normally has some potassium feldspar Figure 8. The proportion of 40K remaining is 0. Dating techniques Photo by: Bastos Dating techniques are procedures used by scientists to determine the age of an object or a series of events. Uranium-series uses the decay of uranium and thorium isotopes U, U and Th in calcites in particular, such as stalactites and stalagmites in caves. The study of genetic data allows us to uncover long-lasting questions about migrations and population mixing in the past.