In modern archeology, radiocarbon dating of organic remains is increasingly used. But it is accurate enough, if only the age of the finds does not exceed 40 thousand years. Date for racemization of amino acids - used to determine the age of organic substances. This method is based on measuring the rate of racemization (transition from the L-form to the D-form) of the amino acid, which is stable and known, although it may depend on temperature. It is known that after the death of an organism the structure of its amino acids begins to slowly change into a mirror one with respect to the initial one. Hence, finding the ratio of the two forms of amino acids, you can determine when the process of adjustment began - the more accurately, the more constant its speed.

In modern archeology the radiocarbon dating of organic remains is increasingly used

There are two systems of archaeological dating of objects: absolute and relative chronology. The absolute chronology determines the calendar position of archaeological objects or historical events on the time scale, and the relative chronology determines their position in time relative to each other, without indicating the exact duration of a particular period.

As it turned out, the dating of organic residues is best done with the help of an egg shell, which is subjected to external influences less than even bones or shells. In one of the caves of South Africa, American archaeologists E. Bruhe and G. Miller found a shell of ostrich eggs next to the remnants of the human skeleton of a modern type. The amino acid dating eggs showed that they were broken down at the moment from 78 to 110 thousand years ago. Thus, this is one of the oldest finds of people of the current appearance.