In other words, the biochemical clock that this method relies on runs at a different rate in different environments.Fluorine analysis is primarily used for verifying whether or not two fossils in the same strata at a site were in fact contemporaneous.At the same time, percolating ground water deposits trace amounts of fluorine and other elements, such as uranium, into the bone.As a result, the amount of fluorine Fluorine analysis can be used only as a relative dating method because the rate of decay and the amount of dissolved minerals in the ground water varies from site to site.
As a result, it was difficult to chronologically compare fossils from different parts of the world.
However, the assumption of contemporaneity may not always be correct.
This is due to the fact that one or both of the objects may have been moved or redeposited into a different location.
These processes result in All of these processes confuse the stratigraphic record.
In many cases, however, it is possible to reconstruct the original sequence of strata so that they can be used for relative dating.