Relative dating methods allow one to determine if an object is earlier than, later than, or contemporary with some other object.It does not, however, allow one to independently assign an accurate estimation of the age of an object as expressed in years.Archaeologists have access to various techniques for dating archaeological sites or the objects found on those sites.
Until this century, relative dating was the only technique for identifying the age of a truly ancient object.
Relative dating includes methods that rely on the analysis of comparative data or the context (eg, geological, regional, cultural) in which the object one wishes to date is found.
This approach helps to order events chronologically but it does not provide the absolute age of an object expressed in years.
This also works with stone tools which are found abundantly at different sites and across long periods of time.
Stratigraphic dating is based on the principle of depositional superposition of layers of sediments called strata.