3 methods of dating artefacts
The deposit thus occurring forms layers depending on the nature of the material brought in by the people inhabiting the area.
According to this method, the upper deposits are younger and the lower deposits are older.
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In the core regions surface sites have been registered almost exclusively.
For dating such site assemblages, we depend on typochronological dating.
Even when the absolute dates are available, we have to supplement the information with relative dating.
But, for a single culture site the method is quite reliable.The latter are more suitable as cultural '' than those artefacts with a more continuous presence.Based on the largest common denominator and taking into account the position of the Meuse Valley vis-a-vis the areas studied for the chrono-typological diagrams mentioned before, we have defined 10 cultural phases for the Meuse Valley Project, of which the two Beaker phases are often combined.This closely agrees with the fact that the seals from Indus Valley style from Ur, Kish and Tell Asmar and other sites fall within the range of 2500-1500 B. When a group or type of objects are found together under circumstances suggesting contemporanity they are said to be associated.It is nearly always association with other phenomena that gives a first clue as to the use, the age and chronological attribution of a potential datum, but age at least may sometimes be inferred from position in a geological deposit or a layer of peat.
All other artefact types are too indistinct typologically and/or not specific enough chronologically to be used as a means of dating.