The basis for stratigraphy seems quite intuitive today, but its applications were no less than earth-shattering to archaeological theory.For example, JJA Worsaae used this law to prove the Three Age System.
Artefacts often have a distinctive style or design, which developed over a period of time.
In archaeology, the gradual changes in motifs were exploited systematically as a dating method by researchers from Montelius onwards.
After the 'death' of these organic materials the Carbon-14 atoms decay. Therefore it is possible to measure the number of these atoms in organic materials to obtain quantified information on the date of an item.
The method has a margin of accuracy of several hundred years and it is therefore not useful to fix dates in historic periods, but very useful for prehistory (in Egypt before 3000 BC).
For Egypt and the Eastern Mediterranean, this method from European prehistory is currently under development in a project based at Vienna.