How to date a fossil using radiometric dating
The stratigraphy of an archaeological site can be used to date, or refine the date, of particular activities ("contexts") on that site.For example, if a context is sealed between two other contexts of known date, it can be inferred that the middle context must date to between those dates.Several dating methods exist, depending on different criteria and techniques, and some very well known examples of disciplines using such techniques are, for example, history, archaeology, geology, paleontology, astronomy and even forensic science, since in the latter it is sometimes necessary to investigate the moment in the past in which the death of a cadaver occurred.
These were long on armchair speculation and short on substantive supporting evidence.
In addition, because of its particular relation with past human presence or past human activity, archaeology uses almost all the dating methods that it shares with the other sciences, but with some particular variations, like the following: Seriation is a relative dating method (see, above, the list of relative dating methods).
An example of a practical application of seriation, is the comparison of the known style of artefacts such as stone tools or pottery.
It is commonly assumed that if the remains or elements to be dated are older than the human species, the disciplines which study them are sciences such geology or paleontology, among some others.
Nevertheless, the range of time within archaeological dating can be enormous compared to the average lifespan of a singular human being.