Problems with archaeological dating
In other words, artifacts found in the upper layers of a site will have been deposited more recently than those found in the lower layers.
Cross-dating of sites, comparing geologic strata at one site with another location and extrapolating the relative ages in that manner, is still an important dating strategy used today, primarily when sites are far too old for absolute dates to have much meaning.
In order to obtain a radiocarbon date, the amount of remaining Carbon-14 atoms in a sample are measured.
The less Carbon-14 that is left, the older the sample.
There are two techniques for dating in archaeological sites: relative and absolute dating.
A fish caught in hard water has thus a higher Carbon-14 age than contemporaneous terrestrial samples.For example, JJA Worsaae used this law to prove the Three Age System.For more information on stratigraphy and how it is used in archaeology, see the Stratigraphy glossary entry.The scholar most associated with the rules of stratigraphy (or law of superposition) is probably the geologist Charles Lyell.
The basis for stratigraphy seems quite intuitive today, but its applications were no less than earth-shattering to archaeological theory.
Archaeologists use many different techniques to determine the age of a particular artifact, site, or part of a site.