Archeological dating technique
After archaeologists have thoroughly surveyed the site they begin excavation. Then archaeologists excavate the site using trowels, shovels, and various other tools.They start by setting up a grid and connecting the grid to a datum. They carefully remove dirt and note the precise location of any artifacts found.A datum is a fixed reference point, often one placed by the U. The context of the artifact is just as important as the artifact itself, so the artifacts are always carefully mapped and documented.Archaeologists also look for features while excavating a site.Artifacts can also be dated using dendrochronology, which uses the annual growth rings in trees to establish an age for artifacts.Artifacts can also be dated using radiocarbon dating.This uses the decay of carbon and the ratio of C-12 to C-14 to determine the age of the artifact. It is also not very accurate for more recent artifacts.
They are analyzed and classified based on the research questions of the archaeologist.
This number is usually written as a range, with plus or minus 40 years (1 standard deviation of error) and the theoretical absolute limit of this method is 80,000 years ago, although the practical limit is close to 50,000 years ago.