Dating methods used in archaeology outlook cached exchange mode not updating
After archaeologists have excavated the site completely, or to the extent the project planned, they fill the site back in and take the artifacts to be analyzed.The artifacts are taken to a lab, either locally or at the archaeologists home institution.For their own religious and administrative purposes, the Egyptians compiled lists of kings, sometimes with the exact length of reign.Fragments of such lists survived ('Palermo stone'); none of them is well enough preserved to solve every detail of absolute chronology.The annual rings vary in size, depending on the weather conditions in each region, but they are similar for all trees of the same area.
Thus, 3700 Tree-ring dating: Most trees produce a ring of new wood each year, visible as circles when looking at the cross section of a piece of wood.
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).
There are many methods including aerial photography which is simply taking pictures from an airplane, hot air balloon or even a remote controlled drone; ground penetrating radar which is used to locate artifacts hidden below ground, and LIDAR, which uses lasers to scan the surface from the air through vegetation.
After archaeologists have thoroughly surveyed the site they begin excavation. Then archaeologists excavate the site using trowels, shovels, and various other tools.