Chronometric dating archaeology definition
These variations, given favorable conditions, form a consistent pattern; and sections or cores taken from beams in ruins have been matched to provide a long chronology over large areas.
The method is based on the principle that trees add a growth ring for each year of their lives, and that variations in climatic conditions will affect the width of these rings on suitable trees.
By comparing a complete series of rings from a tree of known date (for example, one still alive) with a series from an earlier, dead tree overlapping in age, ring patterns from the central layers of the recent tree and the outer of the old may show a correlation which allows the dating, in calendar years, of the older tree.On the other hand, absolute dating includes all methods that provide figures about the real estimated age of archaeological objects or occupations.These methods usually analyze physicochemical transformation phenomena whose rate are known or can be estimated relatively well.Items having an established date, such as dated coins or buildings, or ceramics of known manufacture are most often used.
By itself, a cross-dated chronology does not give absolute dates, but it may be calibrated by reference to other dating methods.
However, its use is still helpful where recognizable products of dateable manufacture are found in undated contexts with no possibility of using a technique.