Stratigraphy is a chronometric dating method dating a asian girl
The production of phase interpretations is the first goal of stratigraphic interpretation and excavation.
Archaeologists investigating a site may wish to date the activity rather than artifacts on site by dating the individual contexts which represents events.
Sub-groups can then be clustered together with other sub-groups by virtue of their stratigraphic relationship to form groups, which in turn form "phases." A sub-group burial could cluster with other sub-group burials to form a cemetery, which in turn could be grouped with a building, such as a church, to produce a "phase".
Phase implies a nearly contemporaneous Archaeological horizon, representing "what you would see if you went back to time X".
If one looks at the sequence in fig A, one may find that the cut for the construction of wall 2, context 5, has cut through layers 9 and 10, and in doing so has introduced the possibility that artifacts from layers 9 and 10 may be redeposited higher up the sequence in the context representing the backfill of the construction cut, context 3.
Contexts are single events or actions that leave discrete, detectable traces in the archaeological sequence or stratigraphy.
They can be deposits (such as the back-fill of a ditch), structures (such as walls), or "zero thickness surfaciques", better known as "cuts".
Some degree of dating objects by their position in the sequence can be made with known datable elements of the archaeological record or other assumed datable contexts deduced by a regressive form of relative dating which in turn can fix events represented by contexts to some range in time.
For example, the date of formation of a context which is totally sealed between two datable layers will fall between the dates of the two layers sealing it.Stratigraphy is based on the law of superposition--like a layer cake, the lowest layers must have been formed first.