Chronometric dating relative dating

Rated 3.96/5 based on 896 customer reviews

It was now possible to assign a calendar date to archaeological sites in the American southwest for over 1000 years.Determining calendar rates using dendrochronology is a matter of matching known patterns of light and dark rings to those recorded by Douglass and his successors.

Seriation is thought to be the first application of statistics in archaeology. The most famous seriation study was probably Deetz and Dethlefsen's study Death's Head, Cherub, Urn and Willow, on changing styles on gravestones in New England cemeteries.Stratigraphy is the oldest of the relative dating methods that archaeologists use to date things.Stratigraphy is based on the law of superposition--like a layer cake, the lowest layers must have been formed first.Not only that, it varies regionally, such that all trees within a specific species and region will show the same relative growth during wet years and dry years.Each tree then, contains a record of rainfall for the length of its life, expressed in density, trace element content, stable isotope composition, and intra-annual growth ring width.

Leave a Reply