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02-Apr-2020 06:32

The most common relative dating method is stratigraphy.Other methods include fluorine dating, nitrogen dating, association with bones of extinct fauna, association with certain pollen profiles, association with geological features such as beaches, terraces and river meanders, and the establishment of cultural seriations.Archaeologists use many different techniques to determine the age of a particular artifact, site, or part of a site.Two broad categories of dating or chronometric techniques that archaeologists use are called relative and absolute dating.This principle presumes that the oldest layer of a stratigraphic sequence will be on the bottom and the most recent, or youngest, will be on the top.

Stratigraphy is based on the law of superposition--like a layer cake, the lowest layers must have been formed first.

This aspect of Werner's model was useful for explaining the origin of tilted sedimentary rocks.

(dark brown) Flat lying sedimentary rocks were eventually precipitated.

It is the archaeologist's role to attempt to discover what contexts exist and how they came to be created.

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Archaeological stratification or sequence is the dynamic superimposition of single units of stratigraphy, or contexts.

The secondary rocks were thought to include interlayered basalts, which Werner thought formed by combustion of buried coal layers.