Absolute chronological dating

20-Jan-2018 08:49 by 5 Comments

Absolute chronological dating

n a classic geological principle, known as the Law of Superposition.

Like geological exposures, archeological sites usually contain stratified layers.

Relative chronologies in archeology derive from the close study of human occupation layers.

In an undisturbed site, artifacts found together in the same strata will most likely date from the same occupation period.

Each object at an archeological site has a different time relationship with every other object at that site.

Artifacts deposited in one stratum-a more or less homogeneous material, visually separable from other levels by a distinct change in color, texture, or other characteristic-have a distinct relationship with artifacts recovered from strata (plural of stratum) above or below them.

Westerners think of time in linear terms, extending back over more than 2.5 million years of human existence.

While some archeologists working with indigenous people incorporate traditional concepts of time into their research, the linear view of time lies behind most archeological research.Nevertheless, they do help archeologists confirm some of their relative chronologies, and both fields use stratigraphy-the natural and cultural layering of soil-as the basis of these dating techniques (Mc Millon 195).It is possible for geologists to determine absolute dates for geological occurrences, but most of the methods they use are accurate only when they are dealing with millions of years rather than for smaller increments such as tens of thousands of years (Mc Millon 195).the determination of the chronology of events studied from archaeological data.Two systems of archaeological dating are used: absolute and relative chronology.Distortions can occur during or after material deposition that may cause strata to disappear in one area of the site and reappear farther along at a different distance from the surface. Landfills, dumps, and landslides or other earth movements may distort a site's stratigraphy.