Archaeological scientific dating techniques are chris brown and rihanna still dating


14-Nov-2017 18:08

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

In other words, artifacts found in the upper layers of a site will have been deposited more recently than those found in the lower layers.

Plotting several curves can allow the archaeologist to develop a relative chronology for an entire site or group of sites.

For detailed information about how seriation works, see Seriation: A Step by Step Description.

Cross-dating of sites, comparing geologic strata at one site with another location and extrapolating the relative ages in that manner, is still an important dating strategy used today, primarily when sites are far too old for absolute dates to have much meaning.

The scholar most associated with the rules of stratigraphy (or law of superposition) is probably the geologist Charles Lyell.

Seriation, on the other hand, was a stroke of genius.At the scale of more than one object, often called an assemblage, the event is usually the deposition of those objects at a single place.Such an event, if human caused, is often called an occupation. It can be trivially short for many manufactures, but it can last over several centuries for some occupations.Dating in archaeology is the process of assigning a chronological value to an event in the past.

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Philosophers differ on how an event is defined, but for cultural history, it can be taken as a change in some entity: the addition, subtraction, or transformation of parts. At the scale of individual object, the event is either manufacture (which, e.g., is additive and transformative for ceramics, but subtractive for lithics) or some sort of attrition (either use or natural wear).In 1901, Douglass began investigating tree ring growth as an indicator of solar cycles.