Non scientific methods of dating

non scientific methods of dating-25
Using the potassium-argon method, Fitch and Miller were the first to measure the age of the tuff.Their result of 212–230 million years did not agree with the age of the fossils (elephant, pig, ape and tools) so they rejected the date.In this case, even if the foundation of the building is found in the same stratigraphic level as the previous occupation, the two events are not contemporary.

Using the potassium-argon method, Fitch and Miller were the first to measure the age of the tuff.Their result of 212–230 million years did not agree with the age of the fossils (elephant, pig, ape and tools) so they rejected the date.In this case, even if the foundation of the building is found in the same stratigraphic level as the previous occupation, the two events are not contemporary.

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Absolute dating methods mainly include radiocarbon dating, dendrochronology and thermoluminescence.

Stratigraphy Inspired by geology, stratigraphy uses the principle of the superposition of strata which suggests that, in a succession of undisturbed SOILS, the upper horizons are newer than the lower ones.

Following the death of an organism, any exchange ceases and the carbon 14, which is radioactive and therefore unstable, slowly begins to disintegrate at a known rate (half-life of 5730 years, ie, after this period only half of the total carbon 14 present at the time of death remains).

The amount of carbon 14 remaining in the material to date is compared to a reference standard (ratio 14C/total carbon, 12C and 13C) to calculate the time elapsed since its occurrence.

Their presence on archaeological sites is used to date the soil layers and the objects and events they are associated with and thus contributes to refine the chronology of sites.

Typology Typology is a method that compares reference objects in order to classify them according to their similarity or dissimilarity and link them to a specific context or period.

This technique is frequently used when it is impossible to make use of absolute dating methods; it generally allows archaeologists to identify the period to which a cultural site or object belongs, without specifying the date of occupation.

This method is primarily applied to projectile points and ceramic vessels.

Relative dating includes methods that rely on the analysis of comparative data or the context (eg, geological, regional, cultural) in which the object one wishes to date is found.

This approach helps to order events chronologically but it does not provide the absolute age of an object expressed in years.

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