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Fluorine Dating: Bones buried at the same time will absorb the same amount of fluorine from the soil which means they must be the same age.Calendar Dating: Absolute dating: Only possible with objects that have dates inscribed on them (ie: coins) Chronometric dating: Measures the time since something has elapsed.– Objects found deeper in the ground are older (law of superposition) – Type dating (Seriation): types of artifacts are arranged chronologically according to style.Type dating can be done with modern cars to stone tools.Techniques of recovery include: Data collection and analysis is oriented to answer questions of subsistence, mobility or settlement patterns, and economy.Archaeologists like to use several dating methods to find out more about artifacts.They do not, however, give "absolute" dates because they merely provide a statistical probability that a given date falls within a certain range of age expressed in years.Chronometric methods include radiocarbon, potassium-argon, fission-track, and thermoluminescence.

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It does not, however, allow one to independently assign an accurate estimation of the age of an object as expressed in years.Radiocarbon Dating: This method is based on the radioactive decay of carbon-14 isotope (14C).When a carbon-based organism dies, any 14C absorbed during its life begins radioactive decay at a rate measured by “half-life” (how long it takes half of it to decay). A mass spectrometer is used to measure how much of the half life is left and calculates the time that has elapsed since it died.In the end, archaeologists often use a few different methods on an group of artifacts found together to come up with a reasonable date.

Relative dating gives you the age of an artifact in relation to another object.

This also works with stone tools which are found abundantly at different sites and across long periods of time.

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