Relative dating and absolute dating techniques


29-Mar-2015 07:14

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The stratigraphy may also reflect seasonal variation in the velocity of stream flow.By counting each pair of varves the age of the deposit can be determined.Other techniques are occasionally useful, for example, historical or iconographic references to datable astronomical events such as solar eclipses (archaeoastronomy).When archaeologists have access to the historical records of civilizations that had calendars and counted and recorded the passage of years, the actual age of the archaeological material may be ascertained—provided there is some basis for correlating our modern calendar with the ancient calendar.

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Those laid down during the fall and winter have a dark color because of the presence of dead vegetation; those deposited during the rest of the year have a light color.

By comparing the pattern of tree rings in trees whose lifespans partially overlap, these patterns can be extended back in time.



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