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    Optical dating of sediments

    It goes on to then discuss the limitations of the technique and factors affecting reliability.*Prices in US$ apply to orders placed in the Americas only.The precision and accuracy of the technique, which has the potential to date sediments deposited during the last 500,000 years or so, is limited by the random and systematic uncertainties associated with producing optical ages.These result in total relative age uncertainties of between 10% and 20% at the 68% confidence interval, which are similar in size to those associated with Late Quaternary oxygen-isotope chronologies.

    At Wadi Sabra (SW Jordan) human occupation dates back to the Palaeolithic and Epipalaeolithic.By extracting sediment cores from the clam garden terrace and wall researchers are helping determine when clam gardens on Quadra Island were first constructed and how they were maintained through time.Optical dating is a rapidly developing technique, used primarily in the dating of sediments deposited in the last 500,000 or more years.sand dunes, beaches, river beds, etc.) and artefacts that are up to 500,000 years old.This helps us, not only to understand how the earth’s surface responds to shifts in long- and short-term climate, but also the history of human settlement and migration.

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