Principle of carbon dating

The method also assumes a 'zeroing' event in the life of the material, when it was either last heated or exposed to sunlight.

Dating, in geology, determining a chronology or calendar of events in the history of Earth, using to a large degree the evidence of organic evolution in the sedimentary rocks accumulated through geologic time in marine and continental environments.

To date past events, processes, formations, and fossil organisms, geologists employ a variety of techniques.

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The stratigraphic column, a composite of these systems, was pieced together from exposures in different regions by application of the principles…Optical dating, also known as optically stimulated luminescence (OSL), dates the last time mineral sediments (usually quartz or feldspar grains ) were exposed to sunlight.In the Willandra area it is typically used on quartz sand grains which have been buried and have not been exposed to sunlight since burial.A number of methods are used, all of which have their advantages, limitations and level of accuracy.Complex dating problems often use a variety of techniques and information to arrive at the best answer.

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