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Luminescence dating wiki

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It can be caused by chemical reactions, electrical energy, subatomic motions, or stress on a crystal.

The term 'luminescence' was introduced in 1888 by Eilhard Wiedemann.

A number of radioactive isotopes are used for this purpose, and depending on the rate of decay, are used for dating different geological periods.

More slowly decaying isotopes are useful for longer periods of time, but less accurate in absolute years.

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With the existing analytical methods, different issues related to authenticity, absolute dating, material characterization, technology and origin can be answered.

This means that a soil sample will contain a mixture of particles each potentially dating to any period within the history of the soils development; hence, The dynamics or organic matter and mineral grain inclusion in the soil is an important factor in the measured date.

The measured age of organic matter, or mineral grains, has to be regarded as the minimal age for the length of soil formation, whilst the bulk soil organic carbon age is regarded as the mean residence time (MRT) (Wang et al., 1996).

After one half-life has elapsed, one half of the atoms of the substance in question will have decayed.

Many radioactive substances decay from one nuclide into a final, stable decay product (or "daughter") through a series of steps known as a decay chain.