Dating optical

18-Jun-2017 01:59

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This is because water attenuates (scatters) the radiation, reducing the total radiation dose that the sample has been exposed to.

In addition to radiation from the surrounding sediment, OSL samples are affected by a cosmic dose rate, which reduces as the amount of sediment the sample is buried under increases.

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glacial sandars (or outwash plains) and proglacial deltas are likely to have well bleached sediments.

When these quartz or feldspar minerals are exposed to the ionising radiation emitted by the radioactive isotopes in zircons, electrons within the crystals migrate and become trapped in their crystal structure.

Optical dating, often referred to as optically stimulated luminescence OSL dating, has been a significant geochronological tool in Quaternary research.… continue reading »

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