Luminescence dating wiki


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Most luminescence dating methods rely on the assumption that the mineral grains were sufficiently "bleached" at the time of the event being dated.

The radiation causes charge to remain within the grains in structurally unstable "electron traps".

The trapped charge accumulates over time at a rate determined by the amount of background radiation at the location where the sample was buried.

High energy radiation creates electronic excited states in crystalline materials.

In some materials, these states are trapped, or arrested, for extended periods of time by localized defects, or imperfections, in the lattice interrupting the normal intermolecular or inter-atomic interactions in the crystal lattice.

Luminescence dating refers to a group of methods of determining how long ago mineral grains were last exposed to sunlight or sufficient heating.

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