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The error limits on the dates obtained are typically in the range of 5 to 10%.

However, some environmental factors such as moisture can affect the accumulation of this energy.

Two forms of luminescence dating are used by archaeologists to date events in the past: thermoluminescence (TL) or thermally stimulated luminescence (TSL), which measures energy emitted after an object has been exposed to temperatures between 400 and 500°C; and optically stimulated luminescence (OSL), which measures energy emitted after an object has been exposed to daylight.

To put it simply, certain minerals (quartz, feldspar, and calcite), store energy from the sun at a known rate.

He began his education in Florida where he received his Ph. Rink returned to Florida several years ago to work on the Salt Springs site near Palatka. Rink and his associates specialize in a special type of geochronology called Optical Stimulated Luminescence—or OSL for short–that is used to date archaeological sites and geological features.

He has since worked at sites around the state including several shell middens on St. OSL dating is a system of sampling and measuring the amount of energy that is trapped within soils.

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