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Exploratorium

Exploratorium: Chaco Canyon: Observation: How Old Is It?

For Students 9th - 10th
How is time read on the stone of the Chaco Canyon? Find out systems geologists have for dating rocks and fossils.
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Other

Atominstitut Der Osterreichischen Unversitaten: Thermoluminescence Dating [Pdf]

For Students 9th - 10th
This article gives a definition of thermoluminescence and shows examples of how this kind of archaeological dating works.