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This is an informational tour in which students gain a basic understanding of geologic time, the evidence for events in Earth’s history, relative and absolute dating techniques, and the significance of the Geologic Time Scale.

Evolution places severe demands upon fossils used to support it.

Absolute dating provides a numerical age or range in contrast with relative dating which places events in order without any measure of the age between events.

In archaeology, absolute dating is usually based on the physical, chemical, and life properties of the materials of artifacts, buildings, or other items that have been modified by humans and by historical associations with materials with known dates (coins and written history).

Absolute dating is the process of determining an age on a specified chronology in archaeology and geology.

Some scientists prefer the terms chronometric or calendar dating, as use of the word "absolute" implies an unwarranted certainty of accuracy.

Popular presentations of human evolution show a rather smooth transition of fossils leading to modern humans.

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You will be notified by email when the transcript and captions are available. Please contact [email protected] you have any questions about this request.

There are clearly domains in the dentine of the tooth where the Th/U ratios indicate continuing U-accumulation.

These domains could be extracted and used for open-system U-series dating Firstly, the diffusion–adsorption model could be applied for open-system U-series dating of bones well beyond one million years.