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Dating with carbon-14


A natural nuclear reactor

A nuclear fission reactor was operating on Earth at least two billion years ago. Mike Follows looks at the evidence it left behind

An abandoned uranium mine in Australia

The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.

Analysis of uranium ore samples detected unusual abundances of isotopes. Calculations involving radioactive half-lives help to explain how a natural nuclear fission reactor could have accounted for the results.

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Dating with carbon-14

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