Age dating of fossils

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When volcanic rocks and minerals are formed, they do not contain fission tracks.The number of tracks increases over time at a rate that depends on the uranium content.During this process the pieces of the atom move apart at high speed, causing damage to the rock or mineral.

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Carbon-14 has a half-life of 5,730 ± 40 years, meaning that every 5,700 years or so the object loses half its carbon-14.Discovering Fossils provides a free resource to inform you about this fascinating subject and does not accept any liability for decisions made using this information.Love-hungry teenagers and archaeologists agree: dating is hard.Left: A Discovering Fossils participant holding a rolled foreshore pebble containing several partial ammonite shells, found beneath Black Ven.Right: A Discovering Fossils participant with a pyritised ammonite Left: A worn beach pebble containing jumbled fragments of crinoid stems, found on the foreshore beneath Black Ven.

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