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This project is co-ordinated by Historic Environment Projects, Cornwall Council.

It will include the participation of experts from Cardiff, Aberystwyth, Exter and Plymouth Universities as well as the Cornwall and Isles of Scilly Maritime Archaeological Society (CISMAS).

Geological data frequently has difficulties in dating things, even if the analytical techniques can give very precise answers.

In the figure below, the precision is the laboratory probability density curve produced when a material is dated.

Scientists want measurements that are both accurate and precise…

But it is important not to take these ages at face value, and to think critically about whether or not they may be accurate.

However, if the clocks change and you forget to reset your wrist watch, then you have a very precise time but it is not very accurate – you will be an hour early or late for all of your meetings!

See the difference between accurate and precise measurements in the bull’s eye figure below.

This is a problem we regularly encounter in chronostratigraphy.

Analytical techniques are very advanced and precise, but they may be inaccurate.

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