From the Beeb: New method used to date cave art.
Experts from the University of Bristol are to attempt to accurately date prehistoric caves.
The team from the Department of Archaeology and Anthropology travelled to northern Spain to collect samples of paintings from more than 20 caves.
They will use a new method, based on the radioactive decay of uranium, to date the paintings. [continue]
It will be particularly interesting if the researchers discover that there is a date range for the original, older paintings and then newer dates for “touch up” or “editing” or some kind of re-use of the caves.