O&S - context stratigraphy

Context stratigraphy is an important dating tool when examinng finds in any location - this graphic is for UK locations. (and ought to have the stone ages under the iron age and on top of the natural subsoil)

[which is why treasure detectorists should be taken out at dawn and made to see the error of their ways - half the value of finds is their context]

Not my Image : fair use and educational purposes.