Buried ?

[grahamc184]

Anyone who has seen Tony Robsinson in Channel 4's 'Time Team' will have seen old roman ruins' etc buried under about 6 inches orabout 4 foot of earth!

How come it vaires so much I would have thought taht if the ruins were from about the same time period, they would have been under the same depth of earth.

Any answers?

[Littlejohn]

The best way to visualize this is to think of what's happening around our coast line (seen the programme "Coast").
In some places, particually on the east coast coastal erosion is taking big chunks out of our coast line, in other places it is actually adding to it. The reasons are not the same what you describe, but the point is that local variations happen all over the place, there can be very many reasons why what happens in one locality does not happen in an other. For example farming methods over the centuries - has the land often been ploughed or always
left for grazing?