Wroxeter has had many geophysical surveys done over it. Have a look at the
geophysics data base on the ADS web site to see what is listed there(sorry i
have not got the url to hand). I know GSB (aka Time Teams geofiz) have done
some work at Wroxeter and a number of other Roman sites.
Its not quite correct to say that a magnetometer only looks 1m deep. It
depends on what type of magnetometer is used and in what circumstances.
magnetometers are also used by geologists and they are usually interested in
features much deeper than 1m. The Fluxgate gradiometer (such as the FM36)
which is commonly used for archaeological work however works at relitively
shallow depths. As a rule of thumb this is usually considered to be anything
from 0.5 - 1.5 m deep, but the nature of any buried anomoly will influence
how deep the instrument "looks" and so the rule of thumb can be very
NAMHO Conference 2001-MINING HISTORY and BEYOND
Lead Mining in the Yorkshire Dales
The Industrial Archaeology of Halifax
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