The geological maps of the Institute of Geological
Sciences, pre-existing borehole information, and 70 boreholes
drilled for the Industrial Minerals Assessment Unit
form the basis of the assessment of the sand and gravel
resources in the area between Coventry and Rugby,
Warwickshire.
All the deposits in the district that might be potentially
workable for sand and gravel have been investigated
and a simple statistical method has been used to
estimate the volume. The reliability of the volume
estimates is given at the symmetrical 95 per cent
probability level.
The assessed area is divided into six resource blocks,
containing between 10.5 and 19.9 km2 of sand and
gravel. For each block the geology of the deposits is
described, and the mineral-bearing area, the mean thickness
of overburden and mineral and the mean gradings
are stated. Detailed borehole data are also given. The
geology, the position of the boreholes and the outlines of
the resource blocks are shown on the accompanying map
