The sand and gravel resources of the country between Mildenhall and Barrow, Suffolk : description of 1:25,000 sheets TL 76, 77 and part of 87

The geological maps of the Institute of Geological
Sciences, pre-existing borehole information, and 144
boreholes drilled for the Industrial Minerals Assessment
Unit form the basis of the assessment of the sand and
gravel resources of the country around Mildenhall and
Barrow, Suffolk.
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 1:25 000 map is divided into eight resource
blocks, containing between 2.8 and 16.5 km 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.