The sand and gravel resources of the country around Aldermaston, Berkshire : description of parts of 1:25,000 resource sheets SU 56 and SU 66

The geological maps of the Institute of Geological Sciences, pre-existing borehole information, and 64 boreholes drilled for the Mineral Assessment Unit form the basis of the assessment of sand and gravel resources in the Aldermaston area, Berkshire. All deposits in the area which 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 six resource blocks containing between 3.8 and 14.9 km2 of potentially workable sand and gravel. For the blocks assessed statistically the geology of the deposits is described and the mineral-bearing area, the mean thickness of overburden and mineral, and the mean grading of the mineral are stated. Detailed borehole data are given. The geology, the position of the boreholes and the outlines of the resource blocks are shown on the accompanying map.