The sand and gravel resources of the country north-west of Scunthorpe, Humberside : description of 1:25,000 resource sheet SE 81

The geological maps of the Institute of Geological Sciences, pre-existing borehole information, and 63 boreholes drilled for the Mineral Assessment Unit form the basis of the assessment of sand and gravel resources of the country north-west of Scunthorpe, Humberside. All the floodplain 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 1:25000 map is divided into six resource blocks containing between 7.1 and 13.5 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.