Spilsby Sandstone/Kellaways, Oxford Clay and Osgodby formations separation map

Area where aquifer and shale/clay are present	East Lincolnshire
Thickness of intervening strata	About 200 to 500 m
Lithology of intervening strata	Low permeability Kimmeridge Clay Formation and Ampthill Clay Formation (clay)
Other major aquifers in the area	Chalk; Lower Greensand (both above) Oolites; Triassic sandstone; Magnesian limestone; Carboniferous limestone (all below)
Other shales or clays in the area	Lias Group; Bowland Shale Formation; Craven Group (all below)
Aquifer map	Spilsby Sandstone principal aquifer
Shale/clay map	Kellaways, Oxford Clay and Osgodby formations shale/clay unit

Need more information?