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Hydrogeology Research Group, British Geological Survey, , Maclean Building, Crowmarsh Gifford, Wallingford, Oxfordshire OX10 8BB, UK
Old Red Sandstone, Permian, Triassic and Quaternary deposits form a coastal aquifer to the south of the Moray Firth between Elgin and Forres. Evidence from exploratory drilling, borehole geophysics and hydrogeochemistry show that the aquifer is a complex layered system containing young slightly mineralized water in cracks and joints, older more mineralized water in intergranular storage and mineralized water confined at depth by clay horizons.