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Geochemical modelling and isotope studies in the Sherwood Sandstone aquifer, Lagan Valley, Northern Ireland

Cronin, AA and Elliot, T. and Kalin, R M (2000) Geochemical modelling and isotope studies in the Sherwood Sandstone aquifer, Lagan Valley, Northern Ireland. In: Tracers and modelling in hydrogeology. IAHS PUBLICATION . International Association of Hydrological Sciences, Wallingford, pp. 425-431. ISBN 190150221X

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Abstract

The principal aquifer of the Lagan Valley, Northern Ireland, is the Triassic Sherwood Sandstone formation. A detailed hydrogeochemical interpretation has been made of this formation. Correlation of major ion analyses highlights the importance of dedolimitization in the geochemical evolution of the aquifer's water. Results from geochemical modelling and radiocarbon dating have shown the importance both of recharge through the till and of water mixing in the geochemical evolution of the water. Geochemical modelling results differed from previous flow model conclusions, highlighting the importance of considering both techniques in hydrogeological investigations.