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Book Chapter

Hydrochemical modelling as a tool for understanding palaeowaters

By
W. J. M. Van Der Kemp
W. J. M. Van Der Kemp
Institute of Marine and Atmospheric Research, Faculty of Physics & Astronomy, UtrechtUniversity, PO Box 80005, NL-3508 TA, The Netherlands (email: kemw@phys.uu.nl)
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C. A. J. Appelo
C. A. J. Appelo
Hydrochemical Consultant, Valeriusstraat 11, NL-1071 MB Amsterdam, The Netherlands
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M. T. Condesso De Melo
M. T. Condesso De Melo
Department of Geoscience, Aveiro University, 3800 Aveiro, Portugal
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I. Gaus
I. Gaus
British Geological Survey, Crowmarsh Gifford, Wallingford, Oxfordshire, OXIO 8BB, UK
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C. J. Milne
C. J. Milne
British Geological Survey, Crowmarsh Gifford, Wallingford, Oxfordshire, OXIO 8BB, UK
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K. Walraevens
K. Walraevens
Laboratory for Applied Geology and Hydrogeology, University of Gent, Krijgslaan 281,B-9000 Gent, Belgium
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Published:
January 01, 2001

Abstract

Hydrogeochemical modelling was used to interpret water-sample analyses of three European aquifers: the East Midlands Triassic Sandstone (UK), the Tertiary Ledo-Paniselian (Belgium) and the Aveiro Cretaceous aquifer (Portugal). Soil CO2 pressures at recharge, derived from inverse chemical modelling, correlate well with δ18O of the water. Higher soil CO2 pressures correspond to less negative δ18O of the recharge water, indicating higher recharge temperatures. This trend is confirmed by noble gas temperatures from the East Midlands aquifer. Cation exchange and carbonate reactions were the most important chemical processes that contributed to the groundwater composition of all three aquifers. Transport modelling of the water quality of the Ledo-Paniselian aquifer confirmed the importance of cation exchange and elucidated that recharge of this aquifer occurs through preferential pathways.

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Geological Society, London, Special Publications

Palaeowaters in Coastal Europe: Evolution of Groundwater since the Late Pleistocene

W. M. Edmunds
W. M. Edmunds
British Geological Survey, Wallingford, UK
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C. J. Milne
C. J. Milne
British Geological Survey, Wallingford, UK
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Geological Society of London
Volume
189
ISBN electronic:
9781862394377
Publication date:
January 01, 2001

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