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Estimation of inorganic carbon sources in groundwater recharge by inverse geochemical modelling (Carboniferous aquifer, the Intra-Sudetic Basin, SW Poland)

Dobrzynski D.

Geological Quarterly

2008

Vol. 52, No 2

191-191

Geochemical modelling was applied in quantification of chemical reactions responsible for the chemistry of groundwater in the recharge zone of a Carboniferous aquifer (the Sudety Mts., SW Poland). Calculation of the contribution of dissolved in organic carbon (DIC) sources allowed estimation of the initial radiocarbon activity in the recharge to groundwater. The 14C activity calculated upon the results of geochemical modelling is consistent with the 14C activity measured in groundwater. Geochemical modelling can be applied for estimation of the initial 14C activity in recharge water as well as the 14C activity in groundwater along the flow path. Methods of geochemical modelling have an advantage over empirical methods because they combine the effects of various chemical reactions occurring in the geochemical system.