Abstract
Statistical and thermodynamic analysis of hydrogeochemical information on Sr accumulation in the waters of Carboniferous deposits in the Moscow artesian basin indicates that Sr concentration increases mostly with increasing salinity of the aqueous solution and its Mg and sulfate contents. The highest Sr concentrations are 8–10 mg/l, and Sr accumulation in groundwaters is constrained by the precipitation of strontiantie in the system aqueous solution + dolomite + calcite + strontianite. An increase in Sr concentrations in the Carboniferous waters is symbate with the accumulation of F, and the accumulation of Sr (as well as F) is largely controlled by two factors: a change in the hydrogeochemical type of the groundwaters toward its transition and an overprinted process of the slowing of water filtration from the recharge area of the aquifers (where the Carboniferous deposits are exposed at the surface) down the dips of the water-hosting strata.
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