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Ghabayen, S.; McKee, M.; Kemblowski, M. |
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Ionic and Isotopic Ratios for Identification of Salinity Sources and Missing Data in the Gaza Aquifer |
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2006 |
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Journal of Hydrology |
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318 |
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360-373 |
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THL @ christoph.kuells @ article |
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87 |
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Mihajlidi-Zelić, A.; Deršek-Timotić, I.; Relić, D.; Popović, A.; Đorđević, D. |
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Contribution of marine and continental aerosols to the content of major ions in the precipitation of the central Mediterranean |
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2006 |
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Science of the total environment |
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370 |
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2-3 |
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441-451 |
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Elsevier |
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0048-9697 |
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THL @ luqianxue.zhang @ Mihajlidi-Zelić2006 |
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60 |
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Demirel, Z.; Güler, C. |
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Hydrogeochemical evolution of groundwater in a Mediterranean coastal aquifer, Mersin-Erdemli basin (Turkey) |
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Journal Article |
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2006 |
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Environmental geology |
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49 |
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3 |
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477-487 |
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In this study, hydrogeologic and hydrochemical information from the Mersin-Erdemli groundwater system were integrated and used to determine the main factors and mechanisms controlling the chemistry of groundwaters in the area and anthropogenic factors
presently affecting them. The PHREEQC geochemical modeling demonstrated that relatively few
phases are required to derive water chemistry in the area. In a broad sense, the reactions responsible for the hydrochemical evolution in the area fall into four categories: (1)
silicate weathering reactions; (2) dissolution of salts; (3) precipitation of calcite, amorphous silica and kaolinite; (4) ion exchange. As determined by multivariate statistical
analysis, anthropogenic factors show seasonality in the area where most contaminated waters related to fertilizer and fungicide applications that occur during early summer season. |
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THL @ luqianxue.zhang @ demirel2006hydrogeochemical |
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63 |
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Pacheco, F.A.L.; Szocs, T. |
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“Dedolomitization reactions” driven by anthropogenic activity on loessy sediments, SW Hungary |
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2006 |
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Applied Geochemistry |
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21 |
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4 |
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614-631 |
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In the Szigetvár area, SW Hungary, shallow groundwaters draining upper Pleistocene loess and Holocene sediments are considerably contaminated by domestic effluents and leachates of farmland fertilizers. The loess contains calcite and dolomite, but gypsum was not recognized in these sediments. The anthropogenic inputs contain significant amounts of Ca and SO4. The Ca from these anthropogenic inputs is promoting calcite growth, with concomitant consumption of carbonate alkalinity, undersaturation of the system with respect to dolomite, and dolomite dissolution; in brief, is driving “dedolomitization reactions”. Geochemical arguments supporting the occurrence of “dedolomitization reactions” in the area are provided by the results of mass balance and thermodynamic analyses. The mass balances predicted the weather sequence dolomite\textgreatercalcite\textgreaterplagioclase\textgreaterK-feldspar, at odds with widely accepted sequences of weatherability where calcite is the first mineral in the weathering sequence. The exchange between calcite and dolomite can be a side effect of “dedolomitization reactions” because they cause precipitation of calcite. The thermodynamic prerequisites for “dedolomitization reactions” are satisfied by most local groundwaters (70%) since they are supersaturated (or in equilibrium) with respect to calcite, undersaturated (or in equilibrium) with respect to dolomite, and undersaturated with respect to gypsum. The Ca vs. SO4 and Mg vs. SO4 trends are also compatible with homologous trends resulting from “dedolomitization reactions”. |
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0883-2927 |
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THL @ christoph.kuells @ Pacheco2006 |
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35 |
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