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Geological and hydrochemical study of samples of sulphurous waters from the area of southern Mesara

Chatzigeorgiou Konstantinos

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Summary

The primary issue of this dissertation is the verification of the origin of the high content in sulfur ions in the groundwater of the settlement of Vasiliki. With some sample’s chemical analyses exceeding 2.000 mg/L of sulfur ions, the question arises as to whether the possibility of utilization of these waters for medicinal purpose. At the same time, this dissertation aims to enrich the existing knowledge about the geological character of the hydrological basin of southern Messara, which has become a source of great research interest and numerous dissertations in the last twenty years. As part of this dissertation, water samples were collected from eight boreholes for two time periods, May of 2020 and September of 2021. The samples were analyzed in terms of their physical parameters, main and trace elements. Based on the chemical analysis and the resulting hydrochemical diagrams, it was possible to establish that the water samples that were analyzed are mainly of calcium type in accordance to their cations and of sulphate type in accordance to their anions, their hydrochemical facies is mainly Ca-SO4 and therefore are tightly associated with evaporites and marly limestone of Finikia and Agia Galini formations. In addition to the presentation of physicochemical data of measurements, analyses and calculations, there is also a discussion about the possibility of utilizing these waters for purposes other than their main, which is irrigation.

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