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Γεωχημική χαρτογράφηση πιθανών γεωθερμικών ταμιευτήρων χαμηλής ενθαλπίας στη Νότιο Μεσσαρά, Κρήτη

Kamitsi Dimitra

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Year 2021
Type of Item Master Thesis
Bibliographic Citation Δήμητρα Καμίτση, "Γεωχημική χαρτογράφηση πιθανών γεωθερμικών ταμιευτήρων χαμηλής ενθαλπίας στη Νότιο Μεσσαρά, Κρήτη", Μεταπτυχιακή Διατριβή, Σχολή Μηχανικών Ορυκτών Πόρων, Πολυτεχνείο Κρήτης, Χανιά, Ελλάς, 2021
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The purpose of this dissertation is mainly the hydrochemical study of hypothermic waters pumped from irrigation boreholes in the wider area of the Messara basin, around the settlements of Platanos, Peri, Alithini, Apesokari and Plora. As part of this work, water samples were collected from eighteen (18) wells for two consecutive seasons, March and September 2018. The water samples were analyzed for their content in main elements and trace elements. Using hydrochemical diagrams and calculating ion ratios as well as other parameters, it was found that the waters analyzed are calcium-magnesium with respect to cations and of mixed composition with respect to anions mainly carbonate-sulfate-chloride. Utilizing data from on-site water temperature measurements combined with calculated water temperatures in depth using selected geothermometers, two-dimensional and three-dimensional maps of the spatial distribution of water temperature were constructed, from which it emerged that the wells that pump the warmest water in the area have been drilled in formations of the Pindos Zone, around the villages of Peri, Platano and Alithini. The wells that pump less warm water have been drilled in formations of the Tripoli Zone and are located around the villages of Apesokari and Plora. It was also observed that the studied boreholes have been drilled near two known faults in the NW-SE and SW-NE direction, respectively.The above data are the first synthetics that can support the existence of a possible low-enthalpy geothermal reservoir of local interest in the area.

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