Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece

Abstract Hydrochemical and isotopic characteristics of fluids from major geothermal fields of middle/low temperature in N/NE Greece are examined [basins: Strymon River (SR), Nestos River Delta (ND), Xanthi–Komotini (XK), Loutros–Feres–Soufli (LFS) and Rhodope Massif]. The geodynamic context is refle...

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Autores principales:	E. Dotsika, P. Dalampakis, E. Spyridonos, G. Diamantopoulos, P. Karalis, M. Tassi, B. Raco, A. Arvanitis, N. Kolios, J. L. Michelot
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10f8156c1d024bbf822f40d4b2083f7f
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spelling	oai:doaj.org-article:10f8156c1d024bbf822f40d4b2083f7f2021-12-02T19:06:40ZChemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece10.1038/s41598-021-95656-62045-2322https://doaj.org/article/10f8156c1d024bbf822f40d4b2083f7f2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95656-6https://doaj.org/toc/2045-2322Abstract Hydrochemical and isotopic characteristics of fluids from major geothermal fields of middle/low temperature in N/NE Greece are examined [basins: Strymon River (SR), Nestos River Delta (ND), Xanthi–Komotini (XK), Loutros–Feres–Soufli (LFS) and Rhodope Massif]. The geodynamic context is reflected to isotopic/chemical composition of fluids, heat flow values and elevated CO2 concentrations in emitted fluids. B and Li are derived from leaching of the geothermal systems hosting rocks. δ18OH2O, δ18OSO4, δ13CCO2 values and chemical compositions of Cl, B and Li of geothermal discharges suggest two distinct source fluids. Fluids in SR exhibit high B/Cl and Li/Cl ratios, suggesting these constituents are derived from associated magmas of intermediate composition (andesitic rocks). Geothermal discharges in LFS exhibit low B/Cl and Li/Cl ratios, implying acid (rhyolitic) magmatism. δ13CCO2 and CO2/(CO2 + 105He) ratios in the west part, suggest fluids affected by addition of volatiles released from subducted marine sediments. For the eastern systems, these ratios suggest gas encountered in systems issued from mixing of crustal and mantle-derived volatiles. Isotopic geothermometers reflect, for the same direction, equilibrium processes more (LFS, XK) or less (SR) pronounced and discriminate the geothermal field from low to middle [SR, ND (Erasmio)] and middle to high enthalpy [ND (Eratino), LFS, XK].E. DotsikaP. DalampakisE. SpyridonosG. DiamantopoulosP. KaralisM. TassiB. RacoA. ArvanitisN. KoliosJ. L. MichelotNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q E. Dotsika P. Dalampakis E. Spyridonos G. Diamantopoulos P. Karalis M. Tassi B. Raco A. Arvanitis N. Kolios J. L. Michelot Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece
description	Abstract Hydrochemical and isotopic characteristics of fluids from major geothermal fields of middle/low temperature in N/NE Greece are examined [basins: Strymon River (SR), Nestos River Delta (ND), Xanthi–Komotini (XK), Loutros–Feres–Soufli (LFS) and Rhodope Massif]. The geodynamic context is reflected to isotopic/chemical composition of fluids, heat flow values and elevated CO2 concentrations in emitted fluids. B and Li are derived from leaching of the geothermal systems hosting rocks. δ18OH2O, δ18OSO4, δ13CCO2 values and chemical compositions of Cl, B and Li of geothermal discharges suggest two distinct source fluids. Fluids in SR exhibit high B/Cl and Li/Cl ratios, suggesting these constituents are derived from associated magmas of intermediate composition (andesitic rocks). Geothermal discharges in LFS exhibit low B/Cl and Li/Cl ratios, implying acid (rhyolitic) magmatism. δ13CCO2 and CO2/(CO2 + 105He) ratios in the west part, suggest fluids affected by addition of volatiles released from subducted marine sediments. For the eastern systems, these ratios suggest gas encountered in systems issued from mixing of crustal and mantle-derived volatiles. Isotopic geothermometers reflect, for the same direction, equilibrium processes more (LFS, XK) or less (SR) pronounced and discriminate the geothermal field from low to middle [SR, ND (Erasmio)] and middle to high enthalpy [ND (Eratino), LFS, XK].
format	article
author	E. Dotsika P. Dalampakis E. Spyridonos G. Diamantopoulos P. Karalis M. Tassi B. Raco A. Arvanitis N. Kolios J. L. Michelot
author_facet	E. Dotsika P. Dalampakis E. Spyridonos G. Diamantopoulos P. Karalis M. Tassi B. Raco A. Arvanitis N. Kolios J. L. Michelot
author_sort	E. Dotsika
title	Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece
title_short	Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece
title_full	Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece
title_fullStr	Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece
title_full_unstemmed	Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece
title_sort	chemical and isotopic characterization of the thermal fluids emerging along the north–northeastern greece
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/10f8156c1d024bbf822f40d4b2083f7f
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Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece

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