Chemical characterization of the thermal springs along the South Aegean volcanic arc and Ikaria island
The south Aegean volcanic arc and Ikaria island are characterised by the presence of many thermal springs. Hydrochemical data from 46 springs were used to get insight on their water quality. Highest temperatures were recorded in Ikaria (58.3 °C), Santorini (50 °C) and Milos (43.7 °C). There is a wide range of major ions’ concentration but the predominant water type is Na-Cl. The composition of waters is mainly influenced by seawater intrusion and secondly by mixing with deep hydrothermal and shallow meteoric waters. The trace elements’ concentration is mainly controlled by high temperature dissolution of primary volcanic minerals and precipitation of secondary solid phases. Factor analysis explains 90% of the total compositional variance with a five factor model.
KeywordsSeawater Intrusion Thermal Water Thermal Spring Geothermal Field Geothermal Fluid
Unable to display preview. Download preview PDF.
- Appelo C, Postma D (1994) Geochemistry, groundwater and pollution. BalkemaGoogle Scholar
- D΄Amore F, Panichi, C (1987) Geochemistry in geothermal exploration. In: Economides M and Ungemach P (eds). Applied geothermics, Wiley & Sons, New YorkGoogle Scholar
- D' Alessandro W, Brusca L, Kyriakopoulos K, Michas G, Papadakis G (2008) Methana, the westernmost active volcanic system of the south Aegean arc (Greece): Insight from fluids geochemistry. Journal of Volcanology and Geothermal Research, DOI:10.1016/jjvolgeores.2008.09.014 , Vol. 178, 818-828Google Scholar
- Fytikas Μ (1977) Geological and geothermal investigation of Milos. PhD thesis, Dept. of Geology, Aristotle University of ThessalonikiGoogle Scholar
- Hem JD (1985) Study and interpretation chemical characteristics of natural water. U.S. Geol. Survey. Water Supply, Paper No 2254Google Scholar
- Κyriakopoulos GΚ (1998) K-Ar & Rb-Sr isotopic data of white micas from Milos island geothermal boreholes field. Anal. Geol. Pays Hell. 38, 37-48Google Scholar
- McKenzie D, (1972) Active tectonics of the Mediterranean region. Geoph. J. R. Astr. Soc., 30, 55-71Google Scholar
- Megalovasilis P (2005) Geochemical investigation of sediments of bottom and regions of Aegean volcanic arc. PhD thesis, University of AthensGoogle Scholar
- Nicholson K (1993) Geothermal fluids-Chemistry and exploration techniques. Springer Verlag. BerlinGoogle Scholar