Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/9568
AuthorsDaskalopoulou, K.* 
Sergio Calabrese, S.* 
Milazzo, S.* 
Brusca, L.* 
Bellomo, S.* 
D'Alessandro, W.* 
Kyriakopoulos, K.* 
Tassi, F.* 
Parello, F.* 
TitleTrace elements mobility in soils from the hydrothermal area of Nisyros (Greece)
Issue Date2014
Series/Report no.fast track 2/ 57 (2014)
DOI10.4401/ag-6623
URIhttp://hdl.handle.net/2122/9568
KeywordsTrace elements
Hydrothermal alteration
Subject Classification01. Atmosphere::01.01. Atmosphere::01.01.07. Volcanic effects 
03. Hydrosphere::03.04. Chemical and biological::03.04.06. Hydrothermal systems 
04. Solid Earth::04.02. Exploration geophysics::04.02.01. Geochemical exploration 
04. Solid Earth::04.04. Geology::04.04.12. Fluid Geochemistry 
AbstractNisyros Island, Greece, is a stratovolcano known for its intense hydrothermal activity. On June 2013, during a multidisciplinary field campaign, soil samples were collected in the caldera area to determinate the main mineralogical assemblages and to investigate the distribution of trace element concentrations and the possible relationship to the contribution of fluids of deep origin. Soil samples were analysed with XRD and for the chemical composition of their leachable (deionized water) and pseudo total (microwave digestion) fraction both for major and trace elements. The results allow to divide the samples in 2 groups: Lakki Plain and Stefanos Crater. The latter, where a fumarolic area is located, shows a mineralogical assemblage dominated by phases typical of hydrothermal alteration. Their very low pH values (1.9 – 3.4) show the strong impact of fumarolic gases which are probably also the cause of strong enrichments in these soils of highly volatile elements like S, As, Se, Bi, Sb, Tl and Te.
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