Trace elements mobility in soils from the active hydrothermal area of Nisyros (Greece)

Silvia Milazzo, Francesco Parello, Sergio Calabrese, Kyriaki Daskalopoulou, Kyriaki Daskalopoulou, Walter D’Alessandro, Franco Tassi, Sergio Bellomo, Konstantinos Kyriakopoulos, Lorenzo Brusca

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Abstract

Nisyros Island, Greece, is a stratovolcano known for its intense hydrothermal activity. On June 2013, during amultidisciplinary field campaign, soil samples were collected in the caldera area to determinate the mainmineralogical assemblages and to investigate the distribution of trace element concentrations and the possiblerelationship to the contribution of fluids of deep origin. Soil samples were analysed with XRD and for the chemicalcomposition 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.
Lingua originaleEnglish
pagine (da-a)1-6
Numero di pagine6
RivistaANNALS OF GEOPHYSICS
Volume57
Stato di pubblicazionePublished - 2014

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All Science Journal Classification (ASJC) codes

  • Geophysics

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Milazzo, S., Parello, F., Calabrese, S., Daskalopoulou, K., Daskalopoulou, K., D’Alessandro, W., Tassi, F., Bellomo, S., Kyriakopoulos, K., & Brusca, L. (2014). Trace elements mobility in soils from the active hydrothermal area of Nisyros (Greece). ANNALS OF GEOPHYSICS, 57, 1-6.