Evolution of Br/Cl ratios in fumarolic salammoniac from Vulcano (Aeolian Islands,Italy) |
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| Authors: | Nara Coradossi Anna Garavelli Martino Salamida Filippo Vurro |
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| Institution: | (1) Department of Earth Science, University of Florence, Via G. La Pira, 4, I-50121 Florence, Italy, IT;(2) Department of Geomineralogical Science, Via E. Orabona, 4, University of Bari, I-70125 Bari, Italy Fax: +39 80 544 2591, IT;(3) Enel Laboratory, Via B. Buozzi, 35, I-70123 Bari, Italy, IT |
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| Abstract: | Bromine/chlorine ratios in salammoniac samples, collected from 1983 to 1994 at the Fossa crater fumaroles of Vulcano (Aeolian
Islands), were determined. The data obtained in this work have been compared to those obtained by Coradossi et al. (1985)
in order to carry out a systematic study of the Br/Cl ratio variations since 1977. Br/Cl ratios range from 0.04 to 0.29. The
Br/Cl ratio variations observed have been interpreted as the result of different contributions among deep and shallow components
feeding the fumarolic fluids of Vulcano. The Br/Cl increases, which occurred from 1977 to 1979, in 1983–1984 and in 1992–1993,
have been connected to an increased input of magmatic gases.
Received: 10 November 1995 / Accepted: 12 July 1996 |
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| Keywords: | Sublimates Salammoniac Fumarolic fluids Br content Vulcano Island |
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