Fluorine and chlorine behavior in chlorine-rich volcanic rocks from White Island, New Zealand

Plot of water-insoluble chlorine against fluorine in the volcanic ejecta on White Island volcano. Those paralava bombs show extraordinarily high abundances of chlorine. The chlorine and fluorine in the paralava bombs are mainly accreted by the hydrothermal system. [Display omitted] ► Extraordinarily...

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Bibliographic Details
Published in:Journal of fluorine chemistry 2011-12, Vol.132 (12), p.1182-1187
Main Authors: Anazawa, Katsuro, Peter Wood, C., Browne, Patrick R.L.
Format: Article
Language:English
Subjects:
Chlorine
Fluid dynamics
Fluid flow
Fluids
Fluorine
Hydrothermal system
Ion chromatography
Islands
Paralava
Rocks
Volcanic rock
Volcanoes
White Island
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Summary:Plot of water-insoluble chlorine against fluorine in the volcanic ejecta on White Island volcano. Those paralava bombs show extraordinarily high abundances of chlorine. The chlorine and fluorine in the paralava bombs are mainly accreted by the hydrothermal system. [Display omitted] ► Extraordinarily high chlorine-bearing volcanic bombs were erupted from White Island volcano on January 25, 1987. ► Those paralavas contain glass with over 1.0 wt.% and up to 1.7% of chlorine. ► The F/Cl ratios and their relationship with other constituents show that the fluorine and chlorine in the bombs was derived from hydrothermal fluid. Extraordinarily high chlorine-bearing volcanic bombs were erupted from White Island volcano on January 25, 1987. The concentrations of fluorine and chlorine were measured in these paralava bombs and their likely parent rocks. The paralavas contain glass with over 1.0 wt.% and up to 1.7% of chlorine. The F/Cl ratios and their relationship with other constituents show that the fluorine and chlorine in the bombs were derived from hydrothermal fluid, most likely concentrated brine in an active Crater Pool.
ISSN:0022-1139
1873-3328
DOI:10.1016/j.jfluchem.2011.07.031