Other
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982gecoa..46..167a&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 46, Feb. 1982, p. 167-177.
Other
3
Chemical Analysis, Flow Distribution, Gas Composition, Geothermal Resources, Magma, Chemical Reactions, Hydrogen Sulfide, Pyrites, Silicon Dioxide, Sulfur Dioxides
Scientific paper
Gas composition and silica concentrations of well fluids are used in conjunction with pressure, temperature and enthalpy data to obtain a model of the drilled part of the Krafla geothermal field (Northeast Iceland). A magma chamber is located at 3-8 km depth under the field. Magmatic gases emanate from the chamber and travel via a channel reaching the surface at the Hveragil eruptive fissure. The composition of the gases is apparently modified on the way, in that sulphur, which presumably is in the form of sulphur dioxide to begin with, is removed, and what remains is in the form of hydrogen sulphide. It is suggested that the major removal mechanism is the deposition of pyrite and pyrrhotite during the passage of the gases through the hydrothermal system.
Armannsson H.
Gislason G.
Hauksson T.
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