Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6438021 | Geochimica et Cosmochimica Acta | 2015 | 19 Pages |
Abstract
In contrast with previous studies reporting isotope disequilibrium between H2S and chalcopyrite, the δ34S values of chalcopyrite sampled from the inner 1-2 mm of a chimney wall are within ±1Ⱐof δ34S values for H2S in the paired vent fluid, suggesting equilibrium fluid-mineral sulfur isotope exchange at 300-400 °C. Isotopic equilibrium between hydrothermal fluid H2S and precipitating chalcopyrite implies that sulfur isotopes in the chalcopyrite lining across a chimney wall may accurately record past hydrothermal activity.
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Authors
Jill M. McDermott, Shuhei Ono, Margaret K. Tivey, Jeffrey S. Seewald, Wayne C. III, Andrew R. Solow,