Email this article A new model of sulfur isotopes behavior in the modern submarine hydrothermal systems
- Authors: Dubinina E.O.1, Bortnikov N.S.1
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Affiliations:
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
- Issue: Vol 486, No 5 (2019)
- Pages: 593-597
- Section: Geochemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/14495
- DOI: https://doi.org/10.31857/S0869-56524865593-597
- ID: 14495
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Abstract
A model of sulfur isotope distribution at modern submarine hydrothermal systems is proposed. It is assumed that thermogenic sulfate reduction at the water-rock interaction zone takes place under closed system conditions respectively to fluid phase. As a result, the Rayleigh exhaustion with respect to the 32S isotope arises in the fluid. The model also takes into account the simultaneous extraction of reduced sulfur from surrounding rocks. The calculated fraction of extracted sulfur at the total content of reduced sulfur in the fluid varies from 0.15 to 0.06 for submarine systems associated with tholeiitic basalts and peridotites, respectively. The model application to published data can explain the well-known contradictions that have arisen during the study of the sulfur isotope composition of sulfides from world Ocean deep-sea edifices.
About the authors
E. O. Dubinina
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Author for correspondence.
Email: elenadelta@gmail.com
Russian Federation, 35, Staromonetny, Moscow, 119017
N. S. Bortnikov
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Email: elenadelta@gmail.com
Academician of the Russian Academy of Sciences
Russian Federation, 35, Staromonetny, Moscow, 119017References
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