Experimental modeling of the interaction of subducted carbonates and sulfur with mantle silicates
| Autor: | Yu. V. Bataleva, E. V. Zdrokov, Yu. N. Palyanov, Yu. M. Borzdov, Nikolay V. Sobolev |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Olivine 010504 meteorology & atmospheric sciences Sulfide Analytical chemistry chemistry.chemical_element Mineralogy engineering.material 010502 geochemistry & geophysics 01 natural sciences Sulfur Mantle (geology) Silicate chemistry.chemical_compound chemistry Earth and Planetary Sciences (miscellaneous) engineering General Earth and Planetary Sciences Carbonate Pyrite Geology 0105 earth and related environmental sciences Magnesite |
| Zdroj: | Doklady Earth Sciences. 470:953-956 |
| ISSN: | 1531-8354 1028-334X |
| DOI: | 10.1134/s1028334x16090105 |
| Popis: | Experimental studies in the system Fe,Ni–olivine–carbonate–S (P = 6.3 GPa, T = 1050–1550°C, t = 40–60 h) aimed at modeling of the interaction of subducted carbonates and sulfur with rocks of the silicate mantle and at investigation of the likely mechanism of the formation of mantle sulfides were performed. It is shown that an association of olivine + orthopyroxene + magnesite + pyrite coexisting with a sulfur melt/fluid with dissolved Fe, Ni, and O is formed at T ≤ 1250°C. An association of low-Fe olivine, orthopyroxene, and magnesite and two immiscible melts of the carbonate and S–Fe–Ni–O compositions are formed at T ≥ 1350°C. It is shown that the reduced S-bearing fluids may transform silicates and carbonates, extract metals from the solid-phase matrix, and provide conditions for generation of sulfide melts. |
| Databáze: | OpenAIRE |
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