Abstract
Mössbauer spectra for 15 spinels separated from sub-oceanic, upper-mantle tectonic peridotites from the Ibra, Hatta and Dibba areas, Semail massif, were measured in an effort to determine their Fe3+ contents. The determined Fe3+ fractions were used to calculate oxygen fugacity. The average Δfo2 (relative to FMQ) is -1.11 ± 0.4 log-units. This is in agreement with that reported for abyssal peridotites (-0.9 ± 0.7 log units relative to FMQ) and the erogenic massif of Ronda (-1.1 ± 0.7 relative to FMQ), and in contrast to the oxidized continental xenolith (+0.24 ± 0.5 relative to FMQ).
Original language | English |
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Pages (from-to) | 153-163 |
Number of pages | 11 |
Journal | European Journal of Mineralogy |
Volume | 8 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1996 |
Externally published | Yes |
Keywords
- Oman
- Oxygen fugacity
- Semail massif
- Thermobarometry
- United Arab Emirates
ASJC Scopus subject areas
- Geochemistry and Petrology