Abstract
Fluid inclusions in the leucosomes of Wadi Feiran migmatites showed that CO 2, H2O and (H2O-CO2) fluids were likely to have been present when partial melting began in these rocks. Low salinity, aqueous fluid, to a lesser extent, CO2-rich fluids are the most abundant fluids. The present study suggests that high-density CO 2 inclusions were formed at the earliest stage, while H2O inclusions were formed at the late stage. In an intermediate stage, low-density CO2 and H2O, CO2 inclusions were formed. At the early stage of uplift and during melt crystallization, the CO 2-bearing vapour was trapped at grain boundaries. At the late stage of uplift, H2O released at the time of crystallization of the melt was trapped as inclusions.
Original language | English |
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Pages (from-to) | 358-363 |
Number of pages | 6 |
Journal | Chinese Journal of Geochemistry |
Volume | 28 |
Issue number | 4 |
DOIs | |
Publication status | Published - Jan 1 2009 |
Keywords
- CO
- Fluid inclusion
- HO
- Migmatite
- Wadi Feiran
ASJC Scopus subject areas
- Geochemistry and Petrology