Phase relations of osumilite and dehydration melting in pelitic rocks: a simple thermodynamic model for the KFMASH system
Article Abstract:
A thermodynamic model, based on the KFMASH system, facilitates the study of the phase relations of osumilite and the dehydration melting in pelites. The method accurately reproduces the univariant and invariant reactions determined by experimental studies. It also allows the monitoring of phase compositions as a function of pressure, temperature and equilibrium phase assemblage for any bulk composition. Case studies of the occurrence of the metamorphic osumilite in Nain, Namaqualand, and Rogaland demonstrate the efficiency of the model.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Partial melting and phase relations in high-grade metapelites: an experimental petrogenetic grid in the KFMASH system
Article Abstract:
A petrogenetic grid for studying the metapelites of the KFMASH system extending from 840-1000 degrees C and 5.0-12.5 kbar is given. The grid is a simple-system reference describing the changes in the phase equilibrium caused by different minor components. The grid contains pressure-temperature psuedosections which can be used to determine univariant reactions, divariant reactions, and stability limits for a bulk rock composition from which a possible phase assembly path may be deduced.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Fluid inclusions in granulite-facies metapelites of the Hercynian ancient lower crust of the Serre, Calabria, southern Italy
Article Abstract:
Fluid inclusions in granulite-facies metapelites of Calabria, Italy are investigated. Results show that fluid inclusions in cordierite, garnet and sillimanite have a CO(2)-rich composition. Moreover, a CO(2)-rich fluid phase is introduced in the structural channel as well as trapped in fluid inclusions in the cordierite during and/or just after crystallization. Lastly, the lower crustal fluid regime in Calabria is heterogeneous and locally controlled.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: P-T paths from anatectic pelites. Uncertainties in differential thermodynamic (Gibbs' method) P-T paths. Modeling of prograde mineral sigma18O changes in metamorphic systems
- Abstracts: Theoretical studies of the alteration of spodumene, petalite, eucryptite and pollucite in granitic pegmatites: exchange reactions with alkali feldspars
- Abstracts: Extension of stable continental lithosphere and the initiation of lithospheric scale faults. Intraplate deformation and basin formation during the Tertiary within the northern Iberian plate: origin and evolution of the Almazan Basin
- Abstracts: Ridge axis deformation and coeval melt migration within layer 3 gabbros: evidence from the Lizard Complex, U.K
- Abstracts: PGE in solid solution in base metal sulfides and the down-temperature equilibration history of Merensky ores. Magnetic metasomatism and formation of the Merensky reef, Bushveld Complex