Journal article
A thermodynamic model for silicate melt in CaO-MgO-Al 2O 3-SiO 2 to 50kbar and 1800°C
ECR Green, TJB Holland, R Powell
Journal of Metamorphic Geology | WILEY | Published : 2012
Abstract
A fully thermodynamic model for mafic melt in CaO-MgO-Al 2O 3-SiO 2 (CMAS) has been calibrated, for calculation of melting equilibria in the pressure range 0-50kbar. It is intended as a preliminary step towards a large-system melt model, suitable for exploring melting, melt loss and crystallization processes in a wide range of natural rock compositions. Calibration was performed with attention to the model's behaviour in its compositional subsystems, as a rigorous test of model structure and parameterization. The model is consistent with the latest Holland & Powell thermodynamic data set, and can therefore be used to calculate phase relations in conjunction with the many solid-phase activity..
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Awarded by NERC
Awarded by ARC
Funding Acknowledgements
We thank P. Asimow and an anonymous reviewer for helpful and constructive reviews of this work, and M. Brown for his patience as editor. ECRG acknowledges the support of NERC studentship NER/S/A/2006/14071 and RP of ARC DP0451770 and DP098773. ECRG thanks the University of Melbourne and the University of Mainz (Prof. R. W. White) for their hospitality during the writing of this manuscript.