Journal article
Progress in linking accessory mineral growth and breakdown to major mineral evolution in metamorphic rocks: A thermodynamic approach in the Na 2O-CaO-K 2O-FeO-MgO-Al 2O 3-SiO 2-H 2O-TiO 2-ZrO 2 system
DE Kelsey, R Powell
Journal of Metamorphic Geology | WILEY | Published : 2011
Abstract
Activity-composition (a-x) models have been generated for zirconium-bearing haplogranitic silicate melt and garnet from experimental data on zircon dissolution and natural rock data, respectively. Additionally including the recently proposed a-x model for Zr-bearing rutile [Tomkins et al., Journal of Metamorphic Geology25 (2007) 401], calculated phase diagrams that explicitly include ZrO 2 in the bulk composition predict the growth and dissolution of zircon at sub- and supra-solidus conditions. This occurs within the context of the evolution of major metamorphic minerals and mineral assemblages in pressure-temperature-composition space for a metapelitic rock composition. The stability of zir..
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Funding Acknowledgements
This work was funded by ARC DP0665094 to D.E.K., and ARC DP0451770 and DP0987731 to R.P. We thank F. Spear and S. Harley for constructive reviews and R. White for editorial handling. This work was originally presented in part as a keynote presentation at the 2009 Granulites and Granulites conference in the Hruba Skala Chateau, Czech Republic. D.E.K. thanks the conference organisers for the invitation to present as well as the University of Adelaide for travel assistance (Overseas Conference Scheme). This is TRaX contribution #116.