Chemical mass transfer in magmatic processes IV. A revised and internally consistent thermodynamic model for the interpolation and extrapolation of liquid-solid equilibria in magmatic systems at elevated temperatures and pressures

Ghiorso, Mark S.; Sack, Richard O.

doi:10.1007/s004100050036

Cited by 665 publications

(1,063 citation statements)

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“…Geochemically, they are comparable to the Late Carboniferous basalts in the western Tianshan (Jiang et al, 2012;Zhu et al, 2009). Geochemical modeling using the MELTS program (Ghiorso and Sack, 1995) indicates the magma could crystallize the most primitive mineral compositions (An 72 ) at a relatively high (~1212°C) liquidus temperature and relatively low (FMQ: fayalitemagnetite-quartz) oxygen fugacity, which is consistent with those previously estimated for the Luotuogou gabbros (Zhu et al, 2006).…”

Section: Parental Magmasupporting

confidence: 85%

Metasomatized lithosphere–asthenosphere interaction during slab roll-back: Evidence from Late Carboniferous gabbros in the Luotuogou area, Central Tianshan

Tang

Wang

Wyman

et al. 2012

Lithos

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Section: Parental Magmasupporting

confidence: 85%

Metasomatized lithosphere–asthenosphere interaction during slab roll-back: Evidence from Late Carboniferous gabbros in the Luotuogou area, Central Tianshan

Tang

Wang

Wyman

et al. 2012

Lithos

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“…Boudreau (1999) reader is referred to Ghiorso & Sack (1995), Ghiorso (1998) andBoudreau (1999). The major element geochemical trends for the du Chef dykes have been modelled using six different scenarios of varying pressure and water content ( Table 2).…”

Section: Fractional Crystallisationmentioning

confidence: 99%

The geochemistry and petrogenesis of the Paleoproterozoic du Chef dyke swarm, Québec, Canada

Ciborowski

Kerr

McDonald

et al. 2014

Precambrian Research

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“…The Fasnia titanites contain significant Fe, but its degree of oxidation is unknown. However, the Tenerife phonolitic melts are predicted to be Fe 3+ -rich; Fe 3+ /Fe 2+ is estimated at approximately 0.5 using MELTS (Ghiorso and Sack, 1995) hence Fe 3+ was freely available during titanite growth. Cation site size considerations (see next section) strongly favor incorporation of Fe 3+ over Fe 2+ into titanite hence we make the assumption that all Fe in titanites is present as Fe 3+ .…”

Section: Cation Substitutionsmentioning

confidence: 99%

Partitioning of rare earth and high field strength elements between titanite and phonolitic liquid

Olin

Wolff

2012

Lithos

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We present the results of a LA-ICPMS study of titanites and associated glasses from the mixed-magma phonolitic Fasnia Member of the Diego Hernández Formation, Tenerife, Canary Islands. We employ a method of identifying equilibrium mineral-melt pairs from natural samples using REE contents and a linear form of the lattice strain model equation (Blundy and Wood, 1994), where the Young's modulus (E M ) for the 7-fold coordinated site is an output variable. For felsic magmas that contain crystals potentially derived from a variety of environments within the system, this approach is more rigorous than the use of solely textural criteria such as mineral-glass proximity.We then estimate titanite/melt partition coefficients for Y, Zr, Nb, REE, Hf, Ta, U and Th. In common with prior studies, we find that middle REE partition more strongly into titanite than either light or heavy REE, and that REE partitioning behavior in titanite is reasonably predicted by the lattice strain model. Titanite also fractionates Y from Ho, Zr from Hf, and Nb from Ta. Comparison with experimental data indicates that melt structure effects on partitioning are significant, most particularly in very highly polymerized melts. We use the data to estimate 7-fold coordination radii for trivalent Pr, Nd, Ho, Tm and Lu, and to make approximate predictions of titanite/melt partitioning of Ra, Ac and Pa. Interpolation of data for heavy REE does not predict the behavior of Y, indicating that factors other than charge and radius are involved in partitioning. Variations in Y/Ho induced by magmatic processes appear to be negatively correlated with temperature, and are expected to be greatest in near-minimum melts.

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Chemical mass transfer in magmatic processes IV. A revised and internally consistent thermodynamic model for the interpolation and extrapolation of liquid-solid equilibria in magmatic systems at elevated temperatures and pressures

Cited by 665 publications

References 0 publications

Metasomatized lithosphere–asthenosphere interaction during slab roll-back: Evidence from Late Carboniferous gabbros in the Luotuogou area, Central Tianshan

Metasomatized lithosphere–asthenosphere interaction during slab roll-back: Evidence from Late Carboniferous gabbros in the Luotuogou area, Central Tianshan

The geochemistry and petrogenesis of the Paleoproterozoic du Chef dyke swarm, Québec, Canada

Partitioning of rare earth and high field strength elements between titanite and phonolitic liquid

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