Density of phonolitic magmas and time scales of crystal fractionation in magma chambers

Seifert, R.; Malfait, Wim J.; Petitgirard, Sylvain; Sanchez-Valle, Carmen

doi:10.1016/j.epsl.2013.08.039

Cited by 31 publications

(39 citation statements)

References 68 publications

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“…In Figure 8, K 0 A is plotted as a function of K 0 for jadeite, albite, diopside melts. For comparison, K 0 -K 0 A plot of phonolite (Seifert et al, 2013) and pyrolytic peridotite (Sakamaki et al, 2010a) melts, which have complex composition, are also plotted in the figure. This figure indicates that K 0 A and K 0 are inversely related in these silicate melts.…”

Section: Compositional Dependence Of the Isothermal Compressibility Fmentioning

confidence: 99%

“…An advanced technique becomes popular for melt density measurements. This technique combines synchrotron X-ray absorption measurement with a large volume press and has been conducted successfully on a number of melts by several authors (Katayama et al, 1993;Sanloup et al, 2000;Sakamaki et al, 2009Sakamaki et al, , 2010aSakamaki et al, , 2010bSakamaki et al, , 2011Nishida et al, 2011;van Kan Parker et al, 2012;Sakamaki et al, 2013;Seifert et al, 2013;Malfait et al, 2014aMalfait et al, , 2014b. This well-established technique allows us to measure density of liquid under desired pressure and temperature conditions with much improved precision and accuracy.…”

Section: Introductionmentioning

confidence: 99%

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Density of jadeite melts under high pressure and high temperature conditions

Sakamaki

2017

Journal of Mineralogical and Petrological Sciences

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The density of the jadeite (NaAlSi 2 O 6 ) melt has been measured up to 6.5 GPa and 2273 K using the X-ray absorption technique at beamline 13-BM-D of the Advanced Photon Source. A fit of the pressure-densitytemperature data to the high temperature Birch-Murnaghan equation of state yielded the following thermoelastic parameters: density, ρ 0 = 2.36 g/cm 3 , isothermal bulk modulus, K T0 = 21.5 ± 0.8 GPa, its pressure derivative, K 0 A = 8.9 ± 1.2, and the temperature derivative (∂K T /∂T ) P = −0.0021 ± 0.0011 GPa/K at a reference temperature T 0 = 1473 K. The densification of jadeite melt at low pressures is primarily dominated by topological changes in the structure, including a decrease in T-O-T angle and breaking and reforming of the T-O bond (T = Si 4+ , Al 3+ ). Compressibilities of jadeite, albite, diopside, phonolite and peridotite melts display a systematic trend: the K 0 -K 0 A plot of these silicate melts exhibits an inverse linear relation.

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Section: Compositional Dependence Of the Isothermal Compressibility Fmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Density of jadeite melts under high pressure and high temperature conditions

Sakamaki

2017

Journal of Mineralogical and Petrological Sciences

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“…An independent constraint on

K'

is required because the data set of Lange and Carmichael [] is for a value of 1 bar. Therefore, we reparameterize

K'

for anhydrous silicate melts using previously estimated values from X‐ray absorption experiments [ Sakamaki et al ., ; Seifert et al ., ; Malfait et al ., ]. Jing and Karato [] showed that

K'

for anhydrous silicate melts could be parameterized as a function of SiO 2 content.…”

Section: Model Configurationmentioning

confidence: 99%

“…Our

\partial V / \partial P

and

\partial V / \partial T

values fall within the range of previously reported values. Our K T value of the H 2 O end‐member component at P r and T r , calculated using equation with the optimized parameters, falls within the previously reported range of K T values for the H 2 O end‐member component (Table ) [ Sakamaki et al ., ; Seifert et al ., ; Malfait et al ., ].…”

Section: Parametersmentioning

confidence: 99%

Density and seismic velocity of hydrous melts under crustal and upper mantle conditions

Ueki

Iwamori

2016

Geochem. Geophys. Geosyst.

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We present a new model for calculating the density of hydrous silicate melts as a function of P, T, H2O concentration, and melt composition. We optimize VPr,Tr, ∂V/∂T, ∂V/∂P, ∂V2/∂T∂P, and K′ of H2O end‐member components in hydrous silicate melts, as well as K′ of anhydrous silicate melts, using previously reported experimental results. The parameter set for H2O end‐member component in silicate melt optimized in this study is internally consistent with the parameter values for the properties of anhydrous silicate melt reported by Lange and Carmichael (1987, 1990). The model calculation developed in this study reproduces the experimentally determined densities of various hydrous melts, and can be used to calculate the relationships between pressures, temperatures, and H2O concentrations of various hydrous melts from ultramafic to felsic compositions at pressures of 0–4.29 GPa. Using the new parameter set, we investigate the effects of H2O content on the seismic velocity of hydrous melts, as well as seismic velocities in partially molten regions of subduction zones. The results show that water content in silicate melt plays a key role in determining seismic velocity structure, and therefore must be taken into account when interpreting seismic tomography.

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“…Pressure is not taken into account in Giordano's et al model, but the variation of viscosity with pressure is expected to be small (Del Gaudio and Behrens, 2009). At 1-1.5 GPa and 1200-1250°C, the density of phonolite liquids is 2550 kg/m 3 in the absence of water, and 2450 kg/m 3 with 3 % dissolved H 2 O (Seifert et al, 2013).…”

Section: Extraction Of a Phonolite Melt From A Lherzolite Sourcementioning

confidence: 99%