The density of andesitic melts and the compressibility of dissolved water in silicate melts at crustal and upper mantle conditions

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

doi:10.1016/j.epsl.2014.02.042

Cited by 52 publications

(47 citation statements)

References 51 publications

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“…To exclude the uncertainties related to variations in experimental methods, including assessments of supercooling or glass transition, we excluded density measurements based on quenched or supercooled materials, and density measurements obtained by indirect methods, such as length measurement and the sink/float method. Based on our criteria, above‐liquidus in situ density measurements of various hydrous melts by X‐ray absorption [ Sakamaki et al ., ; Seifert et al ., ; Malfait et al ., ] and direct volume measurements of hydrous albite melts [ Burnham and Davis , ], are used for parameter optimization. The density values of the experiments of Burnham and Davis [] were taken from Ochs and Lange [, Table 6].…”

Section: Parameterssupporting

confidence: 75%

“…Consequently, the pressure gap in the database means that the volumetric properties of hydrous melts, especially K T and

K'

, cannot be precisely constrained [ Agee , ]. Recently, using the X‐ray absorption method, in situ density measurements of various hydrous silicate melts, including mafic basalt, phonolite, rhyolite, and andesite, have been reported at pressure ranges of <5 GPa [ Sakamaki et al ., ; Seifert et al ., ; Malfait et al ., ]. These new, precise in situ density measurements cover the compositional and pressure ranges of subduction zone melting regions with numerous experimental results.…”

Section: Introductionsupporting

confidence: 61%

“…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%

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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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Section: Parameterssupporting

confidence: 75%

“…Consequently, the pressure gap in the database means that the volumetric properties of hydrous melts, especially K T and

K'

Section: Introductionsupporting

confidence: 61%

“…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%

See 1 more Smart Citation

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

Ueki

Iwamori

2016

Geochem. Geophys. Geosyst.

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“…Previously, the EOS for silicate liquids at high pressures relevant to the Earth's upper mantle and transition zone was mainly constrained using the density data obtained by static compression such as sink‐float (e.g., Agee, ; Agee & Walker, ; Ghosh et al, ; Jing & Karato, ; Matsukage et al, ) and X‐ray absorption experiments (e.g., Malfait et al, ; Sakamaki et al, ; Seifert et al, ). However, the obtained EOS often have large uncertainties due to the scarcity of data from sink‐float measurements and the limited pressure range for X‐ray absorption method (e.g., Agee, ; Agee & Walker, ; Malfait et al, ): There exists a large trade‐off between the fitted bulk modulus ( K ) and its pressure derivative ( K′ ) due to the strong correlation between these two EOS parameters (Bass et al, ; Jing & Karato, ). Hugoniot data obtained by shock compression (e.g., Asimow & Ahrens, ; Rigden et al, ; Thomas & Asimow, ) can help place tighter constraints on K and K′ due to the wider pressure range in the measurements, but the reduction of shock‐wave data requires assumptions on high‐pressure thermal properties since shock temperatures were not determined directly in these experiments.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Velocity of Diopside Liquid at High Pressure and Temperature: Constraints on Velocity Reduction in the Upper Mantle Due to Partial Melts

Jing

Chantel

et al. 2018

JGR Solid Earth

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Sound velocities of diopside liquid were determined at high pressures and temperatures up to 3.8 GPa and 2375 K, using the ultrasonic technique combined with synchrotron X‐ray diffraction and imaging in a multianvil apparatus. Our results show that the sound velocity increases with pressure but is nearly independent of temperature. Using a Monte Carlo approach, the measured high‐pressure sound velocities combined with ambient‐pressure density provide tight constraints for the equation of state of diopside liquid, with a best‐fit adiabatic bulk modulus (KS) of 23.8 ± 0.4 GPa and its pressure derivative (KS') of 7.5 ± 0.5. The calculated adiabatic temperature and density profile of diopside liquid suggest that a melt layer with diopside composition in the upper mantle would be gravitationally unstable and start to crystallize from the bottom of the layer during cooling. By comparing our results with previous acoustic measurements on silicate glasses, we demonstrate the important differences in sound velocities between silicate liquids and glasses and conclude that silicate glasses may not work as a good analog material for studying the acoustic properties of silicate liquids, as measurements on unrelaxed glasses do not capture the entropic contribution to the compressional properties of liquids. We modeled velocity reductions due to partial melts in the upper mantle using our results and found that for a given velocity reduction, the deeper the low‐velocity region, the larger the melt fraction is required. Using silicate glass data for such estimation would result in a significant underestimation of melt fractions at high pressures.

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“…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%

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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The density of andesitic melts and the compressibility of dissolved water in silicate melts at crustal and upper mantle conditions

Cited by 52 publications

References 51 publications

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

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

Ultrasonic Velocity of Diopside Liquid at High Pressure and Temperature: Constraints on Velocity Reduction in the Upper Mantle Due to Partial Melts

Density of jadeite melts under high pressure and high temperature conditions

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