Hydration Effect on Equations of State for Minerals in the Peridotite System: Implication for Geotherms in the Mantle

Ye, Yu; Smyth, Joseph R.; Chen, Guangchen

doi:10.1007/s12583-022-1712-3

Cited by 3 publications

(2 citation statements)

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“…A recent work by Ye et al. (2022) reanalyzed the EoS of various hydrous phases, including SuB and argued that K T 0 were not well constrained in the high‐P XRD experiment. One possible explanation may lie in the use of different external pressure scale to calculate the pressure.…”

Section: Resultsmentioning

confidence: 99%

“…Li et al, 2016Li et al, , 2022Pacalo & Weidner, 1996;Rosa et al, 2015;Xu et al, 2022) and K T0 = 154.0-161.8 GPa predicted by theoretical studies (Mookherjee & Tsuchiya, 2015;Poswal et al, 2010;Yang et al, 2017) for Al-free and Al-bearing SuB (see also Table S1 in Supporting Information S1). A recent work by Ye et al (2022) reanalyzed the EoS of various hydrous phases, including SuB and argued that K T0 were not well constrained in the high-P XRD experiment. One possible explanation may lie in the use of different external pressure scale to calculate the pressure.…”

Section: Compressibility Of Al-bearing Submentioning

confidence: 99%

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Effect of Al‐Incorporation on the Sound Velocities of Superhydrous Phase B at High Pressure and High Temperature

Xu,

Gréaux,

et al. 2024

Geophysical Research Letters

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Sound velocities and densities of Al‐bearing superhydrous phase B (Al‐bearing SuB) were investigated up to 24 GPa and 1300 K by synchrotron X‐rays combined with ultrasonic interferometry techniques in a multi‐anvil apparatus. We found that Al + H incorporation decreases the adiabatic bulk modulus and shear modulus of SuB. Our results however suggest that this effect is less important than that of temperature. The presence of hydrous pyrolite with ∼10 wt.% Al‐bearing SuB in cold subducting slabs could explain up to ∼2% high velocity anomalies at the bottom of the mantle transition zone (500–660 km) while it turns into ∼7.7% low velocity anomalies below 660 km. Al‐bearing SuB is reportedly stable at mantle temperatures, where it could account for ∼12.2% low velocity anomalies beneath subduction zones in the uppermost lower mantle.

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Section: Resultsmentioning

confidence: 99%