Search Results - "Smyth, Joseph R."

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  1. 1

    Diamonds and water in the deep Earth: a new scenario by Nestola, Fabrizio, Smyth, Joseph R.

    Published in International geology review (17-02-2016)
    “…Earth is a water planet, but how much water exists on and in the Earth? Is the water limited to the Earth's surface and limited depths of our planet (molecular…”
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  2. 2

    Thermoelastic Properties of Fe3+‐Rich Jeffbenite and Application to Superdeep Diamond Barometry by Qin, Fei, Wang, Fei, Smyth, Joseph R., Zhang, Dongzhou, Xu, Jingui, Jacobsen, Steven D.

    Published in Geophysical research letters (28-03-2024)
    “…Jeffbenite (Mg3Al2Si3O12) is a tetragonal phase found in so far only in superdeep diamonds, and its thermoelastic parameters are a prerequisite for determining…”
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  3. 3

    Water Solubility in Aluminous Orthopyroxene and the Origin of Earth's Asthenosphere by Mierdel, Katrin, Keppler, Hans, Smyth, Joseph R., Langenhorst, Falko

    “…Plate tectonics is based on the concept of rigid lithosphere plates sliding on a mechanically weak asthenosphere. Many models assume that the weakness of the…”
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  4. 4

    Transition metals in the transition zone: partitioning of Ni, Co, and Zn between olivine, wadsleyite, ringwoodite, and clinoenstatite by Zhang, Li, Smyth, Joseph R., Kawazoe, Takaaki, Jacobsen, Steven D., Qin, Shan

    Published in Contributions to mineralogy and petrology (01-07-2018)
    “…Ni, Co, and Zn are widely distributed in the Earth’s mantle as significant minor elements that may offer insights into the chemistry of melting in the mantle…”
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  5. 5

    High‐Temperature Vibrational Spectra Between Mg (OH)2 and Mg (OD)2: Anharmonic Contribution to Thermodynamics and D/H Fractionation for Brucite by Zhu, Xi, Guo, Xinzhuan, Smyth, Joseph R., Ye, Yu, Wang, Xiang, Liu, Dan

    “…Brucite, Mg (OH)2, is an important analog for studying the thermodynamics of hydrous silicate minerals in the deep Earth, as well as H/D isotope fractionation…”
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  6. 6

    Effects of hydration on the elastic properties of olivine by Jacobsen, Steven D., Jiang, Fuming, Mao, Zhu, Duffy, Thomas S., Smyth, Joseph R., Holl, Christopher M., Frost, Daniel J.

    Published in Geophysical research letters (01-07-2008)
    “…Water, dissolved as hydroxyl (OH)− into the solid silicate minerals of the upper mantle can reduce adiabatic wave speeds through associated defects. Here we…”
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  7. 7

    Crystal structure, thermal expansivity, and elasticity of OH-chondrodite: trends among dense hydrous magnesium silicates by Ye, Yu, Jacobsen, Steven D., Mao, Zhu, Duffy, Thomas S., Hirner, Sarah M., Smyth, Joseph R.

    Published in Contributions to mineralogy and petrology (01-04-2015)
    “…We report the structure and thermoelastic properties of OH-chondrodite. The sample was synthesized at 12 GPa and 1523 K, coexisting with hydroxyl-clinohumite…”
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  8. 8

    In Situ Infrared Spectra for Hydrous Forsterite up to 1243 K: Hydration Effect on Thermodynamic Properties by Dan Liu, Sha Wang, Joseph R. Smyth, Junfeng Zhang, Xiang Wang, Xi Zhu, Yu Ye

    Published in Minerals (Basel) (01-09-2019)
    “…Hydrogen substitution has significant effect on the physical properties of olivine, the most abundant mineral in the upper mantle. We collected…”
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  9. 9

    The effect of water on the 410-km discontinuity: An experimental study by Smyth, Joseph R., Frost, Daniel J.

    Published in Geophysical research letters (15-05-2002)
    “…In order to evaluate the effect of H on the pressure and transition interval of the olivine‐wadsleyite transformation, synthesis experiments were carried out…”
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  10. 10

    Hydrogen Effect on the Sound Velocities of Upper Mantle Omphacite by Wade Mans, Jin S. Zhang, Ming Hao, Joseph R. Smyth, Dongzhou Zhang, Gregory J. Finkelstein, Przemyslaw Dera

    Published in Minerals (Basel) (01-11-2019)
    “…Clinopyroxene (Cpx) is commonly believed to be the best structural water (hydrogen) carrier among all major upper mantle nominally anhydrous minerals (NAMs)…”
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  11. 11

    Sound velocities and elastic constants of iron-bearing hydrous ringwoodite by Jacobsen, Steven D, Smyth, Joseph R, Spetzler, Hartmut, Holl, Christopher M, Frost, Daniel J

    “…The sound velocities and single-crystal elastic constants of Fo 89 hydrous ringwoodite (γ-Mg 1.7Fe 0.22H 0.16SiO 4) containing ∼10,000 ppm by weight (1 wt.%) H…”
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  13. 13

    Crystal Structure, Vibrational Spectra on Trivalent-Cation-Doped Rutile and Application in Optical Materials by Wang, Sha, Su, Yanan, Wang, Qingbo, Smyth, Joseph R., Liu, Dan, Zhu, Xi, Miao, Yunfan, Hu, Yancheng, Ye, Yu

    Published in Journal of physical chemistry. C (29-06-2023)
    “…Rutile is the most common TiO2 mineral with extensive application in the field of optical materials, and trivalent cations can significantly substitute Ti4+…”
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  14. 14

    Electrical conductivity anisotropy of dry and hydrous olivine at 8 GPa by Poe, Brent T., Romano, Claudia, Nestola, Fabrizio, Smyth, Joseph R.

    “…The effects of dissolved H 2O on the electrical conductivity and its anisotropy in olivine (Fo 90) at 8 GPa were investigated by complex impedance…”
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    Fe2+ substitution in coexisting wadsleyite and clinopyroxene under hydrous conditions: implications for the 520-km discontinuity by Zhang, Li, Smyth, Joseph R.

    Published in Physics and chemistry of minerals (2020)
    “…Chemical compositions and crystal structures of coexisting wadsleyite, clinopyroxene, and phase E (synthesized at 1400 °C and 18 GPa under hydrous conditions)…”
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  17. 17

    High-temperature Raman and FTIR study of aragonite-group carbonates by Wang, Xiang, Ye, Yu, Wu, Xiang, Smyth, Joseph R., Yang, Yan, Zhang, Zengming, Wang, Zhongping

    Published in Physics and chemistry of minerals (01-01-2019)
    “…In situ high-temperature Raman and Fourier transform infrared spectra were measured for aragonite, strontianite, cerussite, and witherite at ambient pressure…”
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  18. 18

    Shear Waves in the Diamond-Anvil Cell Reveal Pressure-Induced Instability in (Mg,Fe)O by Jacobsen, Steven D., Spetzler, Hartmut, Reichmann, Hans J., Smyth, Joseph R., Hemley, Russell J.

    “…The emerging picture of Earth's deep interior from seismic tomography indicates more complexity than previously thought. The presence of lateral anisotropy and…”
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  19. 19

    High pressure crystal chemistry of hydrous ringwoodite and water in the Earth’s interior by Smyth, Joseph R, Holl, Christopher M, Frost, Daniel J, Jacobsen, Steven D

    “…The crystal chemistry of Fo 90 hydrous ringwoodite (Mg 1.7Fe 0.22H 0.15SiO 4) containing 0.93% H 2O by weight has been studied at pressures up to 11.2 GPa by…”
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  20. 20

    In-situ high-pressure and high-temperature spectroscopic studies of phengite in ultrahigh-pressure eclogite: implications for water transport during ultra-deep continental subduction by He, Xuejing, Zhang, Li, Kagi, Hiroyuki, Smyth, Joseph R., Komatsu, Kazuki, Li, Xiaoguang, Gao, Jing, Lei, Li

    Published in Physics and chemistry of minerals (01-07-2022)
    “…Pressure and temperature responses of natural phengite [K 0.93 Na 0.03 (Al 1.46 Mg 0.45 Fe 0.09 )(Si 3.59 Al 0.39 Ti 0.02 )O 10 (OH 1.94 F 0.06 )] in…”
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