The shock wave equation of state of brucite Mg(OH)2

T. S. Duffy; T. J. Ahrens; M. A. Lange

doi:10.1029/91jb00987

The shock wave equation of state of brucite Mg(OH)₂

T. S. Duffy, T. J. Ahrens, M. A. Lange

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51 Scopus citations

Abstract

New equation of state (EOS) data for brucite Mg(OH)₂ shocked between 12 and 60 GPa are reported. When combined with earlier data of Simakov et al. (1974), it is found that brucite EOS data between 12 and 97 GPa can be fit with a single linear U_s-u_p relationship: U_s=4.76(0.11)+1.35(0.05)u_p. The third order Birch-Murnaghan equation parameters are: K_os=51±4 GPa and K′_os=5.0±0.4. Calculated phase boundaries using the present EOS data are consistent with experimental data and indicate that brucite is unlikely to be stable under lower mantle conditions. However, brucite data, in conjunction with data for silicates and oxides, can be used to infer the effect of H₂O on lower mantle properties. -from Authors

Original language	English (US)
Pages (from-to)	14,319-14,330
Journal	Journal of Geophysical Research
Volume	96
Issue number	B9
DOIs	https://doi.org/10.1029/91jb00987
State	Published - 1991
Externally published	Yes

All Science Journal Classification (ASJC) codes

Geophysics
Forestry
Oceanography
Aquatic Science
Ecology
Water Science and Technology
Soil Science
Geochemistry and Petrology
Earth-Surface Processes
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science
Palaeontology

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10.1029/91jb00987

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title = "The shock wave equation of state of brucite Mg(OH)2",

abstract = "New equation of state (EOS) data for brucite Mg(OH)2 shocked between 12 and 60 GPa are reported. When combined with earlier data of Simakov et al. (1974), it is found that brucite EOS data between 12 and 97 GPa can be fit with a single linear Us-up relationship: Us=4.76(0.11)+1.35(0.05)up. The third order Birch-Murnaghan equation parameters are: Kos=51±4 GPa and K′os=5.0±0.4. Calculated phase boundaries using the present EOS data are consistent with experimental data and indicate that brucite is unlikely to be stable under lower mantle conditions. However, brucite data, in conjunction with data for silicates and oxides, can be used to infer the effect of H2O on lower mantle properties. -from Authors",

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year = "1991",

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T1 - The shock wave equation of state of brucite Mg(OH)2

AU - Duffy, T. S.

AU - Ahrens, T. J.

AU - Lange, M. A.

PY - 1991

Y1 - 1991

N2 - New equation of state (EOS) data for brucite Mg(OH)2 shocked between 12 and 60 GPa are reported. When combined with earlier data of Simakov et al. (1974), it is found that brucite EOS data between 12 and 97 GPa can be fit with a single linear Us-up relationship: Us=4.76(0.11)+1.35(0.05)up. The third order Birch-Murnaghan equation parameters are: Kos=51±4 GPa and K′os=5.0±0.4. Calculated phase boundaries using the present EOS data are consistent with experimental data and indicate that brucite is unlikely to be stable under lower mantle conditions. However, brucite data, in conjunction with data for silicates and oxides, can be used to infer the effect of H2O on lower mantle properties. -from Authors

AB - New equation of state (EOS) data for brucite Mg(OH)2 shocked between 12 and 60 GPa are reported. When combined with earlier data of Simakov et al. (1974), it is found that brucite EOS data between 12 and 97 GPa can be fit with a single linear Us-up relationship: Us=4.76(0.11)+1.35(0.05)up. The third order Birch-Murnaghan equation parameters are: Kos=51±4 GPa and K′os=5.0±0.4. Calculated phase boundaries using the present EOS data are consistent with experimental data and indicate that brucite is unlikely to be stable under lower mantle conditions. However, brucite data, in conjunction with data for silicates and oxides, can be used to infer the effect of H2O on lower mantle properties. -from Authors

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The shock wave equation of state of brucite Mg(OH)₂

Abstract

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