In situ X-ray observation of decomposition of superhydrous phase B at high pressure and temperature

Geophysical Research Letters

Volumn 30, Issue 2, 2003, Pages

  Ohtani, Eiji ^a   Toma, Motomasa ^a   Kubo, Tomoaki ^a   Kondo, Tadashi ^a   Kikegawa, Takumi ^a  

^a TOHOKU UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

DECOMPOSITION; PEROVSKITE; X RAY DIFFRACTION ANALYSIS; EARTH SCIENCES; GEOPHYSICS;

SUPERHYDROUS PHASE; DECOMPOSITION REACTION; HIGH PRESSURE AND HIGH TEMPERATURE; HIGH-PRESSURE AND TEMPERATURES; LOWER MANTLE; PERICLASE; SITU X RAY OBSERVATIONS;

GEOPHYSICAL PROSPECTING; X RAY DIFFRACTION;

HYDROUS MINERAL; MANTLE CHEMISTRY; PERIDOTITE; SLAB; SUBDUCTION; WATER CONTENT;

EID: 0037591205     PISSN: 00948276     EISSN: None     Source Type: Journal    
DOI: 10.1029/2002GL015549     Document Type: Article

References (17)

1. 3 perovskite and negative pressure-temperature slopes for perovskite-forming reactions, Geophys. Res. Lett., 20, 1839-1842, 1993.
2. Anderson, O. L., D. G. Isaak, and S. Yamamoto, Anharmonicity and the equation of state for gold, J. Appl. Phys., 65, 1534-1543, 1989.
3. 2O system up to 24 GPa: Implications for the distribution of water in the Earth's mantle, Earth Planet. Sci. Lett., 182, 209-221, 2000.
4. Chudinovskikh, L., and R. Boehler, High pressure polymorphs of olivine and the 660-km discontinuity, Nature, 411, 574. 577, 2001.
5. Frost, D. J., The stability of dense hydrous magnesium silicates in Earth's transition zone and lower mantle. mantle petrology; Field observations and high pressure experimentation: A tribute to Francis R. (Joe) Boyd, edited by Y. Fei, C. M. Bertka, and B. O. Mysen, Geochemical Society, Special Publication No. 6: pp. 283-296, 1999.
6. Frost, D. J., and Y. Fei, The stability of phase D at high pressure and temperature, J. Geophys. Res., 103, 7463-7474, 1998.
7. Helffrich, G., and J. Brodholt, Relationship of deep seismicity to the thermal structure of subducted lithosphere, Nature, 353, 252-255, 1991.
8. 4 determined by in situ X-ray diffraction, Science, 279, 1698-1700, 1998.
9. 4 and some geophysical implications, J. Geophys. Res., 94, 10,637 10,646, 1989.
10. Murakami, M., K. Hirose, H. Yurimoto, S. Nakashima, and N. Takafuji, Water in Earth's lower mantle. Science, 295, 1885-1887, 2002.
11. Ohtani, E., H. Mizobata, Y. Kudoh, T. Nagase, H. Arashi, H. Yurimoto, and I. Miyagi, A new hydrous silicate, a water reservoir, in the upper part of the lower mantle, Geophys. Res. Lett., 24, 1047-1050, 1997.
12. Ohtani, E., M. Toma, K. Litasov, T. Kubo, and A. Suzuki, Stability of dense hydrous magnesium silicate phases and water storage capacity in the transition zone and lower mantle, Phys. Earth Planet. Inter., 124, 105-117, 2001.
13. Ono, S., Stability limits of hydrous minerals in sediment and mid-ocean ridge basalt compositions: Implications for water transport in subduction zones, J. Gephys. Res., 103, 18,253-18,267, 1998.
14. Schmidt, M. W., and S. Poli, Experimentally based water budgets for dehydrating slabs and consequences for arc magma generation, Earth Planet. Sci. Lett., 163, 361-379, 1998.
15. Shieh, S. R., H. K. Mao, and J. C. Ming, Decomposition of phase D in the lower mantle and the fate of dense hydrous silicates in subducting slabs, Earth Planet. Sci., 159, 13-23, 1998.
16. 4 and its relation to the 660-km seismic discontinuity, Nature, 411, 571-574, 2001.
17. 4, Geophys. Res. Lett., 27, 803-806, 2000.