Dislocation microstructures of MgSiO3 perovskite at a high pressure and temperature condition

Physics of the Earth and Planetary Interiors

Volumn 174, Issue 1-4, 2009, Pages 153-158

  Miyajima, Nobuyoshi ^a,b   Yagi, Takehiko ^a   Ichihara, Masaki ^a  

^a UNIVERSITY OF TOKYO   (Japan)

^b UNIVERSITÄT BAYREUTH   (Germany)

Author keywords

Burgers vectors; Dislocation microstructures; High pressure; MgSiO3 perovskite; TEM

Indexed keywords

AMBIENT PRESSURES; CROSS-POLARIZED; CUBIC SYMMETRIES; DISLOCATION CLIMBS; DISLOCATION CREEPS; DISLOCATION MICROSTRUCTURES; EARTH'S LOWER MANTLES; HIGH PRESSURE; HIGH TEMPERATURE AND PRESSURES; HIGH TEMPERATURES; HIGH-PRESSURE APPARATUS; HIGH-PRESSURE EXPERIMENTS; LOW-ANGLE TILTS; MGSIO3 PEROVSKITE; NON SILICATES; ORTHORHOMBIC SYMMETRIES; POLY-CRYSTALLINE; SLOW STRAIN RATES; TEM; TEM OBSERVATIONS;

BURGERS VECTOR; HIGH PRESSURE ENGINEERING; MICROSTRUCTURE; OPTICAL MICROSCOPY; OXIDE MINERALS; SILICATES; STRAIN RATE; TRANSMISSION ELECTRON MICROSCOPY; VECTORS;

PEROVSKITE;

CRYSTAL STRUCTURE; DEFORMATION; DIFFUSION; DISLOCATION; EXPERIMENTAL MINERALOGY; HIGH PRESSURE; HIGH TEMPERATURE; LOWER MANTLE; MICROSCOPY; PEROVSKITE; RHEOLOGY; ROCK MICROSTRUCTURE; STRAIN RATE; TRANSMISSION ELECTRON MICROSCOPY; VECTOR;

EID: 67349287500     PISSN: 00319201     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.pepi.2008.04.004     Document Type: Article

References (25)

1. 3 perovskite deformed at high-temperature. A transmission electron microscopy study. Phys. Chem. Miner. 23 (1996) 337-344
2. Boland J.N., McLaren A.C., and Hobbs B.E. Dislocations associated with optical features in naturally-deformed olivine. Contrib. Mineral. Petrol. 30 (1971) 53-63
3. 3 perovskite at conditions of the Earth's uppermost lower mantle. Nature 428 (2004) 837-840
4. 3 minerals. Nature 446 (2007) 68-70
5. 3. Phys. Chem. Miner. 13 (1986) 403-410
6. Edington J.W. Practical Electron Microscopy in Materials Science (1976), Van Nostrand Reinhold, New York 344 pp
7. 3 perovskite at 30 GPa based on the Peierls-Nabarro model. Phys. Earth Planet. Interiors 163 (2007) 283-291
8. 3. Geophys. Res. Lett. 32 (2005) L13313 10.1029/2005GL023219
9. Hobbs B.E., Means W.D., and Williams P.F. An Outline of Structural Geology (1976), Wiley, New York 512 pp
10. Ito E., and Katsura T. Melting of ferromagnesian silicate under the lower mantle conditions. In: Syono Y., and Manghnani M.H. (Eds). High-Pressure Research: Applications to Earth and Planetary Sciences (1992), Terra Pub., Tokyo 315-322
11. 4 and some geophysical implications. J. Geophys. Res. 94 (1989) 10637-10646
12. 3 perovskite: the results of microhardness tests on single crystals. Geophys. Res. Lett. 17 (1990) 13-16
13. Karato S.-i., and Li P. Diffusion creep in perovskite: implications for the rheology of the lower mantle. Science 255 (1992) 1238-1240
14. Karato S.-i., Zhang S., and Wenk H.R. Superplasticity in Earth's lower mantle: evidence from seismic anisotropy and rock physics. Science 270 (1995) 458-461
15. Li L., Raterron P., Weidner D., and Chen J. Olivine flow mechanisms at 8 GPa. Phys. Earth Planet. Interiors 138 (2003) 113-129
16. McLaren, A.C., Hobbs, B.E., 1972. Transmission electron microscope investigation of some natural deformed quartzites. In: Heard, H.C., Borg, I.Y., Carter, N.L., Raleigh, C.B. (Eds.). Flow and Fracture of Rocks. Am. Geophys. Union, Geophys. Monogr. Ser. 16, pp. 55-66.
17. McLaren A.C., Turner R.G., Boland J.L., and Hobbs B.E. Dislocation structure of deformation lamellae in synthetic quartz. Contrib. Mineral. Petrol. 29 (1970) 104-115
18. Miyajima N., Langenhorst F., Frost D.J., and Yagi T. Electron channelling spectroscopy of iron in majoritic garnet and silicate perovskite using a transmission electron microscope. Phys. Earth Planet. Interiors 143-144 (2004) 601-609
19. 3 post-perovskite phase. Geophys. Res. Lett. 33 (2006) L12302 10.1029/2005GL025001
20. Poirier J.P., Beauchesne S., and Guyet F. Deformation mechanisms of crystals with perovskite structure. In: Navrotsky A., and Weidner D. (Eds). Perovskite: A structure of Great Interest to Geophysics and Material Science (1989), American Geophysical Union, Washington, DC 119-123
21. 3: implications for the D″ layer at the core-mantle boundary. Geophys. Res. Lett. 34 (2007) L08306 10.1029/2007GL029407
22. 3. Phys. Earth Planet. Interiors 110 (1999) 51-69
23. 3 perovskite: evidence for structural phase transitions and implications for the lower mantle. J. Geophys. Res. 97 (1992) 12327-12347
24. Wenk H.-R., Speziale S., McNamara A.K., and Garnero E.J. Modeling lower mantle anisotropy development in subducting slab. Earth Planet. Sci. Lett. 245 (2006) 302-314
25. 3. Phys. Earth Planet. Interiors 74 (1992) 9-22