Dissociation of CAS phase in the uppermost lower mantle

Physics and Chemistry of Minerals

Volumn 35, Issue 4, 2008, Pages 197-200

  Ishibashi, Kazufusa ^a   Hirose, Kei ^a,b   Sata, Nagayoshi ^b   Ohishi, Yasuo ^c  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

^b JAPAN AGENCY FOR MARINE EARTH SCIENCE AND TECHNOLOGY   (Japan)

^c JAPAN SYNCHROTRON RADIATION RESEARCH INSTITUTE   (Japan)

Author keywords

CAS phase; Lower mantle; Phase transition; X ray diffraction

Indexed keywords

BASALT; CHEMICAL STABILITY; DECOMPOSITION; DISSOCIATION; MELTING; PHASE TRANSITIONS;

CALCIUM ALUMINOSILICATE; SUBSOLIDUS MINERAL ASSEMBLAGE;

ALUMINOSILICATES;

ALUMINOSILICATE; BASALT; CHEMICAL COMPOSITION; DECOMPOSITION; HIGH PRESSURE; HIGH TEMPERATURE; LOWER MANTLE; PHASE TRANSITION; SUBDUCTION; X-RAY DIFFRACTION;

EID: 42049105136     PISSN: 03421791     EISSN: 14322021     Source Type: Journal    
DOI: 10.1007/s00269-007-0212-4     Document Type: Article

References (24)

1. 11] in shocked Martian meteorites. Earth Planet Sci Lett 219:1-12
2. Christensen UR, Hofmann AW (1994) Segregation of subducted oceanic crust in the convecting mantle. J Geophys Res 99:19867-19884
3. 2 at 14GPa. Phys Earth Planet Inter 94:71-81
4. 11? Phys Earth Planet Inter 102:223-229
5. 11. Phys Chem Miner 27:47-51
6. Hammersley AP (1996) Fit2d user manual. ESRF, Grenoble
7. Hirose K, Fei Y (2002) Subsolidus and melting phase relations of basaltic composition in the uppermost lower mantle. Geochim Cosmochim Acta 66:2099-2108
8. Hirose K, Fei Y, Ma Y, Mao HK (1999) The fate of subducted basaltic crust in the Earth's lower mantle. Nature 397:53-56
9. Hirose K, Shimizu N, van Westrenen W, Fei Y (2004) Trace element partitioning in Earth's lower mantle and implications for geochemical consequences of partial melting at the core-mantle boundary. Phys Earth Planet Inter 146:249-260
10. Hirose K, Takafuji N, Sata N, Ohishi Y (2005) Phase transition and density of subducted MORB crust in the lower mantle. Earth Planet Sci Lett 237:239-251
11. 3 using Au and MgO internal pressure standards. Geophys Res Lett 33:L01310, doi: 10.1029/2005GL024468
12. Irifune T, Ringwood AE, Hibberson WO (1994) Subduction of continental crust and terrigenous and pelagic sediments: An experimental study. Earth Planet Sci Lett 126:351-368
13. Jamieson JC, Fritz JN, Manghnani MH (1982) Pressure measurement at high temperature in X-ray diffraction studies: Gold as a primary standard. In: Akimoto S, Manghnani MH (eds) High pressure research in geophysics. Center for Academic Publishing, Tokyo, pp 27-48
14. 3 perovskite: Implications for seismic discontinuities in the lower mantle. Phys Earth Planet Inter 145:67-74
15. Lay T, Williams Q, Garnero E (1998) The core-mantle boundary layer and deep Earth dynamics. Nature 392:461-468
16. 2 determined by in situ X-ray observations. Earth Planet Sci Lett 197:187-192
17. Ono S, Iizuka T, Kikegawa T (2005a) Compressibility of the calcium aluminosilicate, CAS, phase to 44 GPa. Phys Earth Planet Inter 150:331-338
18. Ono S, Ohishi Y, Isshiki M, Watanuki T (2005b) In situ X-ray observations of phase assemblages in peridotite and basalt compositions at lower mantle conditions: Implications for density of subducted oceanic plate. J Geophys Res 110:B02208, doi: 10.1029/2004JB003196
19. Shen G, Mao HK, Hemley RJ (1996) Laser-heated diamond anvil cell technique: Double-sided heating with multimode Nd:YAG laser. In: Advance materials '96 new trends in high pressure research, 3rd international symposium advanced materials. Natl Inst Mater Sci, Ibaraki, Japan, pp 149-152
20. Tackley PJ (1998) Three-dimensional simulations of mantle convection with a thermo-chemical basal boundary layer: D"? In: Gurnis M, et al (ed) The core-mantle boundary region. AGU, Washington, D.C, pp 231-253
21. Wang W, Takahashi E (1999) Subsolidus and melting experiments of a K-rich basaltic composition to 27 GPa: Implication for the behavior of potassium in the mantle. Am Miner 84:357-361
22. Watanuki T, Shimomura O, Yagi T, Kondo T, Issiki M (2001) Construction of laser-heated diamond anvil cell system for in situ X-ray diffraction study at SPring-8. Rev Sci Instrum 72:1289-1292
23. Yusa H, Yagi T, Shimobayashi N (1995) A new unquenchable high-pressure polymorph of Ca 3 Al 2 Si 3 O 12. Phys Earth Planet Inter 92:25-31
24. Zerr A, Diegeler A, Boehler R (1998) Solidus of Earth's deep mantle. Science 281:243-246