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Volumn 274, Issue 5284, 1996, Pages 79-81

Intracrystalline transformation of olivine to wadsleyite and ringwoodite under subduction zone conditions

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; CRYSTAL; PRESSURE; PRIORITY JOURNAL; SHEAR STRESS; TEMPERATURE;

EID: 0029664034     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.274.5284.79     Document Type: Article
Times cited : (102)

References (33)
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    • C. M. Sung and R. G. Bums, Tectonophysics 31, 1 (1976); D. C. Rubie and C. R. Ross, Phys. Earth Planet. Inter. 86, 223 (1994); R. Daessler, D. A. Yuen, S. Karato, M. R. Riedel, ibid. 94, 217 (1996).
    • (1976) Tectonophysics , vol.31 , pp. 1
    • Sung, C.M.1    Bums, R.G.2
  • 2
    • 0028557592 scopus 로고
    • C. M. Sung and R. G. Bums, Tectonophysics 31, 1 (1976); D. C. Rubie and C. R. Ross, Phys. Earth Planet. Inter. 86, 223 (1994); R. Daessler, D. A. Yuen, S. Karato, M. R. Riedel, ibid. 94, 217 (1996).
    • (1994) Phys. Earth Planet. Inter. , vol.86 , pp. 223
    • Rubie, D.C.1    Ross, C.R.2
  • 12
    • 10144228022 scopus 로고
    • thesis, University of California, Davis
    • P. C. Burnley, thesis, University of California, Davis (1990).
    • (1990)
    • Burnley, P.C.1
  • 13
  • 14
    • 0029520085 scopus 로고
    • P. C. Burnley, Am. Mineral. 80, 1293 (1995). In that study, large amounts of transformation, inferred to occur by the shear mechanism of (79), resulted at pressure oversteps of 8 to 14 GPa.
    • (1995) Am. Mineral. , vol.80 , pp. 1293
    • Burnley, P.C.1
  • 20
    • 10144238122 scopus 로고    scopus 로고
    • note
    • 4 olivine to the β or γ phases might occur by the latter mechanism under near-equilibrium conditions in a two-phase stability field.
  • 22
    • 10144248594 scopus 로고
    • American Geophysical Union, Washington, DC
    • J. P. Poirier, Geodynamics Series Vol. 4 (American Geophysical Union, Washington, DC, 1981), p. 113.
    • (1981) Geodynamics Series , vol.4 , pp. 113
    • Poirier, J.P.1
  • 23
    • 0028585641 scopus 로고
    • 3 heater. Temperature was measured with a W3%Re-W25%Re thermocouple. The pressure was calibrated as a function of hydraulic oil pressure [D. Canil, Phys. Earth Planet. Inter. 86, 25 (1994)]. The pressure uncertainty was ±0.5 GPa.
    • (1994) Phys. Earth Planet. Inter. , vol.86 , pp. 25
    • Canil, D.1
  • 24
    • 10144239934 scopus 로고    scopus 로고
    • note
    • 2 during the reaction.
  • 26
    • 0000505156 scopus 로고
    • Hot-pressed starting materials were used because high densities of defects and submicrometer-sized grains that develop in pressurized powders are extremely reactive and therefore inappropriate for kinetic studies [A. J. Brearley, D. C. Rubie, E. Ito, Phys. Chem. Miner. 18, 343 (1992)].
    • (1992) Phys. Chem. Miner. , vol.18 , pp. 343
    • Brearley, A.J.1    Rubie, D.C.2    Ito, E.3
  • 27
    • 10144257472 scopus 로고    scopus 로고
    • note
    • The reason why the β phase is present in all reacted samples even though the experimental conditions nominally lie in the γ-phase stability field is not clear. Possible explanations are (i) that the estimated positions of the phase boundaries (Fig. 1) (22) might be in error; (ii) that the pressure calibration of the multianvil press may be in error because of the inclusion of the hot-pressing stage in our experiments; (iii) that the negative volume changes involved when olvine transforms to the high-pressure phases may reduce the pressure within the sample, at least on a localized scale, as the transformation proceeds; and (iv) that either the β phase or the γ phase could be metastable (25).
  • 28
    • 0025624168 scopus 로고
    • D. C. Rubie and A. J. Brearley, Nature 348, 628 (1990); A. J. Brearley and D. C. Rubie, Phys. Earth Planet. Inter. 86, 45 (1994).
    • (1990) Nature , vol.348 , pp. 628
    • Rubie, D.C.1    Brearley, A.J.2
  • 33
    • 10144235071 scopus 로고    scopus 로고
    • note
    • We thank C. Dupas for assistance with diffraction contrast imaging of stacking faults and dislocations, F. Seifert and S. Karato for helpful discussions, and H. Schulze for sample preparation. Supported by the Deutscher Akademischer Austauschdienst (A/95/ 09994) and the European Union "Human Capital and Mobility - Access to Large Scale Facilities" program (contract ERBCHGECT940053).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.