메뉴 건너뛰기




Volumn 309, Issue 5741, 2005, Pages 1707-1710

Geophysics: Fe-Mg interdiffusion in (Mg,Fe)SiO3 perovskite and lower mantle reequilibration

Author keywords

[No Author keywords available]

Indexed keywords

DEFORMATION; DIFFUSION; PEROVSKITE; SILICON;

EID: 24644469011     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1111895     Document Type: Article
Times cited : (129)

References (30)
  • 6
    • 24644440234 scopus 로고    scopus 로고
    • note
    • Materials and methods are available as supporting material on Science Online.
  • 9
    • 24644442924 scopus 로고    scopus 로고
    • note
    • Fe-Mg interdiffusion in olivine at 1 bar was measured by Chakraborty (23) and Si diffusion coefficients are determined by Dohnen et al. (24).
  • 10
    • 24644433523 scopus 로고    scopus 로고
    • note
    • -1 (25) is a good approximation for the activation volume of perovskite.
  • 13
    • 24644523802 scopus 로고    scopus 로고
    • note
    • lat for a grain size of 10 μm. Equilibration times would show an enhancement on the same order, whereas diffusion length scales would be a factor of 6 longer. For grain sizes larger than 100 μm, the effect would become insignificant. The grain size of the lower mantle is estimated to be on the order of 100 to 1000 μm (12). Thus, if no substantial grain size reduction occurs, lattice diffusion should be the predominant mode of diffusion in the lower mantle.
  • 14
    • 24644494412 scopus 로고    scopus 로고
    • note
    • pvsk is the Fe-Mg interdiffusion coefficient of perovskite) for a matrix of silicate perovskite with dispersed ferropericlase inclusions.
  • 17
    • 1842420623 scopus 로고    scopus 로고
    • D. J. Frost et al., Nature 428, 409 (2004).
    • (2004) Nature , vol.428 , pp. 409
    • Frost, D.J.1
  • 27
    • 24644465258 scopus 로고    scopus 로고
    • thesis, University of Cologne
    • C. Holzapfel, thesis, University of Cologne (2004).
    • (2004)
    • Holzapfel, C.1
  • 28
    • 24644446600 scopus 로고    scopus 로고
    • C. Holzapfel, S. Chakraborty, D. C. Rubie, D. J. Frost, data not shown
    • C. Holzapfel, S. Chakraborty, D. C. Rubie, D. J. Frost, data not shown.
  • 30
    • 24644505447 scopus 로고    scopus 로고
    • note
    • We thank H. Schulze and O. Leitner for sample preparation and H. Fischer and G. Herrmannsdörfer for technical assistance. We are grateful to three anonymous referees for journal reviews.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.