Effect of water on phase transitions in the Earth's mantle

Eiji Otani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Water can play important roles for Earth's evolution. In this paper, we summarize recent studies on the effect of water on the phase relations, i.e., location of phase boundaries of the olivine-wadsleyite transition, post-spinel and post-garnet transitions, and that on kinetics of the phase transition of the olivine-wadsleyite transformation. Water expands the stability field of wadsleyite and ringwoodite. Water enhances the transformation kinetics from olivine to wadsleyite. The effects of water on the phase transitions can affect the topography of the 410 km and 660 km discontinuities, and dynamics of slabs descending into the transition zone and lower mantle.

Original languageEnglish
Title of host publicationWATER DYANMICS
Subtitle of host publication4th International Workshop on Water Dynamics
Pages3-7
Number of pages5
DOIs
Publication statusPublished - 2007 May 11
Event4th International Workshop on Water Dynamics - Sendai, Japan
Duration: 2006 Nov 72006 Nov 8

Publication series

NameAIP Conference Proceedings
Volume898
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other4th International Workshop on Water Dynamics
CountryJapan
CitySendai
Period06/11/706/11/8

Keywords

  • Kinetics
  • Mantle discontinuity
  • Olivine-wadsleyite transition
  • Phase boundary
  • Post-spinel transition
  • Water

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Otani, E. (2007). Effect of water on phase transitions in the Earth's mantle. In WATER DYANMICS: 4th International Workshop on Water Dynamics (pp. 3-7). (AIP Conference Proceedings; Vol. 898). https://doi.org/10.1063/1.2721239