Electrical conductivity of the major upper mantle minerals: a review

T. Katsura, T. Yoshino, G. Manthilake, T. Matsuzaki

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The electrical conductivity of the major upper mantle minerals, namely, olivine, wadsleyite and ringwoodite, is reviewed in this paper. There are mainly three electrical conduction mechanisms for three upper mantle minerals: hopping, ionic and proton conductions. The charge carriers for these conduction mechanisms are an electron hole in Fe ion, a vacancy in Mg site, and a proton, respectively. Hopping conduction is the most essential conduction mechanism for the major upper mantle minerals. Because ionic conduction has high activation energy, it becomes a dominant conduction mechanism only at high temperatures. Proton conduction contributes at relatively low temperatures. If the mantle minerals contain large amount of water (more than 0.1 wt.%), proton conduction can be a dominant conduction mechanism, even at high temperatures.

Original languageEnglish
Pages (from-to)1139-1145
Number of pages7
JournalRussian Geology and Geophysics
Volume50
Issue number12
DOIs
Publication statusPublished - Dec 1 2009

Keywords

  • electrical conductivity
  • olivine
  • ringwoodite
  • transition layer
  • upper mantle
  • wadsleyite

ASJC Scopus subject areas

  • Geophysics
  • Geology

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