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Trench-parallel anisotropy produced by serpentine deformation in the hydrated mantle wedge

Author

Listed:
  • Ikuo Katayama

    (Hiroshima University)

  • Ken-ichi Hirauchi

    (Hiroshima University)

  • Katsuyoshi Michibayashi

    (Institute of Geosciences, Shizuoka University)

  • Jun-ichi Ando

    (Hiroshima University)

Abstract

Serpentine deformation in the trenches Although seismic anisotropy in the upper mantle is generally attributed to the crystal-preferred orientation of olivine, the strong trench-parallel anisotropy observed in several subduction systems is difficult to explain in terms of olivine anisotropy, even if the entire mantle wedge were to act as an anisotropic source. Using high-pressure deformation experiments, Ikuo Katayama and colleagues show that the crystal-preferred orientation of serpentine, the main hydrous mineral in the upper mantle, can produce the strong trench-parallel seismic anisotropy observed in such subduction systems.

Suggested Citation

  • Ikuo Katayama & Ken-ichi Hirauchi & Katsuyoshi Michibayashi & Jun-ichi Ando, 2009. "Trench-parallel anisotropy produced by serpentine deformation in the hydrated mantle wedge," Nature, Nature, vol. 461(7267), pages 1114-1117, October.
    • Handle: RePEc:nat:nature:v:461:y:2009:i:7267:d:10.1038_nature08513
    DOI: 10.1038/nature08513
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    Cited by:

    1. Yu-Hsiang Chien & Enrico Marzotto & Yi-Chi Tsao & Wen-Pin Hsieh, 2024. "Anisotropic thermal conductivity of antigorite along slab subduction impacts seismicity of intermediate-depth earthquakes," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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