High-resolution subducting-slab structure beneath northern Honshu, Japan, revealed by double-difference tomography

DOI 被引用文献11件

書誌事項

公開日
2004
DOI
  • 10.1130/g20261.2
公開者
Geological Society of America

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説明

The high-resolution seismic velocity structure of the subducting slab beneath northern Honshu, Japan, has been obtained by double-difference tomography, capitalizing on the existence of two planes of seismicity. The upper plane lies in the region with average to high Vp/Vs ratios (1.72–1.85), which may correspond to the transformations of metabasalt and metagabbro to blueschist. The lower plane is associated with very low Vp/Vs ratios (1.6–1.7), in sharp contrast with high Vp/Vs ratios (∼1.8–1.85) in the region between the two planes. These features may be explained by forsterite-enstatite-H2O formation from serpentine dehydration in the lower plane and partial hydration of the region between the two planes. Our results provide direct constraints for petrologic modeling of the subducting slab.

収録刊行物

  • Geology

    Geology 32 (4), 361-, 2004

    Geological Society of America

被引用文献 (11)*注記

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詳細情報 詳細情報について

  • CRID
    1361418520644982016
  • DOI
    10.1130/g20261.2
  • ISSN
    00917613
  • データソース種別
    • Crossref
    • OpenAIRE

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