Splitting of the Philippine Sea Plate and a magma chamber beneath Mt. Fuji

Koki Aizawa, Ryokei Yoshimura, Naoto Oshiman

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Mt. Fuji is located in a tectonically unique area, but various aspects of the structure have not been fully explained. Here we show the results from a magnetotelluric survey across Mt. Fuji along a 70 km observation line. The profile shows that a conductive body is located between two resistive bodies at depths greater than 15 km. Low frequency earthquakes occur above the conductor. We interpret these results in a model where beneath Mt. Fuji, the subducting Philippine Sea Plate is split into two parts, and a magma chamber is located in the gap. Due to this unique structure, Mt. Fuji may be able to sustain a high basalt magma flux throughout its entire history.

Original languageEnglish
JournalGeophysical Research Letters
Volume31
Issue number9
DOIs
Publication statusPublished - May 16 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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