Source and path of magma for volcanoes in the subduction zone of northeastern Japan

M. Wyss, A. Hasegawa, J. Nakajima

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

Abstract

The assumption that the source of magma for volcanoes in subduction zones is located in the mantle immediately above the top of the subducting slab, at approximately 100 km depth and straight beneath the volcanoes is incorrect in northeastern Japan. The combination of evidence from velocity tomography in the mantle wedge above the slab and mapping of earthquake size distribution within it strongly points to a source of fluids at the top of the slab at 140 to 150 km depth, from where material rises along an inclined path to the volcanoes.

Original languageEnglish
Pages (from-to)1819-1822
Number of pages4
JournalGeophysical Research Letters
Volume28
Issue number9
DOIs
Publication statusPublished - 2001 May 1

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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