Author's Organization：Department of Earth Science and Astronomy,College of Arts and Sciences,The University of Tokyo Geological Institute,Faculty of Science,The University of Tokyo Geological Institute,Faculty of Science,The University of Tokyo Department of Earth Science and Astronomy,College of Arts and Sciences,The University of Tokyo Department of Earth Science and Astronomy,College of Arts and Sciences,The University of Tokyo
Published: June 15, 1987Received: September 12, 1986Available on J-STAGE: April 11, 2008Accepted: March 16, 1987
Advance online publication: -
Revised: -
