Author's Organization：Institute of Earth Science,School of Education,Waseda University Geological Survey of Japan Geological Survey of Japan Institute of Natural Resources,School of Science & Engineering,Waseda University
Published: May 15, 1989Received: November 24, 1988Available on J-STAGE: April 11, 2008Accepted: February 28, 1989
Advance online publication: -
Revised: -
