Author's Organization：Institute of Earth Science,School of Education,Waseda University Institute of Natural Resources,School of Science & Engineering,Waseda University Mitsui Mining & Smelting Co.,Ltd., Moroyama Senior High School Institute of Earth Science,School of Education,Waseda University
Published: January 15, 1988Received: August 17, 1997Available on J-STAGE: April 11, 2008Accepted: November 18, 1987
Advance online publication: -
Revised: -
