Author's Organization：Department of Geology and Mineralogy,Faculty of Science,Hokkaido University Department of Geology and Mineralogy,Faculty of Science,Hokkaido University Department of Geology and Mineralogy,Faculty of Science,Hokkaido University
Published: September 15, 1988Received: March 02, 1988Available on J-STAGE: April 11, 2008Accepted: July 01, 1988
Advance online publication: -
Revised: -
