Author's Organization:Imakane Board of Education Department of Earth Science,Iwamizawa College,Hokkaido University of Education Department of Earth Science,Iwamizawa College,Hokkaido University of Education Geological Survey of Hokkaido
Published: October 15, 1994Received: April 05, 1994Available on J-STAGE: April 11, 2008Accepted: July 22, 1994
Advance online publication: -
Revised: -