Author's Organization:Department of Earth and Planetary Sciences,Graduate School of Science,Hokkaido university Hobetsu Museum Department of Earth and Planetary Sciences,Graduate School of Science,Hokkaido university
Published: April 15, 1995Received: June 15, 1994Available on J-STAGE: April 11, 2008Accepted: January 30, 1995
Advance online publication: -
Revised: -