Author's Organization:Geological Survey of Japan.,Geology Department Earth Science Laboratory,Faculty of School Education,Hiroshima University Geological Survey of Japan.,Geology Department Geological Survey of Japan.,Geological Museum
Published: June 15, 1993Received: January 13, 1993Available on J-STAGE: April 11, 2008Accepted: April 28, 1993
Advance online publication: -
Revised: -