Glacial landforms on the Takanegahara Plateau of the central Daisetsuzan Mountains

Abstract

On the Takanegahara Plateau (1700 - 2000m a.s.l.) in the Daisetsuzan Mountains of central Hokkaido, the small hill about 10 m high which is formed from the sediment and the boulders in several meters which are disharmonious in size compared with the peripheral detritus in tens of centimeters are distributed. These landform and sediments are caused by past glaciations; because the origin of them isn’t explained by present agency. It seems that some of them were formed in colder period in Holocene based on the age of tephra in the sediments.