Periglacial Phenomena on the South Hakkôda Mountains

Abstract

The author and his collaborators have been studying moors and other features seen on the South Hakkôda Mountains, Aomori Prefecture.In this paper, the author reports some periglacial and nival morphology there.1. Such characteristic features are densely developed on the swampy slope (photo 1) along a ridge extending to the south-east from the top of Kushigamine, the highest peak within the mountains.2. At the highest part of the swampy slope, undulating landforms (photo 2) are distributed; they may be earth hummocks. A C-14 date suggests the ages of two volcanic ash layers underlying the surface are about 1, 400yrs. B. P. and 3, 000yrs. B. P. respectively.3. Below the just-mentioned part, a nivation niche is developed. Stone-banked terraces are formed within the niche (photo 3).