シラス中の粘土鉱物 : 特にシラス崖くずれ予知の見地から

概要

論文の詳細を見る
Clay minerals in the Shirasu (non-welded pumice flow deposits) which is widely distributed in Kagoshima Prefecture were studied. Clay minerals and included only in the surface part of the Shirasu cliffs, and they are classified into two groups by their clay mineral association ; 1) a group mainly composed of 10Å halloysite, 2) a group including montmorillonite, illite, and irregular mixed layer mineral of kaolin/montmorillonite. Considerable amounts of clay minerals are included in the fallen parts of the Shirasu after collapse of the cliffs, wheras very few amounts or none of clay minerals are included in the remained parts of the Shirasu cliffs. This fact suggests the possibility of foreseeing a certain failures of natural or cut slopes of the Shirasu by estimating the amount of clay minerals included in the surface parts of the Shirasu cliffs.
日本粘土学会の論文
1976-06-25