滿洲及び華北の礬土頁岩
スポンサーリンク
概要
- 論文の詳細を見る
This is a sort of shale which contains minute grains of diaspore besides kaolinite.<BR>There are nine layers of “aluminous shales” in permo-Carboniferous beds, which cover Ordovician limestone unconformably, and the layers are classified as A, B, C, D, E, F and G from upper to lower.<BR>The shale is composed of kaolinite, diaspore, nontronite, rutile, sporogelite, halloysite, chlor-opal, and doelterite, and the granularities of crystals are as follows.
- 社団法人 東京地学協会の論文