A PALYGORSKITE VEIN FOUND IN CONGLOMERATE OF THE UPPER EOCENE-LOWER OLIGOCENE RIKUBETSU FORMATION IN NORTHEASTERN HOKKAIDO, JAPAN
2012 年 16 巻 1 号 p. 15-18
詳細
2012 年 16 巻 1 号 p. 15-18
Palygorskite was found as a clay vein in the Futamata area in northeastern Hokkaido, Japan. A light yellowish pink palygorskite vein was observed within a vertical joint in conglomerate of the Upper Eocene-Lower Oligocene Rikubetsu Formation in the Futamata landslide area. The palygorskite is considered to have crystallized from a low-temperature hydrothermal solution related to the volcanic activity of the Lower Oligocene Futamata Andesites.
