A PALYGORSKITE VEIN FOUND IN CONGLOMERATE OF THE UPPER EOCENE-LOWER OLIGOCENE RIKUBETSU FORMATION IN NORTHEASTERN HOKKAIDO, JAPAN

HIROYUKI MAEDA; YUTAKA FUKUSHIMA; HIROSHI NAYA; YASUHIKO YAMAMOTO; MASANORI KOHNO

doi:10.11362/jcssjclayscience.16.1_15

HIROYUKI MAEDA, YUTAKA FUKUSHIMA, HIROSHI NAYA, YASUHIKO YAMAMOTO, MASANORI KOHNO

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Keywords: Palygorskite vein, Futamata Andesites, Hydrothermal system, Rikubetsu Formation

JOURNAL FREE ACCESS

2012 Volume 16 Issue 1 Pages 15-18

DOI https://doi.org/10.11362/jcssjclayscience.16.1_15

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Abstract

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.

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