학술논문
Geothermal potential in southern part of the Sanzugawa Caldera, Akita Prefecture, Northeast Japan / 秋田県三途川カルデラ南部域の地熱資源評価
Document Type
Journal Article
Author
Source
日本地熱学会誌 / Journal of the Geothermal Research Society of Japan. 2021, 43(2):65
Subject
Language
Japanese
ISSN
0388-6735
1883-5775
1883-5775
Abstract
Three types of hydrothermal alteration were identified in this area, which were neutral pH alteration consisted of montmorillonite, sericite and their mixed layered clay minerals, acid sulfate alteration composed of kaolinite and alunite, and alkaline alteration characterized by laumontite and wairakite. The latter two types of hydrothermal alterations were observed sporadically and correlated to low TL intensity.