- 著者
-
古山 勝彦
長尾 敬介
笠谷 一弘
三井 誠一郎
- 出版者
- 地学団体研究会
- 雑誌
- 地球科学 (ISSN:03666611)
- 巻号頁・発行日
- vol.47, no.5, pp.377-390, 1993-09-25 (Released:2017-06-06)
- 被引用文献数
-
4
K-Ar ages of 21 Quaternary basaltic rocks from the Kannabe Volcano Group and adjacent monogenetic volcanoes in the east San-in district were determined. In the Kannabe Volcano Group, the oldest ages, 0.7Ma, were gotten from the Nishiki Volcano. There was a long rest (about 0.5 Ma) of the volcanic activity after the eruption of the Nishiki Volcano. After that, from 0.22 Ma to recent, 6 volcanoes, if including adjacent volcanoes, 9 volcanoes, erupted intermittently. The east San-in district is the most active district of the basaltic volcanism in the San-in and Chugoku area, southwest Japan, in the present day.