地球科学
Online ISSN : 2189-7212
Print ISSN : 0366-6611
山陰東部,神鍋火山群及び近傍の玄武岩質単成火山のK-Ar年代
古山 勝彦長尾 敬介笠谷 一弘三井 誠一郎
著者情報
ジャーナル オープンアクセス

1993 年 47 巻 5 号 p. 377-390

詳細
抄録

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.

著者関連情報
© 1993 地学団体研究会
前の記事 次の記事
feedback
Top