著者

及川 輝樹 谷 健一郎

出版者

特定非営利活動法人 日本火山学会

雑誌

火山 (ISSN:04534360)

巻号頁・発行日

vol.65, no.3, pp.83-87, 2020-09-30 (Released:2020-10-13)

参考文献数

18

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The activity of Toshima Volcano, Izu Islands in Japan, is divided into two stages: younger (the lava flows of parasitic craters) and older (the main stratovolcano) stages. The 14C age of “Kajiana” crater lava, the earliest lava of the younger stage, was approximately 11 ka (cal BP). Based on the results of radiocarbon dating and topographic analysis, we conclude that all three magmatic eruptions of the younger stage of Toshima Volcano occurred during the Holocene.