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熱ルミネッセンス法による九重火山の噴火史の再検討(予報)(第 18回名古屋大学年代測定総合研究センターシンポジウム平成17(2005)年度報告)
Re-examination of Eruptive History of Kuju Volcano (SW Japan) by Thermoluminescence Dating : a Preliminary Report(Proceedings of the 18^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2005)
稲永, 康平
INENAGA, Kohei
奥野, 充
OKUNO, Mitsuru
高島, 勲
TAKASHIMA, Isao
鮎沢, 潤
AIZAWA, Jun
小林, 哲夫
KOBAYASHI, Tetsuo
open access
名古屋大学年代測定資料研究センター
本文データは学協会の許諾に基づきCiNiiから複製したものである
thermoluminescence age
eruptive history
Kyushu
Kuju Volcano
Kuju Volcano in central Kyushu, Japan, consists of many lava domes and lava flows of hornblende andesite composition, together with aprons of pyroclastic/debris flow deposits on its flanks. To re-examine the eruptive history of the volcano, we performed thermoluminescence (TL) dating for 9 samples from lavas and a lithic fragment of an ignimbrite samples. The obtained ages are 4.9±0.5 ka and 5.7±0.9 ka (weighted mean: 5.1±0.4 ka) for Taisen-minami lava, 22.3±6.2 ka for the summit lava dome of Kujusan, 68.0±3.1 ka for the main edifice of Kujusan, 75.6±7.0 ka for Ogigahana lava, 60.8±6.4 ka for Kutsukakeyama lava, 52.8±3.8 ka for Hosshozan lava, 25.8±1.6 ka for Hizengajo lava and 72.8±5.1 ka for a lithic fragment in the Handa ignimbrite. The 52 ka eruption age obtained for the Handa ignimbrite is estimated from the stratigraphic position between Aso-4 and Aira Tn ash. These TL ages suggest that the Ogigahana lava and the main edifice of Kujusan were formed before the Handa ignimbrite eruption (52 ka), and that immediately before/after the Handa ignimbrite eruption, Kutsukakeyama lava and Hosshozan lava were effused. Furthermore, the Hizengajo lava and the summit lava dome of Kujusan were formed near the summit of the volcano probably after the deposition of Aira Tn ash in 29 ka.
第18回名古屋大学年代測定総合研究センターシンポジウム平成17(2005)年度報告 Proceedings of the 18th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\
in 2005 日時:平成18 (2006)年1月17日(火)、18日(水) 会場:名古屋大学シンポジオン Date:Januaryl7th and 18th, 2006 Venue:Nagoya Uhiversity Symposion Hall
名古屋大学年代測定資料研究センター
2006-03
jpn
departmental bulletin paper
VoR
https://doi.org/10.18999/sumrua.17.92
http://hdl.handle.net/2237/13657
https://nagoya.repo.nii.ac.jp/records/11784
10.18999/sumrua.17.92
http://ci.nii.ac.jp/naid/110007150948/
名古屋大学加速器質量分析計業績報告書
17
92
101
https://nagoya.repo.nii.ac.jp/record/11784/files/KJ00005461832.pdf
application/pdf
510.4 kB
2018-02-20