Eruption age of Kannabe volcano using multi-dating : Implications for age determination of young basaltic lava flow

Material type: 文書・図像類

Author: Yorinao, Shitaokaほか

Publisher: De Gruyter company

Publication date: 2019-04

Material Format: Digital

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Note (General)：: We estimated the eruption age of Kannabe volcano, located in southwestern Japan. Alt-hough the eruption age had been estimated using tephrochronology ...

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Material Type: 文書・図像類
Title: Eruption age of Kannabe volcano using multi-dating : Implications for age determination of young basaltic lava flow
Author/Editor: Yorinao, Shitaoka
Takeshi, Saito
Junji, Yamamoto
Masaya, Miyoshi
Hidemi, Ishibashi
Tsutomu, Soda
Author Heading: Yorinao, Shitaoka
Takeshi, Saito
Junji, Yamamoto
Masaya, Miyoshi
Hidemi, Ishibashi
Tsutomu, Soda
Publication, Distribution, etc.: De Gruyter company
Publication Date: 2019-04
Publication Date (W3CDTF): 2019-04
Periodical title: Geochronometria
No. or year of volume/issue: 46 1
Volume: 46
Issue: 1
Pages: 49-56
ISSN (Periodical Title): ISSN : 1897-1695
ISSN : 1733-8387
Text Language Code: eng
Subject Heading: eruption age
Kannabe volcano
multi-dating
OSL dating
paleomagnetic dating
Target Audience: 一般
Note (General): We estimated the eruption age of Kannabe volcano, located in southwestern Japan. Alt-hough the eruption age had been estimated using tephrochronology and K-Ar dating, the precision of its age determination left some room for improvement. The latest eruption age of Kannabe volcano is well constrained by wide spread tephras to ca. 7.2–30 ka. We applied paleomagnetic dating to a ba-saltic lava and optically stimulated luminescence (OSL) dating to a soil layer, which are associated with the Kannabe volcano. The soil layer above the Kannabe scoria was newly dated to be 21 ± 6 ka, as inferred from OSL dating. We also made paleomagnetic investigation to estimate the eruption age of the Kannabe basaltic lava. Paleomagnetic data of 23 rock samples from six locations in the Kanna-be basaltic lava showed good mutual agreement. The average of remanent magnetizations yields dec-lination of 0.3° and inclination of 65.9° with 95% confidence limit of 2.7°. This paleomagnetic direc-tion with a relatively steep inclination is thought to be correlated with the paleomagnetic secular vari-ation data of sediments in Lake Biwa at ca. 21.5 ka. Based on that information from multi-dating, we inferred that the Kannabe volcano erupted at ca. 22 ka. This result presents profound scientific impli-cations for the precise age determination of young basaltic lava flow, for which few dating methods exist.
Source: https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=24668&item_no=1&attribute_id=22&file_no=1
https://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=24668&item_no=1&attribute_id=22&file_no=1
Access Restrictions: 限定公開
Related Material (DOI): 10.1515/geochr-2015-0108
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ