| Item type |
文献 / Documents(1) |
| 公開日 |
2022-11-02 |
| アクセス権 |
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|
アクセス権 |
open access |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版社版DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.5026/jgeography.111.5_661 |
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|
言語 |
ja |
|
|
関連名称 |
10.5026/jgeography.111.5_661 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
中央構造線活断層系三野断層の最新活動時期 |
|
言語 |
ja |
| タイトル別表記 |
|
|
その他のタイトル |
Latest Rupture Event of the Mino Fault, the Median Tectonic Line Active Fault System, in East Shikoku, Southwest Japan |
|
言語 |
en |
| 著者 |
森野, 道夫
岡田, 篤正
中田, 高
松波, 孝治
日下, 雅義
村田, 明広
水野, 清秀
能見, 忠歳
谷野宮, 恵美
池田, 小織
吉田, 堯史
原, 郁夫
|
| 抄録 |
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|
内容記述タイプ |
Abstract |
|
内容記述 |
The Median Tectonic Line (MTL) active fault system is one of the most active intraplate faults in Japan. The fault system, which is more than 300 km long, is a right-lateral strike-slip fault with an average slip rate of 5-10 mm/y in east Shikoku. The 13.5-km-long Mino fault of the MTL active fault system is located at the western part of Tokushima Prefecture in east Shikoku. We carried out trench excavation surveys of the Mino fault at Ueno in Mino Town and Ikenoura in Mima Town. Both sites are situated at fault depressions formed on the middle and lower terrace surfaces by the activity of the Mino fault. Fault depression deposits consist of younger and finer grained layers with abundant 14C dating samples. We inferred the dates of faulting events from upward fault terminations on the trench walls.
At Ueno, it is recognized that the latest rupture event occurred between 1, 295-1, 390 cal A.D. and 1, 660-1, 950 cal A.D. (190 ± 50 years B.P.). Multiple faulting events are also suggested after K-Ah ash fall (about 5, 200 B.C.), because the ash layer steepens to near vertical. At Ikenoura, the latest rupture event is estimated to have occurred after 1, 525-1, 660 cal A.D.
Taking account of the previous reports on the eastern extension at Chichio and Zunden faults, we conclude that the MTL active fault system in east Shikoku ruptured in the 16th century A.D. or later. The liquefactions, which occurred between the latter half of the 16th century A.D. and the beginning of the 17th century A.D., are recognized at archaeological sites at Maruyama and Ogaki in the western part of Tokushima Prefecture. These sites are located immediately south of the Mino fault and the Ikeda fault to the west. This fact suggests that the liquefactions were caused by faulting of the MTL active fault system in east Shikoku. |
|
言語 |
en |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
the Median Tectonic Line |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
active fault |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Mino fault |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
trench excavation survey |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
K-Ah ash |
| キーワード |
|
|
言語 |
ja |
|
主題Scheme |
Other |
|
主題 |
中央構造線 |
| キーワード |
|
|
言語 |
ja |
|
主題Scheme |
Other |
|
主題 |
活断層 |
| キーワード |
|
|
言語 |
ja |
|
主題Scheme |
Other |
|
主題 |
三野断層 |
| キーワード |
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|
言語 |
ja |
|
主題Scheme |
Other |
|
主題 |
トレンチ調査 |
| キーワード |
|
|
言語 |
ja |
|
主題Scheme |
Other |
|
主題 |
鬼界アカホヤ火山灰 |
| 書誌情報 |
ja : 地学雑誌
en : Journal of Geography
巻 111,
号 5,
p. 661-683,
発行日 2002-10-25
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0022135X |
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
18840884 |
| 収録物ID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN00322536 |
| 出版者 |
|
|
出版者 |
東京地学協会 |
|
言語 |
ja |
| EID |
|
|
識別子 |
61193 |
|
識別子タイプ |
URI |
| 言語 |
|
|
言語 |
jpn |
jgeog_111_5_661.pdf (7.68 MB)
