Climate Change Data Portal
DOI | 10.1130/B31900.1 |
Tectonics, structure, and resurgence of the largest Quaternary caldera in Japan: Kutcharo, Hokkaido | |
Goto Y.; McPhie J. | |
发表日期 | 2018 |
ISSN | 167606 |
起始页码 | 1307 |
结束页码 | 1322 |
卷号 | 130期号:2021-07-08 |
英文摘要 | Kutcharo is the largest Quaternary caldera in Japan and one of the youngest worldwide. It is subcircular, with a diameter of 20-26 km, and was formed by repeated rhyolitic explosive eruptions from 340 to 35 ka. Kutcharo has a previously unrecognized resurgent dome (10-12 km across, 360 m high) that was produced by reinflation of the underlying magma chamber between 28 and 23 ka. The resurgent dome consists of uplifted intracaldera lacustrine deposits and overlying dacite lavas and is transected by an L-shaped graben 3 km wide. A rhyolite lava and 11 rhyolite lava domes occur around the resurgent dome and within the graben. The architecture of Kutcharo caldera closely resembles that of well-understood resurgent calderas such as Valles caldera and Long Valley caldera. Geochronological data indicate that caldera resurgence occurred within ~10 k.y. after caldera collapse, i.e., much faster than other calderas where the timing of resurgence is known. Kutcharo has shown signs of unrest (earthquakes and ground deformation) since A.D. 1938. Seismic, geodetic, geothermal, and resistivity data all suggest that magma occurs at depth beneath the resurgent dome. Kutcharo is located at the intersection of two regional faults that accommodate the ongoing movement of the Kuril forearc sliver, caused by oblique subduction of the Pacific plate. The structure and activity of the resurgent dome are linked to this tectonic setting. Kutcharo has the potential for future volcanic eruptions. Our new view of the architecture of the Kutcharo caldera provides invaluable information for hazard assessment of resurgent calderas. © 2018 The Authors. |
语种 | 英语 |
来源期刊 | Bulletin of the Geological Society of America
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/185012 |
作者单位 | College of Environmental Technology, Muroran Institute of Technology, Mizumoto-cho 27-1, Muroran, Hokkaido, 050-8585, Japan; School of Physical Sciences, University of Tasmania, Hobart, TAS 7001, Australia |
推荐引用方式 GB/T 7714 | Goto Y.,McPhie J.. Tectonics, structure, and resurgence of the largest Quaternary caldera in Japan: Kutcharo, Hokkaido[J],2018,130(2021-07-08). |
APA | Goto Y.,&McPhie J..(2018).Tectonics, structure, and resurgence of the largest Quaternary caldera in Japan: Kutcharo, Hokkaido.Bulletin of the Geological Society of America,130(2021-07-08). |
MLA | Goto Y.,et al."Tectonics, structure, and resurgence of the largest Quaternary caldera in Japan: Kutcharo, Hokkaido".Bulletin of the Geological Society of America 130.2021-07-08(2018). |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Goto Y.]的文章 |
[McPhie J.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Goto Y.]的文章 |
[McPhie J.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Goto Y.]的文章 |
[McPhie J.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。