CCPortal
DOI10.1029/2020JB020345
S-Velocity Mantle Structure of East Asia From Teleseismic Traveltime Tomography: Inferred Mechanisms for the Cenozoic Intraplate Volcanoes
Kim Y.-W.; Chang S.-J.; Witek M.; Ning J.; Wen J.
发表日期2021
ISSN21699313
卷号126期号:3
英文摘要Clusters of Cenozoic volcanoes are found in Korea and Northeast China away from plate boundaries, but the mechanisms responsible for their formation is still unknown. To resolve this issue, we derive an S-wave velocity model of the upper mantle structure beneath East Asia using 131,947 S-wave relative traveltimes from 974 earthquakes recorded at 1,948 seismic stations in China, Korea, Taiwan, and Japan. Our results show that low-velocity anomalies beneath Mt. Baekdu (Changbaishan) and Jeju Island extend to the bottom of the mantle transition zone (MTZ) through slab gaps in the stagnant Pacific slab. On the other hand, low-velocity anomalies beneath the Datong volcanic field are observed to connect to the edge of the stagnant Pacific slab, which may be attributed to subduction-triggered upwelling or deep dehydration from the hydrous MTZ perturbed by subducting slabs. Furthermore, tilted high-velocity anomalies are found all the way down to the MTZ beneath the Great Xing'an Range and the Songliao basin, which may indicate delaminated lithosphere. The intraplate volcanoes north of the Songliao basin, such as the Wudalianchi and Halaha volcanoes, are located just above the delaminated bodies, thereby implying that decompression melting after delamination may be responsible for the intraplate volcanoes. Therefore, the dominant origin of intraplate volcanoes in East Asia may be subduction-related hot upwelling, complemented by shallow origins such as edge-driven convection and lithospheric delamination. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词delamination; East Asia; intraplate volcano; stagnant slab; traveltime tomography
语种英语
来源期刊Journal of Geophysical Research: Solid Earth
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/187318
作者单位Department of Geophysics, Kangwon National University, Chuncheon, South Korea; School of Earth and Space Sciences, Peking University, Beijing, China
推荐引用方式
GB/T 7714
Kim Y.-W.,Chang S.-J.,Witek M.,et al. S-Velocity Mantle Structure of East Asia From Teleseismic Traveltime Tomography: Inferred Mechanisms for the Cenozoic Intraplate Volcanoes[J],2021,126(3).
APA Kim Y.-W.,Chang S.-J.,Witek M.,Ning J.,&Wen J..(2021).S-Velocity Mantle Structure of East Asia From Teleseismic Traveltime Tomography: Inferred Mechanisms for the Cenozoic Intraplate Volcanoes.Journal of Geophysical Research: Solid Earth,126(3).
MLA Kim Y.-W.,et al."S-Velocity Mantle Structure of East Asia From Teleseismic Traveltime Tomography: Inferred Mechanisms for the Cenozoic Intraplate Volcanoes".Journal of Geophysical Research: Solid Earth 126.3(2021).
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
[Kim Y.-W.]的文章
[Chang S.-J.]的文章
[Witek M.]的文章
百度学术
百度学术中相似的文章
[Kim Y.-W.]的文章
[Chang S.-J.]的文章
[Witek M.]的文章
必应学术
必应学术中相似的文章
[Kim Y.-W.]的文章
[Chang S.-J.]的文章
[Witek M.]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。