Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090555 |
Modification of crust and mantle lithosphere beneath the southern part of the eastern North American passive margin | |
Cong Li; Haiying Gao | |
2021-08-10 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The eastern North American passive margin was modified by Mesozoic rifting. Seismic data from recent deployment of onshore and offshore stations offer a unique opportunity for studying the signature of syn- and post-rifting in lithospheric structures. Using full-wave ambient noise tomography, we construct a new seismic velocity model for the lithosphere of the southeastern United States. Our model confirms an oceanic-continental transitional crust over a ∼70 km wide zone across the coastline. Our model reveals 1) a patch of lower-than-average mantle lithospheric velocities underlying this transitional crust and 2) a low-velocity column in the mantle lithosphere beneath the Virginia volcanoes. We propose that anomaly 1 represents cooled enriched mantle that underplated the thinning crust during the initial stages of rifting around 230 Ma. Anomaly 2 likely has a more recent origin in the Eocene and may result from an asthenospheric upwelling induced by a localized lithospheric delamination. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/335830 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Cong Li,Haiying Gao. Modification of crust and mantle lithosphere beneath the southern part of the eastern North American passive margin[J]. Geophysical Research Letters,2021. |
APA | Cong Li,&Haiying Gao.(2021).Modification of crust and mantle lithosphere beneath the southern part of the eastern North American passive margin.Geophysical Research Letters. |
MLA | Cong Li,et al."Modification of crust and mantle lithosphere beneath the southern part of the eastern North American passive margin".Geophysical Research Letters (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 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Cong Li]的文章 |
[Haiying Gao]的文章 |
百度学术 |
百度学术中相似的文章 |
[Cong Li]的文章 |
[Haiying Gao]的文章 |
必应学术 |
必应学术中相似的文章 |
[Cong Li]的文章 |
[Haiying Gao]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。
修改评论