Velocity and Anisotropic Structure of the Uppermost Mantle Beneath Central America and Northwestern South America From Pn Tomography
文献类型：期刊论文
| 作者 | Lu, Yan1,2,3; Li, Juan1,2,3; He, Yuhui1,2,3; Zhao, Lian-Feng1,2,3; Zhang, Jinhai1,2,3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2022-04-01 |
| 卷号 | 127期号:4页码:11 |
| 关键词 | Pn velocity anisotropy uppermost mantle tomography |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2021JB023643 |
| 英文摘要 | We constructed the first Pn velocity and anisotropy model of the uppermost mantle in Central America and northwestern South America using the Pn tomography method and new ISC-EHB data. Significantly low Pn velocities and arc-parallel anisotropic structures are observed beneath the volcanic arc in Central America. The separate, low Pn velocity beneath the back-arc volcano in Nicaragua shows that the hot material upwelling in the uppermost mantle beneath this volcano is likely separated from the main volcanic arc. The stable Caribbean Plate is characterized by high Pn velocities. The southward subduction and dehydration of the Caribbean Plate seem to be potential causes of the low Pn velocities in eastern Panama. Based on our Pn velocity, anisotropy and previous geological observations, we suggest a dynamic model of the Colombia-Ecuador region including mantle flow and magmatic gap: there is arc-parallel anisotropy in the uppermost mantle beneath the Colombia-Ecuador volcanic arc, arc-perpendicular mantle flow in the deeper mantle beneath the subducted plate, and a magmatic gap near the Caldas Tear. |
| WOS关键词 | TECTONIC EVOLUTION ; PARALLEL FLOW ; COSTA-RICA ; SUBDUCTION ; ZONE ; DEFORMATION ; ARC ; COLLISION ; DYNAMICS ; CRUSTAL |
| 资助项目 | National Natural Science Foundation of China[41874066] ; National Natural Science Foundation of China[41674066] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201904] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000776573200001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/105062]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Lu, Yan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yan,Li, Juan,He, Yuhui,et al. Velocity and Anisotropic Structure of the Uppermost Mantle Beneath Central America and Northwestern South America From Pn Tomography[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2022,127(4):11. |
| APA | Lu, Yan,Li, Juan,He, Yuhui,Zhao, Lian-Feng,&Zhang, Jinhai.(2022).Velocity and Anisotropic Structure of the Uppermost Mantle Beneath Central America and Northwestern South America From Pn Tomography.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,127(4),11. |
| MLA | Lu, Yan,et al."Velocity and Anisotropic Structure of the Uppermost Mantle Beneath Central America and Northwestern South America From Pn Tomography".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 127.4(2022):11. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
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。