| DOI: | 10.1029/2012GL054328
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| 论文题名: | Seismic anisotropy of subducting oceanic uppermost mantle from fossil spreading |
| 作者: | Audet P.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9389
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| EISSN: | 1944-9120
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| 出版年: | 2013
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| 卷: | 40, 期:1 | | 起始页码: | 173
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| 结束页码: | 177
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| 语种: | 英语
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| Scopus关键词: | Flow induced alignment
; Mantle deformation
; Receiver functions
; Seismic anisotropy
; Serpentine minerals
; Shear wave splitting
; Strong anisotropy
; Uppermost mantle
; Anisotropy
; Olivine
; Serpentine
; Tectonics
; deformation mechanism
; forearc basin
; olivine
; S-wave
; seismic anisotropy
; serpentine
; slab
; subduction zone
; upper mantle
; Cascadia Subduction Zone
; China
; Costa Rica
; Mexico [North America]
; Nankai
; Pacific Ocean
; Tianjin
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| 英文摘要: | Identifying the sources of seismic anisotropy in subduction zone forearcs is key to understanding mantle deformation processes. Current models based on the interpretation of shear-wave splitting measurements favor the flowinduced alignment of olivine crystals around down-going slabs or the presence of foliated serpentine minerals due to subduction-related processes, thereby neglecting fossil slab fabric as a significant source of anisotropy. We use seismic receiver functions to show evidence for strong anisotropy within anhydrous uppermost mantle of subducting oceanic plates in the forearcs of Nankai, Cascadia, Mexico, and Costa Rica subduction zones. Seismic anisotropy models from the inversion of receiver function waveforms are consistent with fossil fabric generated at spreading ridges. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84874898170&doi=10.1029%2f2012GL054328&partnerID=40&md5=06ef4b64b82a7a22b75de3c794559f55
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6653
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Earth Sciences, University of Ottawa, Ottawa, ON, Canada
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| Recommended Citation: | |
Audet P.. Seismic anisotropy of subducting oceanic uppermost mantle from fossil spreading[J]. Geophysical Research Letters,2013-01-01,40(1).
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