| DOI: | 10.1002/grl.50369
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| 论文题名: | B-type olivine fabric and mantle wedge serpentinization beneath the Ryukyu arc |
| 作者: | McCormack K.; Wirth E.A.; Long M.D.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9109
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| EISSN: | 1944-8840
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| 出版年: | 2013
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| 卷: | 40, 期:9 | | 起始页码: | 1697
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| 结束页码: | 1702
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| 语种: | 英语
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| 英文关键词: | receiver functions
; Ryukyu
; seismic anisotropy
; serpentinite
; subduction zone
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| Scopus关键词: | Receiver functions
; Ryukyu
; Seismic anisotropy
; Serpentinite
; Subduction zones
; Anisotropy
; Tectonics
; Olivine
; forward modeling
; olivine
; seismic anisotropy
; serpentinite
; serpentinization
; slab
; subduction zone
; Japan
; Ryukyu Islands
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| 英文摘要: | Subduction is a fundamental Earth process, yet many aspects of subduction systems remain to be fully understood. Here we present anisotropic receiver function (RF) analysis to characterize the structure of the mantle wedge beneath the Ryukyu subduction zone. Radial and transverse P-to-S RFs computed for eight broadband stations yield evidence for coherent P-to-SV conversions originating at the top of the subducting slab. We also observe conversions on the transverse component RFs that are consistent with the presence of multiple anisotropic layers, with structure varying significantly along strike. Forward modeling of observations at station ZMM in the center of the Ryukyu arc yields evidence for a ~6 km thick layer of strongly anisotropic material, most likely serpentinite, directly above the subducting slab and likely B-type olivine fabric in the shallow mantle wedge. Key PointsCompute P-to-S receiver functions for eight stations in the Ryukyu arcThin layer of serpentinized mantle directly above the subducting slabEvidence for B-type olivine fabric in the shallow mantle wedge ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879082605&doi=10.1002%2fgrl.50369&partnerID=40&md5=732d173f66cf963210d9875322fd4e0a
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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/6373
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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 and Ocean Sciences, University of South Carolina, Columbia SC, United States
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| Recommended Citation: | |
McCormack K.,Wirth E.A.,Long M.D.. B-type olivine fabric and mantle wedge serpentinization beneath the Ryukyu arc[J]. Geophysical Research Letters,2013-01-01,40(9).
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