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Complicated crustal deformation beneath the NE margin of the Tibetan plateau and its adjacent areas revealed by multi-station receiver-function gathering
Xu, Xiaoming1,2,3; Niu, Fenglin2,4,5; Ding, Zhifeng1; Chen, Qifu3
2018-09-01
Source PublicationEARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
Volume497Pages:204-216
SubtypeArticle
AbstractWe use a multi-station stacking method to analyze receiver function data recorded by a large-scale dense seismic array covering the northeastern (NE) margin of the Tibetan plateau and its adjacent regions to estimate crustal thickness (H), Vp/Vs ratio (kappa) and crustal anisotropy (fast polarization direction phi and splitting time tau). For each station of the array, we gathered all the receiver functions recorded by the station and its nearby stations located inside a circle with a radius of 0.5 degrees. We applied the H-kappa stacking technique and the joint inversion scheme to a total of 654 station clusters to measure the (H, kappa) and (phi, tau), respectively. The measured Moho depth varies from a peak value of 67 km beneath the northern-central plateau to 39-45 km beneath the surrounding blocks in the northeast. The front of the depressed Moho beneath the plateau margin exhibits a complicated geometry, which suggests that when the Tibetan plateau encroached upon the surrounding terranes, the front expanded unevenly depending on the strength of the encountering terranes. The thickened crust beneath the margin also has a very low Vp/Vs ratio, indicating that the crust is composed largely of felsic minerals. More than one third of the station clusters (221) have a splitting time significantly larger than 0.2 s. The average splitting times of the 221 measurements is 0.68 s, which is comparable to those measured from the SKS/SKKS (XKS) phases (0.94 s). The fast directions estimated from the Moho Ps and XKS phases recorded by the station clusters within the margin are very similar, and are also approximately parallel to the strikes of major faults, sutures and thrust fronts in the area. The low Vp/Vs ratio, together with the observed fast polarization directions from the Moho Ps and XKS phases, suggests that shortening of the entire lithosphere orthogonal to the compressional direction is likely the main cause for the observed crustal thickening occurring at the margin. We also found that the Moho Ps and XKS recorded by stations inside the western Hetao basin and the Yinchuan basin present very different anisotropy, which may suggest that the crust and mantle beneath the two basins have very different deformation patterns. (C) 2018 Elsevier B.V. All rights reserved.
Keywordcluster analysis receiver function crustal anisotropy crustal deformation NE Tibet ChinaArray
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.epsl.2018.06.010
Funding OrganizationNational Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209)
WOS KeywordUPPER-MANTLE STRUCTURE ; SEISMIC ANISOTROPY ; NORTHEASTERN MARGIN ; POISSONS RATIO ; JOINT ANALYSIS ; EARTHS CRUST ; HEAT-FLOW ; SE TIBET ; CHINA ; TOMOGRAPHY
Indexed BySCI
Language英语
Funding OrganizationNational Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Key R&D Program of China(2017YFC1500303) ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; National Natural Science Foundation of China(41604074 ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; China National Special Fund for Earthquake Scientific Research in Public Interest Science(201308011) ; 41630209) ; 41630209) ; 41630209) ; 41630209)
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000440529100020
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/88147
Collection地球与行星物理院重点实验室
Corresponding AuthorNiu, Fenglin
Affiliation1.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China
2.Rice Univ, Dept Earth Environm & Planetary Sci, Houston, TX 77005 USA
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
4.China Univ Petr, State Key Lab Petr Resource & Prospecting, Beijing, Peoples R China
5.China Univ Petr, Unconvent Nat Gas Inst, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xu, Xiaoming,Niu, Fenglin,Ding, Zhifeng,et al. Complicated crustal deformation beneath the NE margin of the Tibetan plateau and its adjacent areas revealed by multi-station receiver-function gathering[J]. EARTH AND PLANETARY SCIENCE LETTERS,2018,497:204-216.
APA Xu, Xiaoming,Niu, Fenglin,Ding, Zhifeng,&Chen, Qifu.(2018).Complicated crustal deformation beneath the NE margin of the Tibetan plateau and its adjacent areas revealed by multi-station receiver-function gathering.EARTH AND PLANETARY SCIENCE LETTERS,497,204-216.
MLA Xu, Xiaoming,et al."Complicated crustal deformation beneath the NE margin of the Tibetan plateau and its adjacent areas revealed by multi-station receiver-function gathering".EARTH AND PLANETARY SCIENCE LETTERS 497(2018):204-216.
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