DOI: 10.1016/j.epsl.2018.01.024
Scopus记录号: 2-s2.0-85044395591
论文题名: Present-day crustal deformation and strain transfer in northeastern Tibetan Plateau
作者: Li Y. ; Liu M. ; Wang Q. ; Cui D.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 487 起始页码: 179
结束页码: 189
语种: 英语
英文关键词: extrusion tectonics
; GPS
; leveling
; strain partition
; Tibetan Plateau
Scopus关键词: Deformation
; Extrusion
; Fault slips
; Global positioning system
; Leveling (machinery)
; Shear strain
; Strike-slip faults
; Structural geology
; Crustal deformations
; Extrusion tectonics
; Multi-scale wavelet
; Northeastern tibetan plateaux
; Strain partition
; Strain partitioning
; Tectonic extrusion
; Tibetan Plateau
; Strain rate
; crustal deformation
; extrusion
; GPS
; leveling
; strain partitioning
; strain rate
; tectonics
; China
; Haiyuan Fault Zone
; Ningxia Huizu
; Qinghai-Xizang Plateau
英文摘要: The three-dimensional present-day crustal deformation and strain partitioning in northeastern Tibetan Plateau are analyzed using available GPS and precise leveling data. We used the multi-scale wavelet method to analyze strain rates, and the elastic block model to estimate slip rates on the major faults and internal strain within each block. Our results show that shear strain is strongly localized along major strike-slip faults, as expected in the tectonic extrusion model. However, extrusion ends and transfers to crustal contraction near the eastern margin of the Tibetan Plateau. The strain transfer is abrupt along the Haiyuan Fault and diffusive along the East Kunlun Fault. Crustal contraction is spatially correlated with active uplifting. The present-day strain is concentrated along major fault zones; however, within many terranes bounded by these faults, intra-block strain is detectable. Terranes having high intra-block strain rates also show strong seismicity. On average the Ordos and Sichuan blocks show no intra-block strain, but localized strain on the southwestern corner of the Ordos block indicates tectonic encroachment. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110003
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Second Monitoring and Application Center, China Earthquake Administration, Xi'an, China; Department of Geological Science, University of Missouri, Columbia, MO, United States; Laboratory of Computational Geodynamics, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Li Y.,Liu M.,Wang Q.,et al. Present-day crustal deformation and strain transfer in northeastern Tibetan Plateau[J]. Earth and Planetary Science Letters,2018-01-01,487