DOI: 10.1016/j.tecto.2021.228910
论文题名: Dynamical significance of the Tanlu Fault Zone in the destruction of the North China Craton: The evidence provided by the three-dimensional Magnetotelluric array study
作者: Ye G. ; Liu C. ; Luo X. ; Jin S. ; Wei W. ; Dong H. ; Yin Y.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2021
卷: 813 语种: 英语
中文关键词: Lithospheric destruction
; Magnetotellurics
; North China Craton
; Tanlu fault zone
; Three-dimensional resistivity model
英文关键词: Magnetotellurics
; Molten materials
; Strike-slip faults
; Lithospheric mantle
; Lithospheric thinning
; North China Craton
; Resistivity modeling
; Resistivity structure
; Strike-slip fault systems
; Structural constraints
; Tan Lu fault zone
; Structural geology
; craton
; electrical resistivity
; fault zone
; magnetotelluric method
; Mesozoic
; strike-slip fault
; three-dimensional modeling
; China
; North China Block
英文摘要: Due to the subduction of the Paleo-Pacific Plate below the East Asian continent, the North China Craton (NCC) is considered to have been thinned in the Mesozoic, with the lithosphere of its east portion significantly thinned. As the eastern boundary of the NCC, The Tanlu Fault Zone (TLFZ) is one of the largest strike-slip fault systems in eastern Asia. Tanlu is believed to have recorded the destabilization of the NCC. Magnetotelluric array data collected in the TLFZ and adjacent areas are obtained to image the lithospheric three-dimensional resistivity structure and to discuss the structural constraints on this event. According to the resistivity model from the three-dimensional inversion, the crust of the Luxi Uplift (LXU) to the west of the TLFZ and the crust of the Sulu Orogenic Belt (SOB) to the east of the TLFZ exhibits high resistivity (>300 Ωm). Lithospheric mantle of the SOB also exhibits highly resistive characteristics. Conversely, the LXU mantle showed distinct low-resistivity characteristics (C3). Low-resistivity anomalies were found corresponding to both branches of the TLFZ. The eastern branch is a lithospheric low-resistivity belt, while the western branch formed a significant mantle resistivity boundary between the low-resistivity LXU and the high-resistivity SOB. Thus, we considered that molten materials may have upwelled along the weak area of the western branch, inducing a significant lithospheric thinning beneath the LXU. On the other hand, the lithosphere of the SOB has not been significantly thinned according to its high resistivity. The significant contrast of the resistivity may indicate that the western branch of the TLFZ is the boundary between the NCC and the SOB, with the sinistral strike-slip occurring along it. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170933
Appears in Collections: 气候变化与战略
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作者单位: School of Geophysics and Information Technology, China University of Geosciences, Beijing, 100083, China; State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing, 100083, China; Xi'an Mineral Resource Survey Center of China Geological Survey, Xi'an, 710100, China; Shaoxing Design Institute of Conservancy and Hydroelectric Power, Hangzhou Branch, Hangzhou, 310000, China
Recommended Citation:
Ye G.,Liu C.,Luo X.,et al. Dynamical significance of the Tanlu Fault Zone in the destruction of the North China Craton: The evidence provided by the three-dimensional Magnetotelluric array study[J]. Tectonophysics,2021-01-01,813