DOI: 10.1016/j.tecto.2020.228514
论文题名: Lithospheric thermal regime under the Qinling Orogenic Belt and the Weihe Basin: A transect across the Yangtze and the North China cratons in central China
作者: Xu W. ; Li Y. ; Zhou L. ; Ke T. ; Cheng L.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 789 语种: 英语
中文关键词: Central China
; Lithospheric rheological structure
; Lithospheric thermal thickness
; Qinling orogenic belt
; Thermal structure
英文关键词: Geodynamics
; Heat transfer
; Metamorphic rocks
; Continental collisions
; Lithospheric structure
; North China Craton
; Qinling orogenic belts
; Rheological characteristics
; Seismic reflections
; Thermal regimes
; Thermal structure
; Structural geology
; continental collision
; crustal structure
; extensional tectonics
; geodynamics
; Indian plate
; lithospheric structure
; mantle structure
; orogenic belt
; plate convergence
; rifting
; thermal regime
; China
; North China Block
; Ordos Basin
; Sichuan Basin
; Wei Basin
; Yangtze Platform
; Calluna vulgaris
英文摘要: The thermal regime of the lithosphere could be a clue for the processes of geodynamics. Based on the Yuquan-Yulin seismic reflection transect along the Sichuan Basin (Yangtze Craton)–Qinling Orogenic Belt (QOB)–Weihe Basin–Ordos Basin (North China Craton), we modified crustal and mantle lithospheric structures to fit the observed data such as elevation, gravity, geoid height, and heat flow. Then we studied thermal structure, lithospheric thermal thickness and rheological structure of this area. The results suggest that the Moho temperature along the transect ranges from 580 to 740 °C; the thickness of the thermal lithosphere varies from 70 to 190 km. The rheological strength is characterized by the rheological characteristics of “weak crust-strong mantle” in the Sichuan Basin, the south QOB and the Ordos Basin, and “strong crust–weak mantle” in the north QOB and Weihe Basin. The Sichuan Basin has the lowest heat flow, the thickest lithosphere, and the strongest lithospheric strength, while the north QOB and Weihe Basin have the highest heat flow, the thinnest lithosphere, and the weakest lithosphere. The thermal regime of the Sichuan and Ordos basins is affected by the stability of the craton. The thermal regime of the QOB and Weihe Basin respond to the thermal effect of extensional/rifting tectonics. The thermal regime along the transect indicates that this area is mainly affected by the convergence caused by the continental collision of the Indian Plate. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170732
Appears in Collections: 气候变化与战略
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作者单位: Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China; Strategic Research Center of Oil and Gas Resources, Ministry of Natural Resources, Beijing, 100034, China
Recommended Citation:
Xu W.,Li Y.,Zhou L.,et al. Lithospheric thermal regime under the Qinling Orogenic Belt and the Weihe Basin: A transect across the Yangtze and the North China cratons in central China[J]. Tectonophysics,2020-01-01,789