DOI: 10.1016/j.tecto.2019.228310
论文题名: Diachronous uplift in intra-continental orogeny: 2D thermo-mechanical modeling of the India-Asia collision
作者: Bian S. ; Gong J. ; Chen L. ; Zuza A.V. ; Chen H. ; Lin X. ; Cheng X. ; Yang R.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 775 语种: 英语
中文关键词: Diachronous uplift
; Far-field stress transfer
; India-Asia collision
; Thermo-mechanical modeling
; Tian Shan
; West Kunlun
英文关键词: Deformation
; Thermomechanical treatment
; Diachronous uplift
; Far-field stress
; India-Asia collision
; Thermomechanical model
; Tian Shan
; West kunlun
; Structural geology
; arc-continent collision
; collision zone
; continental breakup
; continental collision
; deformation
; lithospheric structure
; tectonic setting
; two-dimensional modeling
; uplift
; China
; Kunlun Mountains
; Tien Shan
英文摘要: The Cenozoic India-Asia collision reactivated several ancient thrust belts in the interior of the Asian continent, including the West and East Kunlun ranges in central Tibet, and the Tian Shan and Qilian Shan further north. Both basin sedimentary records and thermochronological data show that the uplift of the South Tian Shan and Qilian Shan at the north occurred earlier than that of the West and East Kunlun ranges at the south. Diachronous continental deformation and initiation of uplift during orogeny are contrary to the general notion that the stress transfer in response to the India-Asia collision should propagate sequentially from south to north. Here we systematically conducted 2D thermo-mechanical simulations to investigate possible factors for this diachronous deformation pattern. The results show that a hotter Tian Shan lithosphere, with Moho temperature >100 °C hotter than that of the proto-southern Asia, leads to an earlier and higher uplift of the Tian Shan. Additionally, a faster convergence rate of the India-Asia collision results in a more efficient transfer of boundary force into the upper plate's interior, giving rise to a larger amount of uplift in the Tian Shan. We conclude that intra-continental ranges with weaker lithosphere, such as the Tian Shan or Qilian Shan, uplift earlier than stronger regions, such as the West and East Kunlun ranges. Faster convergence rates amplify this situation. Our results imply that the unique diachronous growth of the Tibetan plateau arises from its complex pre-collisional history, which includes collided arc-continent terranes with hotter and weaker lithosphere that respond to the effects of far-field stress transfer. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170549
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China; Research Center for Structures in Oil and Gas Bearing Basins, Ministry of Education, Hangzhou, 310027, China; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; Nevada Bureau of Mines and Geology, University of Nevada, Reno, NV 89557, United States
Recommended Citation:
Bian S.,Gong J.,Chen L.,et al. Diachronous uplift in intra-continental orogeny: 2D thermo-mechanical modeling of the India-Asia collision[J]. Tectonophysics,2020-01-01,775