scholarly journals Sandbox modeling of evolving thrust wedges with different preexisting topographic relief: Implications for the Longmen Shan thrust belt, eastern Tibet

2016 ◽  
Vol 121 (6) ◽  
pp. 4591-4614 ◽  
Author(s):  
Chuang Sun ◽  
Dong Jia ◽  
Hongwei Yin ◽  
Zhuxin Chen ◽  
Zhigang Li ◽  
...  
Keyword(s):  
Thrust Belt ◽  
Eastern Tibet ◽  
Sandbox Modeling ◽  
Longmen Shan Thrust Belt ◽  
Topographic Relief

scholarly journals Reply to comment by Tan et al. on “Sandbox modeling of evolving thrust wedges with different preexisting topographic relief: Implications for the Longmen Shan thrust belt, eastern Tibet”

2017 ◽  
Vol 122 (2) ◽  
pp. 1552-1554
Author(s):  
Chuang Sun ◽  
Dong Jia ◽  
Hongwei Yin ◽  
Zhuxin Chen ◽  
Zhigang Li ◽  
...  
Keyword(s):  
Thrust Belt ◽  
Eastern Tibet ◽  
Sandbox Modeling ◽  
Longmen Shan Thrust Belt ◽  
Topographic Relief

Geochemical features of the pseudotachylytes in the Longmen Shan thrust belt, eastern Tibet

2019 ◽  
Vol 514 ◽  
pp. 173-185 ◽  
Author(s):  
Huan Wang ◽  
Haibing Li ◽  
Jialiang Si ◽  
Lei Zhang ◽  
Zhiming Sun
Keyword(s):  
Thrust Belt ◽  
Eastern Tibet ◽  
Longmen Shan Thrust Belt

scholarly journals Structural and Geochronological Constraints on the Early Mesozoic North Longmen Shan Thrust Belt: Foreland Fold-Thrust Propagation of the SW Qinling Orogenic Belt, Northeastern Tibetan Plateau

Tectonics ◽  
2018 ◽  
Vol 37 (12) ◽  
pp. 4595-4624 ◽  
Author(s):  
Dan-Ping Yan ◽  
Liang Qiu ◽  
Michael L. Wells ◽  
Mei-Fu Zhou ◽  
Xiangkun Meng ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Orogenic Belt ◽  
Thrust Belt ◽  
Qinling Orogenic Belt ◽  
Northeastern Tibetan Plateau ◽  
Early Mesozoic ◽  
Geochronological Constraints ◽  
Longmen Shan Thrust Belt

Paleoseismic events on the Shuangshi-Dachuan fault of the seismic gap, Longmen Shan thrust belt, eastern margin of the Tibetan Plateau

2019 ◽  
Vol 169 ◽  
pp. 1-10 ◽  
Author(s):  
Chongjian Shao ◽  
Shao Liu ◽  
Yong Li ◽  
Rongjun Zhou ◽  
Shiyuan Wang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Seismic Gap ◽  
The Tibetan Plateau ◽  
Thrust Belt ◽  
Eastern Margin ◽  
Longmen Shan Thrust Belt

scholarly journals Numerical Simulation Study on the Influence of Branching Structure of Longmen Shan Thrust Belt on the Nucleation of Mw7.9 Wenchuan Earthquake

2020 ◽  
Vol 12 (24) ◽  
pp. 4031
Author(s):  
Chong Yue ◽  
Chunyan Qu ◽  
Xinjian Shan ◽  
Wei Yan ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Wenchuan Earthquake ◽  
Equivalent Stress ◽  
Tibet Plateau ◽  
Reverse Fault ◽  
Thrust Belt ◽  
Low Velocity ◽  
The Wenchuan Earthquake ◽  
Detachment Layer ◽  
Longmen Shan Thrust Belt ◽  
Stress Accumulation

On the Longmen Shan thrust belt (LMS) on the eastern margin of Tibet Plateau, the Mw7.9 Wenchuan earthquake occurred in 2008. As for the dynamic cause of the Wenchuan earthquake, many scholars have studied the rheological difference and terrain elevation difference on both sides of the fault. However, previous studies have simplified the LMS as a single listric-reverse fault. In fact, the LMS is composed of four faults with different dip angles in the shallow part, and the faults are Wenchuan-Maoxian fault (WMF), Yingxiu-Beichuan fault (YBF), Guanxian-Jiangyou fault (GJF) and Range Front Thrust (RFT) from west to east. However, the control of the branching structure of these faults on the distribution and accumulation of stress and strain during the seismogenic of the Wenchuan earthquake has not been discussed. In this paper, four viscoelastic finite element models with different fault numbers and combination structures are built to analyze the effect of fault branching structures on the stress distribution and accumulation during the seismogenic of Wenchuan earthquake, and we use geodetic data such as GPS and precise leveling data to constrain our models. At the same time, we also study the influence of the existence of the detachment layer, which is formed by the low-resistivity and low-velocity layer, between the upper and lower crust of the Bayan Har block and the change of its frontal edge position on the stress accumulation and distribution. The results show that the combinations of YBF and GJF is most conducive to the concentration of equivalent stress below the intersection of the two faults, and the accumulated stress on GJF is shallower than that on YBF, which means that more stress is transferred to the surface along GJF; and the existence of a detachment layer can effectively promote the accumulation of stress at the bottom of YBF and GJF, and the closer the frontal edge position of the detachment layer is to the LMS fault, the more favorable the stress accumulation is. Based on the magnitude of stress accumulation at the bottom of the intersection of YBF and GJF, we speculate that the frontal edge position of the detachment layer may cross YBF and expand eastward.

scholarly journals Initiation of Clockwise Rotation and Eastward Transport of Southeastern Tibet Inferred from Deflected Fault Traces and GPS Observations

2021 ◽  
Author(s):  
Weijun Gan ◽  
Peter Molnar ◽  
Peizhen Zhang ◽  
Genru Xiao ◽  
Shiming Liang ◽  
...  
Keyword(s):  
The Tibetan Plateau ◽  
Clockwise Rotation ◽  
Active Deformation ◽  
Crustal Thinning ◽  
Eastern Tibet ◽  
Southeastern Margin ◽  
Wide Scale ◽  
Red River Fault ◽  
Longmen Shan Thrust Belt ◽  
Gps Observations

Eastward transport and clockwise rotation of crust around the southeastern margin of the Tibetan Plateau dominates active deformation east of the Eastern Himalayan Syntaxis. Current crustal movement inferred from GPS measurements indicates ongoing distortion of the traces of the active Red River fault and the Mesozoic Yalong-Yulong-Longmen Shan thrust belt. By extrapolating current rates back in time, we infer that this pattern of deformation developed since 10.1 ± 1.5 Ma. This date of initiation is approximately synchronous with a suite of tectonic phenomena, both near and far, within the wide Eurasia/Indian collision zone, including the initiation of slip on the Ganzi-Yushu-Xianshuihe fault and crustal thinning and E-W extension by normal faulting on N-S−trending rifts in the plateau interior. Accordingly, the eastward movement of eastern Tibet and the clockwise rotation of that material seem to be local manifestations of a larger geodynamic event at ca. 10−15 Ma that changed the kinematic style and reorganized deformation not only on the plateau-wide scale, but across the entire region affected by the India/Eurasia collision. Convective removal of some or all of Tibet’s mantle lithosphere seems to offer the simplest mechanism for these approximately simultaneous changes.

Background Stress State Before the 2008 Wenchuan Earthquake and the Dynamics of the Longmen Shan Thrust Belt

2018 ◽  
Vol 175 (7) ◽  
pp. 2503-2512 ◽  
Author(s):  
Kaiying Wang ◽  
Yu. L. Rebetsky ◽  
Xiangdong Feng ◽  
Shengli Ma
Keyword(s):  
Stress State ◽  
Wenchuan Earthquake ◽  
Thrust Belt ◽  
2008 Wenchuan Earthquake ◽  
The 2008 Wenchuan Earthquake ◽  
Longmen Shan Thrust Belt
Sign in / Sign up

Export Citation Format

Share Document