Characteristics and implications of the stress state in the Longmen Shan fault zone, eastern margin of the Tibetan Plateau

2015 ◽  
Vol 656 ◽  
pp. 1-19 ◽  
Author(s):  
Wen Meng ◽  
Qunce Chen ◽  
Zhen Zhao ◽  
Manlu Wu ◽  
Xianghui Qin ◽  
...  
Keyword(s):  
Stress State ◽  
Tibetan Plateau ◽  
Fault Zone ◽  
The Tibetan Plateau ◽  
Eastern Margin ◽  
Longmen Shan Fault

scholarly journals ESR geochronology of the Minjiang River terraces at Wenchuan, eastern margin of Tibetan Plateau, China

2013 ◽  
Vol 40 (4) ◽  
pp. 360-367 ◽  
Author(s):  
Chun-Ru Liu ◽  
Gong-Ming Yin ◽  
Hui-Ping Zhang ◽  
Wen-Jun Zheng ◽  
Pierre Voinchet ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tectonic Activity ◽  
The Tibetan Plateau ◽  
Fluvial Sediments ◽  
River Terrace ◽  
Eastern Margin ◽  
River Terraces ◽  
Quaternary Climate ◽  
Minjiang River ◽  
Longmen Shan Fault

Abstract The Minjiang River terrace along the Longmen Shan fault zone near Wenchuan, at the eastern margin of the Tibetan Plateau, China, provides archives for tectonic activity and quaternary climate change. However, previous studies were not able to provide ages older than 100 ka due to the limitations of dating material or/and methods applied to date the fluvial sediments. In this study, we used the ESR signal of the Ti-Li center in quartz to obtain the ages of four higher terraces (T3–T6). According to the results, the terraces T3 to T6 were formed at 64±19 ka, 101±15 ka, 153±33 ka, and 423±115 ka, respectively. Combined with previous studies, these results indicate that the formations of all terraces correspond to glacial/interglacial transition periods, such as, T1-T5 being correlated to MIS2/1, MIS4/3, MIS5d/5c, and MIS6/5e respectively, while T6 probably to MIS12/11. According to these data, it is found that the average incision rate was significantly higher over the last 150 ka than that previous 100 ka (250 to 150 ka). As both tectonics and climate have affected the formation of these terraces, in addition to the overall uplifting of Tibetan Plateau, the regional uplift due to isostasy would be an additional tectonic factor in the formation of river terraces in the eastern margin of Tibetan plateau.

Evidence for normal and deep-buried features of the Longquan Shan fault zone at the eastern margin of the Tibetan plateau

2019 ◽  
Vol 179 ◽  
pp. 56-64 ◽  
Author(s):  
Guangyu Fu ◽  
Xiaoning Su ◽  
Yawen She ◽  
Tai Liu ◽  
Jun Li ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Fault Zone ◽  
The Tibetan Plateau ◽  
Eastern Margin
Sign in / Sign up

Export Citation Format

Share Document