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Basic characteristics and regionalization of recent tectonic stress field in China
Published in Katsuhiko Sugawara, Yuzo Obara, Akira Sato, Rock Stress, 2020
Furen Xie, Xiaofeng Cui, Jingfa Zhang, Suqin Dou, Jiantao Zhao
The pattern of recent tectonic stress field in China is obviously controlled by dynamic action of peripheral plates. Obviously, the collision of India plate is the primary agent that helps establishing the basic pattern of recent tectonic stress field in China. India plate collides with Eurasia continent towards north at the speed of 50 mm every year, and the southern part of Tibet Plateau is the first to be greatly pressed, and it uplifts quickly, so that lateral stretching forms in its upper part. Then the northeast region and the edge belt of Tibet Plateau are pressed by Tibet Plateau in the south and blocked by Tarim-Tianshan and Alasan blocks in the north, and its crustal material moves to the east or southeast, so the tectonic environment mainly affected by shear stress action is formed and a batch of giant strike-slip fault zones renowned at home and abroad are also formed, such asArdenian fault zone, East Kunlun fault zone, Xianshuihefault zone, etc.The collision of India plate also affects the eastern region of China, which is represented by the fact that, with the united action of pressing of Qingzang block and subduction of Pacific plate, the tectonic environment with tensile-shear stress action as the main characteristic is formed in north China.The northeast region of China is mainly affected by the subduction of Pacific plate, and weak press-shear stress is the dominant action. South China plate, which is affected by the pressing function of Philippines plate, shows the tectonic environment of moderately strong press-shear stress.
Process-based approach on tidal inlet evolution – Part 1
Published in C. Marjolein Dohmen-Janssen, Suzanne J.M.H. Hulscher, River, Coastal and Estuarine Morphodynamics: RCEM 2007, 2019
D.M.P.K. Dissanayake, J.A. Roelvink
Van Der Woerd, J. et al. 2002. Uniform post-glacial slip-rate along the central 600km of the kunlun fault (tibet), from 26al,10 be and 14c dating of risers offsets, and climatic origin of the regional morphology, Geophys. J. Int., 148, 356-388,2002
Controlling factors of hydrocarbon accumulation and differential distribution in the western Qaidam Basin, Tibet Plateau
Published in Australian Journal of Earth Sciences, 2022
H. Wu, Z. Zhang, S. Liu, Z. Wang, Q. Zhuo, X. Lu, H. Liu
The Tibet Plateau, which formed by collision of the Asia-Europe plate with the Indian plate, continued to uplift and push northward with crustal slipping north or east, forming large-scale strike-slip and thrust faults and resulting in the uplift of ranges and deflection and settlement of basins (Harrison et al., 1992). The periphery of the Qaidam Basin is affected by three main strike-slip and thrust structural deformation systems: the Altyn Tage left-lateral strike-slip fault, the East Kunlun strike-slip and thrust-fault system, and the Qilian thrust-fault system (Cheng, Zhang, et al., 2018; Fu et al., 2015; Zhao et al., 2012). The Altyn Tage fault and the East Kunlun fault system jointly controlled the development and evolution of the western Qaidam Basin petroleum system. Under the control of the strike-slip and thrust orogenic system, the western Qaidam Basin developed structural traps and some lithological structural composite traps, such as the Zhahaquan, Liangdong and Fengxi reservoirs.
Mapping earthquake-triggered landslide susceptibility by use of artificial neural network (ANN) models: an example of the 2013 Minxian (China) Mw 5.9 event
Published in Geomatics, Natural Hazards and Risk, 2019
Yingying Tian, Chong Xu, Haoyuan Hong, Qing Zhou, Duo Wang
Due to the effect of the India-Eurasia plate collision, the northeastern margin of the Tibetan Plateau hosts very active tectonics (Figure 1(a)). A great deal of large-scale active faults developed there. Among them, the West Qinling fault (F1) and East Kunlun fault (F3) are the two large-scale strike-slip structures. Their relative movements generate a rock bridge area in which there are a series of thrust faults with left slip components (Figure 1(b)). The Lintan–Dangchang fault (F2) is one of these thrust faults, which has several branches. On 22 July 2013, one branch (F2-2 in Figure 1(c)) of the Lintan–Dangchang fault was ruptured by the Minxian Mw 5.9 earthquake (He et al. 2013) with the epicenter nearby the bending of the Tao River and the focal depth about 20 km.
Seismic potential in the southeastern margin of Bayanhar block after 2017 Jiuzhaigou earthquake, China – insight from stress evolution and earthquake probability estimation
Published in Geomatics, Natural Hazards and Risk, 2023
Li Liao, Pingen Li, Jiansi Yang, Jianzhou Feng
The southeastern margin of the Bayanhar block (BHB) is located at the junction of the Bayanhar block and the southern China block (SCB). It is not only the leading edge of the uplift and development of the Qinghai-Tibetan Plateau, but also in the middle of the north-south seismic belt in China. The tectonic movement on the boundary faults of BHB is extremely complex. The East Kunlun Fault (EKLF) on the northern boundary of BHB is about 1800 km long, and the average sinistral strike-slip rate since the late Pleistocene is 10–12.5 mm/a (Van Der Woerd et al. 2002), but the slip rate is shortened to 1 mm/a (Kirby et al. 2007) at the junction with the eastern boundary of BHB. The same situation also occurred on the Xianshuihe fault (XSHF) zone at the southern boundary of BHB. The horizontal slip rates of different sections of the Longmenshan fault (LMSF) on the eastern boundary are also very different. As for the middle section of LMSF, the average horizontal shortening slip rate is about 3.5 mm/a and the dextral strike-slip rate is about 6 mm/a, while the average horizontal shortening slip rate in the north section is 5-6 mm/a and the dextral strike slip s rate is 2-3 mm/a (Zhang et al. 2009; Du et al. 2009), which reflects that the active tectonic movement mode of the eastern boundary zone is mainly horizontal compression. The above tectonic movement characteristics show that the east-southward movement of BHB is blocked by the SCB, which makes the block movement change from horizontal strike-slip to thrust with strike-slip. The intensive tectonic movement causes strong interaction between different faults at the boundary of BHB, which controls the occurrence of a series of historical strong earthquakes.