Kuan Liang’s research while affiliated with China Earthquake Administration and other places

... The western boundary of the Xigeda-Yuanmou fault has a smaller sinistral strike-slip rate (1-2 mm/a) compared to the eastern boundary Xiaojiang fault zone (>10 mm/a); thus, the CYMB also needs to rotate counterclockwise (Figure 7a) [8]. However, given its slender shape, it is difficult for the CYMB to rotate as a whole, and it is more likely to be split by secondary faults into multiple blocks for self-rotation, a deformation pattern similar to that of the North China Plate [91,92]. The Caimashui fault, located in the middle of the CYMB, is an NE-striking reverse-dextral strike-slip fault with a slip rate of approximately 0.70 ± 0.11 mm/a. ...

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Newly Discovered NE-Striking Dextral Strike-Slip Holocene Active Caimashui Fault in the Central Part of the Sichuan-Yunnan Block and Its Tectonic Significance

... A comprehensive analysis of paleoearthquake markers on both trench walls provided robust and abundant evidence for identifying paleoearthquakes. Additionally, to objectively assess the confidence in each event, we use the scheme of Scharer et al. (2007), D. Y. Yuan et al. (2018), and D. Xu et al. (2023) to rank indicators per event by confidence with a scale of 1-4. ...

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A Transtensional Fault Zone on the Northeastern Margin of the Tibetan Plateau: Millennial Earthquake Recurrence and High Earthquake Hazard

... mm/a (Liang et al., 2019); 3) the vertical slip rates of the Daqingshan Piedmont Fault were 2.5-3.88 mm/a and 1.78-2.83 mm/a since 58 and 11 ka (Xu et al., 2022); 4) the vertical slip rate of Wulashan Piedmont Fault were 2.20-2.28 mm/a and 1.12-1.34 ...

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Late Quaternary activity of Wulashan Northern fault, North China

... Over the last 40 years, scholars have extensively studied the characteristics of the Late Quaternary activity, vigorous earthquake activity, and seismic risk of those northern boundary faults, which provide insights into active structures and recurrence patterns of local strong earthquakes along active faults (Ma et al., 1998;Ma et al., 2000;Deng et al., 1999;Jiang et al., 2001;Ran et al., 2002Ran et al., , 2003bYang et al., 2002;Yang et al., 2003;Nie et al., 2011;Rao et al., 2016;Rao et al., 2019;Liang et al., 2019;He et al., 2020). More recent results showed that the LPF-SPF experienced seven paleoearthquakes during the Holocene, with a recurrence period of 1.37 ± 0.11 ka and an earthquake risk of M > 8.0 (Dong, 2016;Dong, 2016;Liang et al., 2021;Ma and Dong, 2024). The fourteen paleoearthquake events occurred during the Holocene in the DPF, including the 849 A.D. earthquake Yuan et al., 2023). ...

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Late Quaternary activity of Wulashan Northern fault, North China

... The primary NNE-striking right-lateral strike-slip fault zones in North China include the Yinchuan Graben, the SGS, and the Tancheng-Lujiang Fault Zone from west to east (Figure 11; Xu & Ma, 1992;Xu et al., 1993). The past decades have seen more and more geomorphologic and geologic evidence of dextral strike-slip in Yinchuan Graben (e.g., Liang et al., 2019;Middleton, Walker, Rood, et al., 2016) and Tancheng-Lujiang Fault Zon (e.g., Ji et al., 2021;Jiang et al., 2017), however, no further convincing evidence was documented in the SGS. Therefore, our new observations from the NLSF demonstrate the dextral strike-slip in the SGS and provide further constraints for the "bookshelf" deformation model of North China. ...

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Direct Evidence for Dextral Shearing in the Shanxi Graben System: Geologic and Geomorphologic Constraints From the North Liulengshan Fault

... The Tibetan Plateau and its surrounding areas have undergone extensive deformation during the Cenozoic, owing to the collisions between the Indian and Eurasian plates (Tapponnier et al., 1990;Métivier et al., 1998;Meyer et al., 1998;Tapponnier et al., 2001;Yin et al., 2002;Zhang et al., 2004;Fang et al., 2005;Bovet et al., 2009;Yuan et al., 2013;Zheng et al., 2013a;Jiang et al., 2016;Wang et al., 2016;Liang et al., 2018). Similarly, the Qilian Shan Fault and Hexi Corridor (Fig. 1) located at the northeastern margin of the Tibetan Plateau and responsible majorly for the plateau development, have also experienced intense tectonic deformation since the Cenozoic (Hetzel et al., 2002; the deformation in the Tibetan Plateau region (Burchfiel et al., 1989;Tapponnier et al., 1990;Meyer et al., 1998;Cowgill et al., 2003;Zheng et al., 2017;Zhang et al., 2021). ...

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Evidence of structural transformation in the eastern part of the Altyn Tagh Fault, northern margin of the Tibetan Plateau, China, based on the kinematics and shortening rate of the Hongliuxia region

... The Liquan-Pucheng-Heyang Fault is a normal fault with an overall NE-SE trend and a dip angle of 40 • to 60 • , with a total length of 170 km. provides a structural environment for the formation of the ground fissures in the basin, including the Weihe Basin and the surrounding fault basins [25]. ...

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Characteristics and Formation Mechanism of Water-Eroded Ground Fissures in the Weihe Basin of China

... It has been active since the Late Quaternary and controls the Linhe Depression [1]. Previous studies have mainly focused on the fault segments [2][3][4] and palaeo-earthquakes [5][6][7] of the Sertengshan Piedmont Fault through geological methods such as trenching, Quaternary dating, and sedimentary stratigraphy. Based on the characteristics of the geometrical construction, Late Quaternary active tectonics, palaeoseismic activity, and segmentation boundary along the Sertengshan Piedmont Fault, Chen et al. [2] proposed a segmentation model for the Sertengshan Piedmont Fault, in which three segmentation points at Dahoudian, Wubulangkou, and Xiaoshetai cut the Sertengshan Piedmont Fault into four segments (Figure 1b). ...

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Active Tectonics Assessment Using Geomorphic and Drainage Indices in the Sertengshan, Hetao Basin, China

... Usually, they are connected to long-term changes in rock resistance, erosion, or faulting, among other geological processes. Understanding the formation and evolution of knickpoints and knickzones in river systems is crucial because they are features that affect base level variation, tectonic upliftment, lithological differences, volcanic activity, and glacier retreat, among other factors (Lewis 1945;Mueller 1968;Zaprowski et al. 2001;García et al. 2004;Hayakawa and Oguchi 2006;Sun et al. 2016;Kudnar et al. 2022). In contrast to the downstream segment of river, the upstream section exhibits a succession of fractures and knickzones that show active erosion and significant lithological influence on the channel. ...

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Morphometric and longitudinal profile analysis in the Cauvery River basin: a geospatial approach