Late Quaternary sinistral strike-slipping of the Liupanshan-Baoji fault zone: Implications for the growth of the northeastern Tibetan Plateau

Wang, Shidi; Shi, Yaqin; Feng, X.; Tian, Zhen

doi:10.1016/j.geomorph.2021.107628

Cited by 13 publications

(7 citation statements)

References 45 publications

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“…The late phase of deformation (Late Pleistocene to now) is still thrusting but with a left‐slip component, producing a 1–2 km shortening. In addition, an amount of literature has quantified well the slip rate of this phase and indicates that the LPSF is characterized by thrusting and left‐lateral faulting, with geological, geomorphological, and GPS methods (Burchfiel et al, 1992; Deng et al, 1989; Li et al, 2013; Li, Feng, et al, 2019; Liu et al, 2016; Shi et al, 2011; Wang et al, 2021; Xiang et al, 1998; Zhang et al, 2011; Zheng et al, 2013). However, the average long‐term (i.e., Late Miocene) slip rate remains unclear due to the lack of reliable quantitative measures.…”

Section: Tectonic Setting Of the Liupan Shan Areamentioning

confidence: 99%

“…In recent years, pervasive literature exists on the movement of the LPSF. They inferred that the sinistral‐strike and thrust slip rates on the northern part of the LPSF are around 1–3 and 0.9 mm/year from the Late Pleistocene to Holocene (e.g., Burchfiel et al, 1992; Deng et al, 1989; Liu et al, 2016; Shi et al, 2011; Xiang et al, 1998) and the average strike‐slip rate on the southern part is 0.7–2.0 mm/year (Li, Feng, et al, 2019; Wang et al, 2021). Similarly, the present‐day slip rate of the LPSF based on GPS data is suggested to be less than 1.7 mm/year (Li et al, 2013; Zhang et al, 2011) or about 3 mm/year (Zheng et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Quantifying the long‐term slip rate of Liupan Shan thrust fault through the low‐temperature thermochronology

Liu

Cai

2022

Geological Journal

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Liupan Shan thrust fault (LPSF), one of the outmost boundaries of the NE Tibetan Plateau, is crucial for understanding the dynamics of the outward and upward growth of the plateau. However, little is known about the long‐term (~10‐Myr timescale) fault‐slip history along the LPSF. Here we estimate the kinematic process of the LPSF using the 2‐D thermal history and 3‐D thermo‐kinematic modellings which are constrained by previously published apatite fission‐track thermochronological data. Inverse modellings confirm previous findings that the Cenozoic uplift in Liupan Shan initiated in the Late Miocene, which was controlled by thrusting of the LPSF. In addition, we also constrain the geometry of the thrust as being steep (54°) at the surface, consistent with field observations and seismic reflection data. Thrusting motion on the fault shows an average long‐term slip rate of ~0.54 km/Myr, yielding a total of ~4.7 km exhumation and ~3.4 km crustal shortening. Together with previous results show that the Late Miocene deformation is not only by local but also regional events driven by the India‐Asia collision.

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Section: Tectonic Setting Of the Liupan Shan Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quantifying the long‐term slip rate of Liupan Shan thrust fault through the low‐temperature thermochronology

Liu

Cai

2022

Geological Journal

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“…The slip rates of active faults in the NETP have been extensively studied using geologic (Chen et al, 2019;Li et al, 2009;Matrau et al, 2019;Wang et al, 2021) and geodetic (Hao et al, 2021;Li et al, 2019;Li, Pierce, et al, 2021; approaches. However, both approaches have limitations.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Present-day Kinematics at the Northeastern Margin of the Tibetan Plateau

Yang³

et al. 2022

Preprint

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Abstract. The slip rates of active faults at the northeastern margin of the Tibetan Plateau (NETP) must be clarified to understand the lateral expansion of the Tibetan Plateau and assess the seismic hazards in this region. To obtain the continuous slip rates of active faults at the NETP, we constructed a three-dimensional geomechanics-numerical model of the NETP. The model explains the fault systems, topographic undulations, and crustal stratigraphy of the study area. It also accounts for the physical rock properties, gravity fields, fault friction coefficients, initial crustal stresses, and boundary conditions. The horizontal and vertical crustal velocities and slip rates of active faults in the study area were obtained from simulations using the aforementioned model. The results were then validated against independent geographic datasets. Based on the analysis of the fault kinematics in the study area, the Laohushan, middle–southern Liupanshan, and Guguan–Baoji faults, as well as the locked fault zone at the junction of the Maxianshan and Zhuanglanghe faults, represent potential hazard areas for strong earthquakes. However, as these faults are currently in the stress accumulation stage, they are unlikely to cause a major earthquake in the short term. In contrast, it is likely that the Jinqiangshan–Maomaoshan fault will generate a ~MS7.0 earthquake in the coming decades. Based on the analysis of several profiles across the NETP, the deformations at the NETP are continuous in the Bayan Har and Qaidam blocks, as well as in the block-like in Qilian Block, particularly around the Haiyuan Fault.

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“…Although there has been extensive research on fault slip rates in the NETP using geologic (Chen et al, 2019;C. Li et al, 2009;Matrau et al, 2019;Wang et al, 2021; or geodetic (Hao et al, 2021;X. Li et al, , 2021a approaches, a systematic mismatch is typically found between the slip rates calculated from geological records and those obtained from geodetic inversion, owing to the limited assumptions behind these two methods.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of contemporary kinematics at the northeastern Tibetan Plateau and its implications for seismic hazard assessment

Yang³

et al. 2022

Solid Earth

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Abstract. The slip rates of active faults in the northeastern Tibetan Plateau (NETP) require clarification to understand the lateral expansion of the Tibetan Plateau and assess the seismic hazards in this region. To obtain the continuous slip rates of active faults at the NETP, we constructed a three-dimensional (3D) numerical geomechanics model that includes a complex 3D fault system. The model also accounts for the physical rock properties, gravity fields, fault friction coefficients, initial stress, and boundary conditions. Following this, we present the long-term kinematics of NETP based on the horizontal and vertical velocities and fault slip rates acquired from the model. The fault kinematic characteristics indicate that the Laohushan, middle–southern Liupanshan, and Guguan–Baoji faults, as well as the junction area of the Maxianshan and Zhuanglanghe faults, are potential hazard areas for strong earthquakes. However, as these faults are currently in the stress accumulation stage, they are unlikely to cause a strong earthquake in the short term. In contrast, it is likely that the Jinqiangshan–Maomaoshan fault will generate a earthquake with a surface-wave magnitude (MS) of 7.1–7.3 in the coming decades. In addition, the velocity profiles across the NETP imply that the plate rotation is the primary deformation mechanism of the NETP even though the intra-block straining and faulting are non-negligible.

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Late Quaternary sinistral strike-slipping of the Liupanshan-Baoji fault zone: Implications for the growth of the northeastern Tibetan Plateau

Cited by 13 publications

References 45 publications

Quantifying the long‐term slip rate of Liupan Shan thrust fault through the low‐temperature thermochronology

Quantifying the long‐term slip rate of Liupan Shan thrust fault through the low‐temperature thermochronology

Numerical Simulation of Present-day Kinematics at the Northeastern Margin of the Tibetan Plateau

Numerical simulation of contemporary kinematics at the northeastern Tibetan Plateau and its implications for seismic hazard assessment

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