Spatiotemporal patterns of the Late Quaternary deformation across the northern Chinese Tian Shan foreland

Lü, Honghua; Li, Bingjing; Wu, Dengyun; Jing-bo, Zhao; Zheng, Xiaodong; Xiong, Jianguo; Li, Youli

doi:10.1016/j.earscirev.2019.04.026

Cited by 49 publications

(45 citation statements)

References 57 publications

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“…3.5 mm/year of convergence is accommodated by the southern Junggar FTB (Figure 3a), which is consistent with the geodetic rate of 4.0 ± 1.4 mm/year previously estimated by Yang et al (2008). This value is also comparable with the geologic rate of 2-4 mm/year by summing the Holocene shortening rates of individual anticlines (Lu et al, 2019 and references therein), as well as the average Quaternary shortening rate of 3.9 ± 0.4 mm/year based on balanced-section restorations of petroleum seismic reflection profiles (Qiu et al, 2019).…”

Section: Comparisons Between the Geodetic And Geologic Ratessupporting

confidence: 90%

The characteristics of active deformation and strain distribution in the eastern Tian Shan

Rao

Qiu

et al. 2020

Geological Journal

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The Tian Shan is one of the largest and most active intracontinental mountain belts, and its active deformation has attracted much scientific attention. In this study, we investigated the characteristics of active deformation in the most complex, eastern Tian Shan through the analysis of focal mechanism solutions since 1976, velocity vectors of 25 years geodetic measurements, and existing studies on active tectonics. The results demonstrate that: (a)~3.5 mm/year of convergence is accommodated by the southern Junggar fold-and-thrust belt, forming a series of active thrusts and folds. The Bolokelu-Aqikekuduke Fault is a transpressional structure, accommodating~1 mm/year shortening and~1.5 mm/year of right-lateral shear strain; (b) Most of the convergence in the Huola Shan region is absorbed by the North Luntai Fault, and the right-lateral shear strain is probably accommodated by the Kaidu River Fault and the Songshudaban Fault; (c) Active deformation in the eastern Tian Shan under oblique convergence is mainly partitioned into widespread compressional deformation (folding and thrusting) and dextral displacements on the NW-trending faults. Nevertheless, left-lateral strike-slip motions have also been observed, suggesting that further constraints on the kinematics and deformation rates of structures especially the intermontane structures are still needed with the aim of achieving a better understanding of strain distribution in the study area.

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Section: Comparisons Between the Geodetic And Geologic Ratessupporting

confidence: 90%

The characteristics of active deformation and strain distribution in the eastern Tian Shan

Rao

Qiu

et al. 2020

Geological Journal

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“…The Chinese Tian Shan is one of the most active orogenic ranges in Central Asia (Lu et al., 2019). Adjacent foreland basins collected and preserved continuous Late Cenozoic deposits, including the uppermost Xiyu conglomerate (Charreau et al., 2009; Sun et al., 2004).…”

Section: Introductionmentioning

confidence: 99%

Signatures of tectonic‐climatic interaction during the Late Cenozoic orogenesis along the northern Chinese Tian Shan

Zhao

Zhang

et al. 2020

Basin Research

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The Chinese Tian Shan is one of the most actively growing orogenic ranges in Central Asia. The Late Miocene‐Quaternary landscape evolution of northern Tian Shan has been significantly driven by the interaction between tectonic deformations and climate change, further modulated by the erosion of the upstream bedrocks and deposition into the downstream basins. In this study, only the accessible Kuitun River drainage basin in northern Tian Shan was considered, and detrital zircon geochronology and heavy minerals were analyzed to investigate the signature of the driving forces for Miocene sedimentation in northern Tian Shan. This study first confirmed a previously recognized tectonic uplift at ca. 7.0 Ma and further revealed that the basin sediments were mainly derived from the present glacier‐covered ridge‐crest regions during 3.3–2.5 Ma. It is suggested Late‐Pliocene to Early Pleistocene sedimentation was likely a response to the onset of the northern hemispheric glaciation. Although complicated, this study highlights that the tectonic‐climatic interaction during the Late Cenozoic orogenesis can be discriminated in the northern Chinese Tian Shan.

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“…Pink (Charreau et al, 2017;Huang et al, 2015;A. Li et al, 2012;H. Lu et al, 2019;Wu et al, 2016) and blue (this study) ellipses indicate the shortening rate.…”

Section: Tectonicsmentioning

confidence: 51%

“…Fault activity rates inferred from surface rupture from a single earthquake, however, may not adequate to represent the long-term average slip rate (Bull et al, 2006;Mouslopoulou et al, 2012). Therefore, given that no evidence was reported to support a late Holocene increase in the tectonic uplift rate in the northern Tian Shan (H. Lu et al, 2019), we prefer the observed increase in Holocene slip rate to be apparent. Lu et al (2019) reviewed the Late Quaternary deformation across the Chinese Tian Shan, and estimated 2-4 and 4-5 mm/yr shortening rates for the forelands in the northern and southern Tian Shan, respectively.…”

Section: /2019tc006029mentioning

confidence: 96%

“…Therefore, given that no evidence was reported to support a late Holocene increase in the tectonic uplift rate in the northern Tian Shan (H. Lu et al, 2019), we prefer the observed increase in Holocene slip rate to be apparent. Lu et al (2019) reviewed the Late Quaternary deformation across the Chinese Tian Shan, and estimated 2-4 and 4-5 mm/yr shortening rates for the forelands in the northern and southern Tian Shan, respectively. Table 1. 10.1029/2019TC006029…”

Section: /2019tc006029mentioning

confidence: 96%

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Active Thrusting in an Intermontane Basin: The Kumysh Fault, Eastern Tian Shan

et al. 2020

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Faulting and folding on the margins of intermontane basins play important roles in accommodating the Cenozoic deformation of the Tian Shan, an intracontinental orogen in central Asia. In the eastern Tian Shan, the southern margin of the elongated Kumysh Basin is bounded by a NE dipping thrust fault, the Kumysh Fault. We report the first investigation of the slip rate of this fault, which is constrained at two sites by profiling the faulted topography and dating the abandoned alluvial fan surfaces. We obtained the topographic data using the satellite stereo imagery and dated geomorphic units using cosmogenic nuclide (10Be) exposure ages and optically stimulated luminescence methods. The results from Monte Carlo simulations of the data suggest an average dip‐slip rate of ~0.35 mm/yr on the Kumysh Fault since 50–60 ka. The “best fit” models indicate an increase after ~5 ka, which may be apparent or caused by the most recent earthquakes. Structural analysis of the displaced strata on a trench wall suggest at least 2.8 m dip offset caused by the late Holocene earthquakes, which is similar to the heights of fault scarps (1.8–2.9 m) on the second youngest alluvial fans (5.6–5.2 ka). Using the dip angle of ~25–40°, we estimate ~0.31 mm/yr shortening rate across the Kumysh Fault during the late Quaternary. By comparing our results with other estimates published in the easternmost Tian Shan, we suggest that deformation within intermontane basins may accommodate up to 50% of the total late Quaternary shortening rate between the Junggar and Tarim blocks, with only the remaining half accommodated by the main, range‐bounding thrusts.

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Spatiotemporal patterns of the Late Quaternary deformation across the northern Chinese Tian Shan foreland

Cited by 49 publications

References 57 publications

The characteristics of active deformation and strain distribution in the eastern Tian Shan

The characteristics of active deformation and strain distribution in the eastern Tian Shan

Signatures of tectonic‐climatic interaction during the Late Cenozoic orogenesis along the northern Chinese Tian Shan

Active Thrusting in an Intermontane Basin: The Kumysh Fault, Eastern Tian Shan

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