Kinematics of Late Quaternary Slip Along the Qishan‐Mazhao Fault: Implications for Tectonic Deformation on the Southwestern Ordos, China

Li, Xinnan; Zhang, Peizhen; Zheng, Wenjun; Feng, Xia‐Ting; Li, Chuanyou; Pierce, Ian; Xu, Hongyan; Ai, Ming; Chen, Gan; Dong, Jinyuan; Liu, Jinrui; Ren, Guangxue

doi:10.1029/2018tc005043

Cited by 34 publications

(30 citation statements)

References 30 publications

(50 reference statements)

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“…Thermochronological data from the northeastern Tibetan Plateau and the evidence from the foreland basin are consistent with the northward propagation of thrusts Figure 1. Information on the growth and rotation of the northeastern Tibetan Plateau (orange arrows) is from Tapponnier et al [2], Dupont-Nivet et al [19], Yu et al [72], Li et al [73], and Zhang et al [74]. Data are derived from the following: (1) Fang et al [16]; (2) Wang et al [12]; (3) Lease et al [41]; (4) Fang et al [11]; (5) Wang et al [75]; (6) Clark et al [14]; (7) Duvall et al [15]; (8) Liu et al [60]; (9) Mock et al [63]; (10) Roger et al [62]; (11) Wang et al (2012); (12) Tian et al [46]; (13) Yang et al [25]; (14) Duvall et al [76]; (15) Yu et al [77]; (16) Lease et al [56]; (17) Zheng et al [65]; (18) Wang et al (2012); (19) Liu et al [24]; (20) Yu et al [69]; (21) Zhang and Xue [36]; (22) Tian et al [52]; (23) Tian et al [78]; and (24) Clark et al [13].…”

Section: Implications For Deformation Of the Ne Tibetan Plateaumentioning

confidence: 99%

Rapid Eocene Exhumation of the West Qinling Belt: Implications for the Growth of the Northeastern Tibetan Plateau

et al. 2020

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Cenozoic exhumation in the northeastern Tibetan Plateau provides insights into spatial-temporal patterns of crustal shortening, erosion, landscape evolution, and geodynamic drivers in the broad India-Eurasia collision system. The NW-SE trending West Qinling Belt has been a central debate as to when crustal shortening took place. Within the West Qinling Belt, a thick succession of Cretaceous sedimentary rocks has been deformed and exhumed along major basin-bounding thrust faults. We present new apatite (U-Th)/He ages from the hanging wall and footwall of this major thrust. Contrasting thermal histories show that rapid cooling commenced as early as ca. 45 Ma and continued for 15–20 Myr for the hanging wall, whereas the footwall experiences continuous cooling and slow exhumation since the late Mesozoic. We infer that accelerated exhumation was driven by thrusting in response to the northward growth of the Tibetan Plateau during the Eocene (ca. 45–35 Ma) based on regional sedimentological, structural, and thermochronological data.

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Section: Implications For Deformation Of the Ne Tibetan Plateaumentioning

confidence: 99%

Rapid Eocene Exhumation of the West Qinling Belt: Implications for the Growth of the Northeastern Tibetan Plateau

et al. 2020

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“…Using geological data and earthquake focal mechanism solutions, Li. et al [17] concluded that the late Quaternary activity of the QSMZF is left-lateral with normal component, with a strike-slip rate of about 0.5-1.0 mm/yr. In the LXB, the negative dilatation was the first-order feature, while a positive dilatation belt with a north-northeast direction was mapped in the central part of LXB.…”

Section: Gps-derived Strain Ratesmentioning

confidence: 99%

Crustal Deformation on the Northeastern Margin of the Tibetan Plateau from Continuous GPS Observations

Yao

et al. 2018

Remote Sensing

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We installed 10 continuous Global Positioning System (GPS) stations on the northeast margin of the Tibetan Plateau at the end of 2012, in order to qualitatively investigate strain accumulation across the Liupanshan Fault (LPSF). We integrated our newly built stations with 48 other existing GPS stations to provide new insights into three-dimensional tectonic deformation. We employed white plus flicker noise model as a statistical model to obtain realistic velocities and corresponding uncertainties in the ITRF2014 and Ordos-fixed reference frame. The total velocity decrease from northwest to southeast in the Longxi Block (LXB) was 5.3 mm/yr within the range of 200 km west of the LPSF on the horizontal component. The first-order characteristic of the vertical crustal deformation was uplift for the northeastern margin of the Tibetan Plateau. The uplift rates in the LXB and the Ordos Block (ORB) were 1.0 and 2.0 mm/yr, respectively. We adopted an improved spherical wavelet algorithm to invert for multiscale strain rates and rotation rates. Multiscale strain rates showed a complex crustal deformation pattern. A significant clockwise rotation of about 30 nradians/yr (10−9 radians/year) was identified around the Dingxi. Localized strain accumulation was determined around the intersectional region between the Haiyuan Fault (HYF) and the LPSF. The deformation pattern across the LFPS was similar to that of the Longmengshan Fault (LMSF) before the 2008 Wenchuan MS 8.0 earthquake. Furthermore, according to the distributed second invariant of strain rates at different spatial scale, strain partitioning has already spatially localized along the Xiaokou–Liupanshan–Longxian–Baoji fault belt (XLLBF). The tectonic deformation and localized strain buildup together with seismicity imply a high probability for a potential earthquake in this zone.

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“…The Qian River drainage of which the tectonic framework is controlled by the Longxian-Baoji active fault zone (F5 in Figure 1a) is located in the neo-tectonic movement active area (Li et al, 2018b;Shi, 2011;Zheng et al, 2016). It also located in the middle-north segment of the famous south-north earthquake belt, and some moderate-large earthquakes are known to have occurred, such as the Qishan 7.0 magnitude earthquake in 780a BC and the Longxian 6.0 magnitude earthquake in 1704 a (Shi, 2011;Wang, 2011a;Zheng et al, 2016).…”

Section: Geological Andgeographical Settingmentioning

confidence: 99%

Debris flow events of 4000 a BP and its resulting archaeological site destruction in Qian River gorge, the upper reach of Wei River, central China

et al. 2020

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In the study of global change, the relationship between the Holocene climatic disaster events and the rise and fall of ancient civilization is of considerable significance to a profound understanding of civilization evolution and human-land harmony. During the geological survey in the western Wei River Basin, a debris-flow event that would have destroyed an archaeological site was uncovered in the Holocene loesson the south bank of the Qian River. They were studied by field observations and laboratory analysis, including magnetic susceptibility, particle size distribution, carbonate content determination, and AMS 14 C dating. The debris-flow event was dated at about 3702 BP to 4084 cal BP by using the AMS 14 C in combination with archaeological artefacts age determination. Mingling with cultural layer, whole pig bones, and covering ash pit and cellars, the debris flow incident was linked to the site destruction. Combined with the global climate background at about 4000 a BP, the palaeo-floods records in the Wei River Basin, and the regional palaeo-earthquakes, we infer that the debris-flow was triggered by large earthquake and heavy rainfall and was a regional hydrological response to the 4.0 ka global climate event. Moreover, the debris-flow incident and its resulting archaeological site ruin have essential scientific significance for exploring the climate environment evolution, the ancient civilization evolvement, and the human-land relationship development in the Wei River Basin and surrounding area.

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Kinematics of Late Quaternary Slip Along the Qishan‐Mazhao Fault: Implications for Tectonic Deformation on the Southwestern Ordos, China

Cited by 34 publications

References 30 publications

Rapid Eocene Exhumation of the West Qinling Belt: Implications for the Growth of the Northeastern Tibetan Plateau

Rapid Eocene Exhumation of the West Qinling Belt: Implications for the Growth of the Northeastern Tibetan Plateau

Crustal Deformation on the Northeastern Margin of the Tibetan Plateau from Continuous GPS Observations

Debris flow events of 4000 a BP and its resulting archaeological site destruction in Qian River gorge, the upper reach of Wei River, central China

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