Lateral structural variations and drainage response along the Misikantage anticline in the western Kuqa fold-and-thrust belt, southern Tianshan, NW China

Tang, Ping; Rao, Gang; Li, Shiqin; Yu, Yangli; Pei, Yangwen; Wang, Xin; Shen, Zhongyan; Chen, Ninghua; Zhao, Bo

doi:10.1016/j.tecto.2017.10.007

Cited by 23 publications

(15 citation statements)

References 61 publications

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“…According to our field observations and subsurface seismic images, the duration of the Kalayuergun dextral strike‐slip fault must be short as it did not extend farther north and the sediments since Pliocene have not been faulted obviously. Additionally, earthquake records in the study area (Tang et al, ) showed that there were few earthquakes on both sides of the Kalayuergun dextral strike‐slip fault during the past several decades. Therefore, we suggest that the activity of the Kalayuergun dextral strike‐slip fault initiated at ~5.3 Ma and has been weakened soon.…”

Section: Discussionmentioning

confidence: 99%

Neogene Paleomagnetic Study of the Western Baicheng Depression: Implications for the Intensified Deformation of Tian Shan Since the Latest Miocene

et al. 2018

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The fold‐and‐thrust belts in the southern forelands of Tian Shan were tectonically deformed as a result of intracontinental deformation in response to the India‐Asia collision; therefore, they are essential for understanding tectonic evolution and basinward propagation of the Tian Shan Range. Although the reactivation of Tian Shan has long been studied, when and how this deformation was initiated and propagated are still controversial. In this study, we present new paleomagnetic results, anisotropy of magnetic susceptibility, tectonic rotations, and interpretations of subsurface seismic images on the Kalayuergun Structural Belt, western Baicheng Depression. Our new results suggest that the deformation of the Kalayuergun Structural Belt initiated at ~5.3 Ma and became young southeasterly, indicating that the deformation reached to the study area in the latest Miocene and propagated basinward progressively since then. The clockwise rotations, about half amounts of which must have been occurred at around ~5.3 Ma, can be linked to the activity of the Kalayuergun dextral strike‐slip fault on the western end of the anticline. Combined with previous results around Tian Shan, we suggest that the long range has been subjected to an episode of intensified tectonic deformation since the latest Miocene, which was caused by the accelerated northward motion of the Tarim Block and Pamir in response to the India‐Asia collision.

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Section: Discussionmentioning

confidence: 99%

Neogene Paleomagnetic Study of the Western Baicheng Depression: Implications for the Intensified Deformation of Tian Shan Since the Latest Miocene

et al. 2018

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“…This is inconsistent with a typical flower structure in which en echelon faults and folds are usually oblique to the primary shear. The en echelon‐like Shizigou and Youshashan anticlines in the southwestern part of the Yingxiong Range are probably related to the development of the local salt layer, which is quite common in the Kuqa fold and thrust belt in the Southern Tian Shan (Tang et al, 2017) and the Zagros thrust system (Ramsey et al, 2008), where salt tectonics prevail under compressional setting.…”

Section: Structural Interpretationsmentioning

confidence: 99%

Structural Coupling Between the Qiman Tagh and the Qaidam Basin, Northern Tibetan Plateau: A Perspective From the Yingxiong Range by Integrating Field Mapping, Seismic Imaging, and Analogue Modeling

Huang

Zhang

et al. 2020

Tectonics

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The Qiman Tagh and the Qaidam Basin within the northern Tibetan Plateau are contrasting in geomorphological, geological, and geophysical features. The Yingxiong Range is the largest anticlinal belt in the SW Qaidam Basin and holds a key in understanding the relationship between the above two tectonic units. Herein, we investigated the geometry, shortening, timing and mechanism of the structural deformation across the Yingxiong Range by integrating field mapping, interpretation of 3-D/2-D seismic reflection data and analogue modeling. The structural interpretation demonstrates that the Yingxiong Range is primarily controlled by NE-directed basement-involved reverse faults. These faults likely sole into a décollement layer at depth of~15 km through the excess area-depth analysis. This pattern is complicated by the development of a local salt layer that decouples the deformation of underlying and overlying strata, as indicated by analogue modeling. Deformation initially occurred at~8.1 Ma but strengthened at~2.5 Ma, with total shortening up to~5 km in the NW part but decreasing to <2 km to the SE. Together with published results, our findings revealed an NE-directed thrust system involving the Qiman Tagh and the SW Qaidam Basin, with the Yingxiong Range as the front of this system. We further inferred that this NE-directed thrust system in the upper crust, together with the previously identified SW-directed deep reverse fault offsetting the Moho, may form a southwestward tapering tectonic wedge, which likely results from the heterogeneity of lithospheric mantle between the Qaidam Basin and the Qiman Tagh-East Kunlun Shan.

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“…The green lines (A‐A′, B‐B′, C‐C′, and D‐D′) represent the four seismic reflection profiles across the depression. The circles in different color are the epicenters of recorded earthquakes acquired from China Earthquake Networks Center (Tang et al, ). The squares in different colors represent locations of previous paleomagnetic studies, and the arrows are the tectonic rotations.…”

Section: Introductionmentioning

confidence: 53%

“…Our study complements several previous analyses, which document the deformation history of the southern Tian Shan foreland since the early Pliocene providing a comprehensive view of the deformation along the range. Although the tectonic uplift of Tian Shan has been constrained as ranging from the Oligocene to Miocene (Bande et al, ; Charreau et al, ; Hendrix et al, ; Huang et al, ; Hubert‐Ferrari et al, ; Sobel et al, ; Windley et al, ; Yin et al, ), it is widely accepted that Tian Shan has been subjected to an episode of widespread deformation since the latest Miocene‐Pliocene (Bande et al, ; Bullen et al, ; Burchfiel et al, ; Sun et al, ; Zhang et al, ), and the deformation might have continued to the present (e.g., Brown et al, ; Hubert‐Ferrari et al, ; Saint‐Carlier et al, ; Scharer et al, ; Tang et al, ; Tian et al, ; Wang et al, ; Yang et al, ). For example, in the eastern Tian Shan, Brown et al () proposed a slip rate of less than ~2 mm/yr on the bounding thrust fault of the southern Tian Shan.…”

Section: Discussionmentioning

confidence: 99%

Late Cenozoic Clockwise Rotations in the Westernmost Part of the Arcuate Qiulitage Fold‐and‐Thrust Belt of Southern Tian Shan Foreland and Its Tectonic Implications

et al. 2019

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Curvature of fold‐and‐thrust belts (FTBs) is a rather common feature in foreland basins. The problem of how curves in FTBs originate is essential for understanding the propagation of deformation and tectonic history of orogens. In this study, we carried out systematic paleomagnetic studies in the westernmost part of the Qiulitage FTB, southern Tian Shan foreland, where thrusting, strike‐slip fault, and tectonic boundary coexist. Our new results suggest that the study area has been subjected to ~20° clockwise rotations after ~5 Ma. Oroclinal test of the paleomagnetic data across the FTB suggests that oroclinal bending caused by the formation of the curved Qiulitage FTB is the dominate reason for these tectonic rotations. The Kalayuergun dextral strike‐slip transfer fault delimiting the western boundary of the Qiulitage FTB is a thin‐skinned structure accommodating the discrepancy in horizontal displacement on both sides of it. These results also suggest that the formation of the curved Qiulitage FTB should not be older than ~5 Ma, indicating that the southern Tian Shan foreland has experienced significant tectonic shortening since the latest Miocene to early Pliocene. Our new results, together with previous studies on deformation history, estimates of crustal shortening, GPS observations and earthquake records, suggest that the southern Tian Shan foreland has been subjected to significant deformation during the past ~5 million years, and the crustal shortening is still ongoing.

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Lateral structural variations and drainage response along the Misikantage anticline in the western Kuqa fold-and-thrust belt, southern Tianshan, NW China

Cited by 23 publications

References 61 publications

Neogene Paleomagnetic Study of the Western Baicheng Depression: Implications for the Intensified Deformation of Tian Shan Since the Latest Miocene

Neogene Paleomagnetic Study of the Western Baicheng Depression: Implications for the Intensified Deformation of Tian Shan Since the Latest Miocene

Structural Coupling Between the Qiman Tagh and the Qaidam Basin, Northern Tibetan Plateau: A Perspective From the Yingxiong Range by Integrating Field Mapping, Seismic Imaging, and Analogue Modeling

Late Cenozoic Clockwise Rotations in the Westernmost Part of the Arcuate Qiulitage Fold‐and‐Thrust Belt of Southern Tian Shan Foreland and Its Tectonic Implications

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