Tectonic history of the Altyn Tagh fault system in northern Tibet inferred from Cenozoic sedimentation

Yin, An; Rumelhart, Peter E.; Butler, Robert F.; Cowgill, Eric; Harrison, T. Mark; Foster, David A.; Ingersoll, Raymond V.; Zhang, Qing; Xian-Qiang, Zhou; Wang, Xiaofeng; Hanson, Andrew D.; Raza, Asaf

doi:10.1130/0016-7606(2002)114<1257:thotat>2.0.co;2

Cited by 630 publications

(651 citation statements)

References 85 publications

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“…As a result of the more frequent data acquisition from satellite missions, such as Sentinel-1A, ALOS-2 and the upcoming Sentinel-1B, similar studies will become increasingly common. The relative low slip rate indicates that the ATF does not transfer a significant part of the convergence between India and Asia into the northeastward extrusion of the Tibetan Plateau [76], and the deformation pattern is close to the continuum deformation models [2].…”

Section: Discussionmentioning

confidence: 99%

“…Indeed there are several examples where such a discrepancy occurs between geological and geodetic rates in several settings worldwide (e.g., Papanikolaou et al [74]; Kenner and Simons, [75]) However, some geological authors suggest a low slip rate of the ATF that is consistent with our results. Yin et al [76] derived an average rate of 9˘2 mm/year since 49 Ma. This significant difference was reconciled by geologic [77] and recent geodetic [17] data, which both agree on a slip rate of 9.0˘4.0 mm/year.…”

Section: Discussionmentioning

confidence: 99%

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Interseismic Deformation of the Altyn Tagh Fault Determined by Interferometric Synthetic Aperture Radar (InSAR) Measurements

Zhu

Wen

et al. 2016

Remote Sensing

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Abstract:The Altyn Tagh Fault (ATF) is one of the major left-lateral strike-slip faults in the northeastern area of the Tibetan Plateau. In this study, the interseismic deformation across the ATF at 85˝E was measured using 216 interferograms from 33 ENVISAT advanced synthetic aperture radar images on a descending track acquired from 2003 to 2010, and 66 interferograms from 15 advanced synthetic aperture radar images on an ascending track acquired from 2005 to 2010. To retrieve the pattern of interseismic strain accumulation, a global atmospheric model (ERA-Interim) provided by the European Center for Medium Range Weather Forecast and a global network orbital correction approach were applied to remove atmospheric effects and the long-wavelength orbital errors in the interferograms. Then, the interferometric synthetic aperture radar (InSAR) time series with atmospheric estimation model was used to obtain a deformation rate map for the ATF. Based on the InSAR velocity map, the regional strain rates field was calculated for the first time using the multi-scale wavelet method. The strain accumulation is strongly focused on the ATF with the maximum strain rate of 12.4ˆ10´8/year. We also show that high-resolution 2-D strain rates field can be calculated from InSAR alone, even without GPS data. Using a simple half-space elastic screw dislocation model, the slip-rate and locking depth were estimated with both ascending and descending surface velocity measurements. The joint inversion results are consistent with a left-lateral slip rate of 8.0˘0.7 mm/year on the ATF and a locking depth of 14.5˘3 km, which is in agreement with previous results from GPS surveys and ERS InSAR results. Our results support the dynamic models of Asian deformation requiring low fault slip rate.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Interseismic Deformation of the Altyn Tagh Fault Determined by Interferometric Synthetic Aperture Radar (InSAR) Measurements

Zhu

Wen

et al. 2016

Remote Sensing

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“…Initiation of slip along the Altyn Tagh Fault is thought to have been late Oligocene-earliest Miocene (c. 23 Ma) from strata in the Xorkol Basin bounding the Altyn Tagh Fault at 928E (Yue et al 2001(Yue et al , 2003. However, Yin et al (2002) estimated a significantly earlier age of fault initiation at 49 Ma with a total slip of c. 470 AE 70 km, yielding a rate of 9 AE 2 mm a À1 . Provenance matching using zircon dating of Miocene conglomerate clasts constrains the long-term slip rate to ,10 mm a À1 (Yue et al 2003).…”

Section: Geological Offsets and Slip Ratesmentioning

confidence: 99%

Crustal–lithospheric structure and continental extrusion of Tibet

Searle

Elliott

Phillips

et al. 2011

JGS

229

151

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Crustal shortening and thickening to c. 70-85 km in the Tibetan Plateau occurred both before and mainly after the c. 50 Ma India-Asia collision. Potassic-ultrapotassic shoshonitic and adakitic lavas erupted across the Qiangtang (c. 50-29 Ma) and Lhasa blocks (c. 30-10 Ma) indicate a hot mantle, thick crust and eclogitic root during that period. The progressive northward underthrusting of cold, Indian mantle lithosphere since collision shut off the source in the Lhasa block at c. 10 Ma. Late Miocene-Pleistocene shoshonitic volcanic rocks in northern Tibet require hot mantle. We review the major tectonic processes proposed for Tibet including 'rigid-block', continuum and crustal flow as well as the geological history of the major strikeslip faults. We examine controversies concerning the cumulative geological offsets and the discrepancies between geological, Quaternary and geodetic slip rates. Low present-day slip rates measured from global positioning system and InSAR along the Karakoram and Altyn Tagh Faults in addition to slow long-term geological rates can only account for limited eastward extrusion of Tibet since Mid-Miocene time. We conclude that despite being prominent geomorphological features sometimes with wide mylonite zones, the faults cut earlier formed metamorphic and igneous rocks and show limited offsets. Concentrated strain at the surface is dissipated deeper into wide ductile shear zones.

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“…Generally, strike-slip faults within continental interiors often move in response to distal plate collisions (e.g. Burtman et al 1996;Yin et al 2002). Constraining the spatio-temporal distribution of activity along such faults is therefore of great significance in terms of our understanding of how oblique deformation is accommodated in transpressional settings.…”

Section: Geological Evolution Of Central Asian Basins and The Westernmentioning

confidence: 99%

Geological evolution of Central Asian Basins and the western Tien Shan Range

Brunet

Sobel

McCann³

2017

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The geological evolution of Central Asia commenced with the evolution of a complex Precambrian–Palaeozoic orogen. Cimmerian blocks were then accreted to the southern margin during the Mesozoic, leading to tectonic reactivation of older structures and discrete episodes of basin formation. The Indian and Arabian blocks collided with Asia during the Cenozoic, leading to renewed structural reactivation, intracontinental deformation and basin development. This complex evolution resulted in the present-day setting of an elongated Tien Shan range flanked by large Mesozoic–Cenozoic sedimentary basins with smaller intramontane basins distributed within the range. The aim of this volume is to present multidisciplinary results and reviews from research groups in Europe and Central Asia that focus on the western part of the Tien Shan and some of the large sedimentary basins in that area. These works elucidate the Late Palaeozoic–Cenozoic tectono-sedimentary evolution of the area. Emphasis is placed on the collision of terranes and/or continents and the ensuing fault reactivation; the impact of changes in climate on the sedimentation is also examined.

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Tectonic history of the Altyn Tagh fault system in northern Tibet inferred from Cenozoic sedimentation

Cited by 630 publications

References 85 publications

Interseismic Deformation of the Altyn Tagh Fault Determined by Interferometric Synthetic Aperture Radar (InSAR) Measurements

Interseismic Deformation of the Altyn Tagh Fault Determined by Interferometric Synthetic Aperture Radar (InSAR) Measurements

Crustal–lithospheric structure and continental extrusion of Tibet

Geological evolution of Central Asian Basins and the western Tien Shan Range

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