Displacement and timing of left-lateral faulting in the Kunlun Fault Zone, northern Tibet, inferred from geologic and geomorphic features

Fu, Bihong; Awata, Yasuo

doi:10.1016/j.jseaes.2006.03.004

Cited by 124 publications

(58 citation statements)

References 48 publications

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“…Finite displacement along the fault is also poorly constrained although some workers have suggested 85 km of apparent deflection of the Yellow River along the eastern segment of the fault (Gaudemer et al 1989). Fu & Awata (2007) suggested that maximum offset of basement rocks was c. 100 km, and that maximum timing of shearing was 10 AE 2 Ma, giving a long-term slip rate of c. 10 mm a À1 . In contrast, Jolivet et al (2003) suggested that strike-slip motion in the western Kun Lun ranges started at least in the Late Eocene simultaneously with Eocene to Oligocene SW-NE compression.…”

Section: Kun Lun Faultmentioning

confidence: 99%

Crustal–lithospheric structure and continental extrusion of Tibet

Searle

Elliott

Phillips

et al. 2011

JGS

231

154

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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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Section: Kun Lun Faultmentioning

confidence: 99%

Crustal–lithospheric structure and continental extrusion of Tibet

Searle

Elliott

Phillips

et al. 2011

JGS

231

154

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show abstract

“…; northeastern edge with the contemporary Anyemaqen ice-field) (Figure 2). The bedrock lithology consists mainly of sandstones and shales with granite intrusions (Liu et al, 1988), and the bedrock structure is dominated by WNW-ESE strike-slip faults (Fu and Awata, 2007). B B u r h a n B u d a i S h a n B u r h a n B u d a i S h a n B a y a n H a r S h a n 3 Q in g k a n g h ig h w a y A n y e m a q e n S h a n A n y e m a q e n S h a n …”

Section: Physiography Of the Bayan Har Areamentioning

confidence: 99%

Glacial geomorphology of the Bayan Har sector of the NE Tibetan Plateau

Heyman¹,

Hättestrand²,

Stroeven³

2008

Journal of Maps

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Abstract:We here present a detailed glacial geomorphological map covering 136,500 km 2 of the Bayan Har sector of the northeastern Tibetan Plateau -an area previously suggested to have nourished the most extensive Quaternary glaciers of the Tibetan Plateau. The map, presented at a scale of 1:650,000, is based on remote sensing of a 90 m SRTM digital elevation model and 15/30 m Landsat ETM+ satellite imagery. Seven landform types have been mapped; glacial valleys, glacial troughs, glacial lineations, marginal moraines, marginal moraine remnants, meltwater channels and hummocky terrain. A large number of glacial landforms exist, concentrated around mountain blocks protruding above the surrounding plateau area, testifying to former glacial activity. In contrast, large plateau areas of lower altitude lack glacial landforms. The mapped glacial geomorphology indicates multiple former glacial advances primarily by valley and piedmont glaciers, but lends no support to the hypothesis of ice sheet scale glaciation in the area. The presented glacial geomorphological map demonstrates the usefulness of remote sensing techniques for mapping the glacial geomorphology of the Tibetan Plateau, and it will be used for reconstructing the paleoglaciology of the Bayan Har sector of the northeastern Tibetan Plateau.

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“…In the Hoh Xil Lake area, volcanic rocks also were generally distributed along the South Kunlun sinistral strike-slip faults and their subordinate faults. Eruptions of volcanic rocks were associated with normal faulting in pull-apart basins or grabens along the Bukadaban-Jingyu Lake-Muztagh belts [26,31,39,40]. Both the Jingyu Lake and Kusai Lake pull-apart basins were filled with late Miocene lacustrine and fluvial sediments, suggesting that the South Kunlun sinistral strikeslip fault was reactivated during early Miocene time [39,40].…”

Section: Geological Setting and Samplesmentioning

confidence: 99%

“…Sanidines from the Malanshan rhyolites were dated by 40 Ar/ 39 Ar methods to yield a plateau age of 9.37±0.30 Ma (Figure 5(c)), and an inverse isochron age of 9.29±0.48 Ma within large error margins. This cooling age of 9.37±0.30 Ma probably dates the eruption of the Malanshan rhyolitic lavas.…”

mentioning

confidence: 96%

“…Rhyolites and leucogranites from the Ulugh Muztagh area were derived from melting of metapelites in the thickened crust [21]. This study reports the geochemistry and zircon U-Pb and 40 Ar/ 39 Ar geochronology of crustally derived rocks from the Hoh Xil Lake area, including not only the leucogranites of Bukadaban but also the rhyolites of Kekao Lake, Malanshan and Hudongliang, in order to improve our understanding of leucogranite petrogenesis and middle and lower crustal thickening on the northern Tibetan Plateau.…”

mentioning

confidence: 99%

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