Northeastward growth of the Tibet plateau deduced from balanced reconstruction of two depositional areas: The Qaidam and Hexi Corridor basins, China

Métivier, François; Gaudemer, Y.; Tapponnier, Paul; Meyer, Bertrand

doi:10.1029/98tc02764

Cited by 381 publications

(332 citation statements)

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“…However, the rates of shortening for the individual faults decreases to the east, as demonstrated by the rates for the north-vergent Tanghenan and Zhangye thrusts. Interestingly, Meyer et al (1998) estimated a shortening rate of 2.1 ± 0.6 mm/yr for a thrust in the piedmont of the Taxueh Shan., Taken together with the shortening rates for the Tanghenan and Zhangye thrusts the Taxueh Shan rate, though not confirmed by quantitative dating, would yield an eastwardly decreasing shortening rate consistent with models for the propagation of the ATF and asymmetric growth of the plateau via associated thrusting (Métivier et al, 1998;Meyer et al, 1998). …”

Section: While There Are Numerous Additional Thrusts Between the Qaidmentioning

confidence: 98%

“…The northeastward propagation of the leftlateral Altyn-Tagh Fault, and the regional northeastward elevation decrease (~3000 m to 1200 m a.s.l. ), suggest a close relationship between sinistral faulting and thrusting in which sinistral motion along the ATF is transferred to the active thrust faults (Métivier et al, 1998;Meyer et al, 1998;. The rates of both sinistral slip on the ATF and shortening across the thrusts should decrease due to the eastward transformation of lateral slip to shortening.…”

Section: Geomorphic Rates Of Thrusting and Crustal Shorteningmentioning

confidence: 99%

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Applications of morphochronology to the active tectonics of Tibet

Ryerson

Finkel²,

Mériaux

et al. 2006

In Situ-Produced Cosmogenic Nuclides and Quantification of Geological Processes

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Abstract. The Himalayas and the Tibetan Plateau were formed as a result of the collision of India and Asia, and provide an excellent opportunity to study the mechanical response of the continental lithosphere to tectonic stress. Geophysicists are divided in their views on the nature of this response advocating either (1) homogeneously distributed deformation with the lithosphere deforming as a fluid continuum or (2) deformation is highly localized with the lithosphere that deforms as a system of blocks. The resolution of this issue has broad implications for understanding the tectonic response of continental lithosphere in general.Homogeneous deformation is supported by relatively low decadal, geodetic slip-rate estimates for the the Altyn Tagh and Karakorum Faults. Localized deformation is supported by high millennial, geomorphic slip-rates constrained by both cosmogenic and radiocarbon dating on these faults. Based upon the agreement of rates determined by radiocarbon and cosmogenic dating, the overall linearity of offset versus age correlations, and on the plateau-wide correlation of landscape evolution and climate history, the disparity between geomorphic and geodetic sliprate determinations is unlikely to be due to the effects of surface erosion on the cosmogenic age determinations. Similarly, based upon the consistency of slip-rates over various observation intervals, secular variations in slip-rate appear to persist no longer than 2000 years and are unlikely to provide reconciliation. Conversely, geodetic and geomorphic slip-rate estimates on the Kunlun fault, which does not have significant splays or associated thrust faults, are in good agreement, indicating that there is no fundamantal reason why these complementary geodetic and geomorphic methods should disagree. Similarly, the geodetic and geomorphic estimates of shortening rates across the northeasten edge of the plateau are in reasonable agreement, and the geomorphic rates on individual thrust faults demonstrate a significant eastward decrease in the shortening rate. This rate decrease is consistent with the transfer of slip from the Altyn Tagh Fault (ATF) to genetically-related thrust mountain building at its terminus. Rates on the ATF suggest a similar decrease in rate, but the current data set is too small to be definitive. Overall, the high, late Pleistocene-Holocene, geomorphic slip velocities on the the major strike-slip faults of Tibet, suggests that they absorb as much of India's convergence relative to Siberia as the Himalayan Main Frontal Thrust on the southern edge of the plateau.

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Section: While There Are Numerous Additional Thrusts Between the Qaidmentioning

confidence: 98%

Section: Geomorphic Rates Of Thrusting and Crustal Shorteningmentioning

confidence: 99%

Applications of morphochronology to the active tectonics of Tibet

Ryerson

Finkel²,

Mériaux

et al. 2006

In Situ-Produced Cosmogenic Nuclides and Quantification of Geological Processes

Self Cite

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“…1). The remarkably low relief of the Tibetan Plateau has been explained by the development of an internal drainage system and the progressive filling of intramontane basins by sediments eroded from the adjacent mountains (Métivier et al, 1998, Sobel et al, 2003Liu-Zeng et al, 2008). Apart from the sedimentcovered areas resulting from the process described above, older low-relief surfaces that are developed in bedrock have been documented in the southeastern Tibetan Plateau (Clark et al, 2004) and in the Lhasa terrane of southern Tibet (Strobl et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Landscape evolution of a bedrock peneplain on the southern Tibetan Plateau revealed by in situ-produced cosmogenic 10Be and 21Ne

et al. 2012

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: Landscape evolution of a bedrock peneplain on the southern Tibetan Plateau revealed by in situ-produced cosmogenic 10Be and 21Ne.-Geomorphology, [153][154][192][193][194][195][196][197][198][199][200][201][202][203][204] AbstractLow-relief bedrock surfaces that occur at high altitude are a common feature of Cenozoic mountain belts and have often been used to infer a significant amount of rock uplift after their generation at low elevation. The timescale over which such surfaces can be preserved at high elevation and the rate at which they are modified by weathering and erosion are poorly known. Here we use cosmogenic 10 Be and 21 Ne to quantify the landscape evolution of a bedrock peneplain in southern Tibet that occurs at an altitude of ~5300 m. The peneplain is developed in Cretaceous granitoids and Jurassic metasediments of the northern Lhasa block (90°E, 31°N) and originally had a minimum extent of ~150 km east-west and ~75 km northsouth. It has been dissected by small rivers that generated a few hundred meters of relief and formed additional bedrock surfaces of limited extent at lower elevation. Local denudation rates for the peneplain and the lower bedrock surfaces -based on 10 Be concentrations in grus samples and amalgamated quartz clasts -cluster between 5 and 11 m Ma -1 (mean = 8.1 m Ma -1 ) and are thought to be representative for the long-term rate of downwearing of these surfaces. Samples from bedrock outcrops and bedrock blocks yield more variable rates (3-20 m Ma -1 ), which partly overestimate the long-term lowering rate, presumably due to block tilting and bedrock inhomogeneity. Spatially averaged 10 Be denudation rates for small river catchments range from 9 to 16 m Ma -1 (mean = 11.8 m Ma -1 ) and are only slightly higher than the local denudation rates. Hence, the incision and widening of valleys proceeds at low rates, which demonstrates that the landscape of the peneplain region is remarkably stable. The combined 21 Ne and 10 Be data in a subset of the samples suggest that the bedrock surfaces have experienced a simple exposure history without periods of burial. Thus, our data do not provide any evidence for extended periods of shielding by ice during past glaciations, which is consistent with the absence of erratic boulders and moraines in the peneplain region.

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“…The Qilian Mountain raised at ~5.3 Ma [11] and began to entirely and rapidly raise at ~3.6 Ma. Sun et al [13] suggested that the late Cenozoic tectonic deformation, marked by folding and thrusting, occurred at ~5.3 Ma.…”

Section: Asian Monsoon Evolutionary History and Phased Himalaya-tp's mentioning

confidence: 99%

Modeling the climate effects of different subregional uplifts within the Himalaya-Tibetan Plateau on Asian summer monsoon evolution

et al. 2012

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Northeastward growth of the Tibet plateau deduced from balanced reconstruction of two depositional areas: The Qaidam and Hexi Corridor basins, China

Abstract: Abstract.We address the problem of late Cenozoic uplift, erosion, and growth of northeastern Tibet by reconstructing, from isopach maps and drill holes, the vol-

Cited by 381 publications

References 31 publications

Applications of morphochronology to the active tectonics of Tibet

Applications of morphochronology to the active tectonics of Tibet

Landscape evolution of a bedrock peneplain on the southern Tibetan Plateau revealed by in situ-produced cosmogenic 10Be and 21Ne

Modeling the climate effects of different subregional uplifts within the Himalaya-Tibetan Plateau on Asian summer monsoon evolution

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