Diachronous uplift in intra-continental orogeny: 2D thermo-mechanical modeling of the India-Asia collision

Bian, Shuang; Gong, Jing‐Xu; Lin, Chunye; Zuza, Andrew V.; Chen, Hanlin; Lin, Xiubin; Cheng, Xiaogan; Yang, Rong

doi:10.1016/j.tecto.2019.228310

Cited by 23 publications

(17 citation statements)

References 129 publications

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“…To test this model, here we conducted 2D thermo‐mechanical simulations (Figure S4 in Supporting Information S1) adopting the I2VIS code (Gerya & Yuen, 2003) to investigate the slab underthrusting process (Section S1 in Supporting Information S1). Results suggest that the Indian slab began to underthrust northward after slab detachment, which significantly increases upper‐plate compressional stress and favors the strong coupling with the overlying plate (Figure S5 in Supporting Information S1, e.g., Bian, Gong, Chen, et al., 2020; Genge et al., 2021; L. Li, Murphy, et al., 2020; S. H. Li, van Hinsbergen, et al., 2020). This process could thicken the Tibetan crust by ∼30 km to reach ∼80 km thickness (Figure S6a in Supporting Information S1), which related topographic uplift to elevations >4 km (Figure S6b in Supporting Information S1).…”

Section: Discussionmentioning

confidence: 99%

Along‐Strike Variation in the Initiation Timing of the North‐Trending Rifts in Southern Tibet as Revealed From the Yadong‐Gulu Rift

et al. 2022

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A key issue in the Cenozoic evolution of the Tibetan plateau is the geodynamic drivers for north‐trending rifting in southern Tibet. Recent studies have demonstrated an eastward propagation pattern for rift initiation, but the along‐strike variations remain poorly resolved. Two models that predict different north‐south rift kinematics include northward underthrusting or southward tearing of the Indian lithospheric slab, predicting a northward or southward propagation trend of individual rifts along strike, respectively. The Yadong‐Gulu rift (YGR) is an ideal case to investigate this issue due to its long strike length (∼500 km) and location above proposed slab‐tear structures. Here, we compile constraints on both rift initiation and acceleration, and report new apatite fission track and (U‐Th)/He thermochronological data along the southern segment of YGR. Our main findings are as follows. First, the rifts west of the YGR initiated simultaneously along strike, which we suggest is at odds with predictions of either slab‐tear or slab‐underthrusting models. However, most of these rifts show a northward younging pattern in rift acceleration, which may be governed by low‐angle Indian slab underthrusting released by slab tearing. Second, the initiation timing of the Yadong rift is constrained at ∼13–11 Ma. Combined with published constraints along strike, we demonstrate a clear northward propagation in rift initiation along the YGR. This kinematic pattern may be affected by its orientation of the most oblique northeast‐trending among all rift systems or the outward expansion of the Himalayan arc.

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Section: Discussionmentioning

confidence: 99%

Along‐Strike Variation in the Initiation Timing of the North‐Trending Rifts in Southern Tibet as Revealed From the Yadong‐Gulu Rift

et al. 2022

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“…Li et al, 2020b;Qi et al, 2016). This relationship strongly suggests that orogeny since the Proterozoic weakened the crust and mantle lithosphere here to be reactivated in the Himalayan-Tibetan orogen (e.g., Bian et al, 2020;L. Chen et al, 2017), thus establishing the northern limit of the Tibetan Plateau.…”

Section: Implications For Proterozoic-phanerozoic Paleogeographic Recmentioning

confidence: 97%

Punctuated Orogeny During the Assembly of Asia: Tectonostratigraphic Evolution of the North China Craton and the Qilian Shan From the Paleoproterozoic to Early Paleozoic

Zuza

Yin

et al. 2021

Tectonics

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Asian and the Tethyan oceanic domains are separated by the Tarim and North China cratons whose geologic histories are critical for deciphering the interactions of the two orogenic systems to the north and south. A major obstacle for establishing the geologic history of Tarim and North China cratons is that the two tectonic entities are currently bounded by Cenozoic structures along the southern margin of the Tian Shan and the northern margin of the Tibetan plateau (Figure 1). These structures have either reactivated or strongly modified the earlier tectonic configurations of the region (e.g., Yin & Nie, 1996). For example, Cenozoic structures that bound the southern margin of Tarim and North China cratons overprinted Mesozoic extensional basins (X.

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“…The magnetotelluric exploration show that two zones with high electrical conductivity in the lower crust extend from the Tibetan Plateau into its southeastern edge, which suggests the existence of viscous lower crustal flow beneath the southeastern edge of the Tibetan Plateau (Bai et al, 2010). The recent two-dimensional thermo-mechanical simulations of the India-Asia collision of Bian et al (2020) indicated that the blocks adjacent to the Tibetan Plateau, with hotter Moho temperatures and a weaker lithosphere, could respond rapidly to the convergence of the IDP and Eurasia (Bian et al, 2020). These results indicate that the viscous lower crustal flows may dominate the ductile deformation of the upper crustal of the Tibetan Plateau and its periphery since the Late Oligocene and Early Miocene.…”

Section: Tablementioning

confidence: 99%

Magnetostratigraphic Evidence From the Gengma Basin for the Fast Response of the Crustal Rotation of the Northern Part of the Shan‐Thai Block to the India‐Eurasia Convergence

Sun

Tong

Yang

et al. 2022

Geochem Geophys Geosyst

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The Cenozoic tectonic evolution of the southeastern edge of the Tibetan Plateau is interpreted in terms of two alterative dynamic mechanisms: lateral extrusion of coherent lithospheric blocks and viscous lower crustal flow. To contribute to this debate, we conducted a magnetostratigraphic study of the Early Miocene sedimentary strata of the Gengma Basin, in the northern part of the Shan‐Thai Block (STB). The results show that variations in the deposition rate were synchronous with the rate of clockwise rotation during ∼18.05–15.93 Ma, indicating that the crustal clockwise rotation of the northern STB was the driver of the tectonic transformation of the NE‐SW trending strike‐slip system within the STB by at least ∼18.05 Ma. The rapid decrease in the clockwise rotational rate of the Gengma Basin was also synchronous with the sharp decrease in the convergence rate between the Indian Plate (IDP) and Eurasia at ∼17.23 Ma, which is similar to that occurred in the interior of the Tibetan Plateau during the Paleocene and Eocene, demonstrating the fast response of the southeastern edge of the Tibetan Plateau to the convergence of the IDP and Eurasia, in the form of the continuous upper crustal ductile deformation of the Tibetan Plateau and its periphery. The lateral flow of the viscous lower crust beneath the southeastern edge of the Tibetan Plateau may be the predominant driver of the tectonic evolution of the southeastern edge of the Tibetan Plateau since the Early Miocene.

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Diachronous uplift in intra-continental orogeny: 2D thermo-mechanical modeling of the India-Asia collision

Cited by 23 publications

References 129 publications

Along‐Strike Variation in the Initiation Timing of the North‐Trending Rifts in Southern Tibet as Revealed From the Yadong‐Gulu Rift

Along‐Strike Variation in the Initiation Timing of the North‐Trending Rifts in Southern Tibet as Revealed From the Yadong‐Gulu Rift

Punctuated Orogeny During the Assembly of Asia: Tectonostratigraphic Evolution of the North China Craton and the Qilian Shan From the Paleoproterozoic to Early Paleozoic

Magnetostratigraphic Evidence From the Gengma Basin for the Fast Response of the Crustal Rotation of the Northern Part of the Shan‐Thai Block to the India‐Eurasia Convergence

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