Multi-stage tectonic events of the Eastern Kunlun Mountains, Northern Tibetan Plateau constrained by fission track thermochronology

Tian, Pengfei; Yuan, Wanming; Yang, Xiaoyong; Zhang, Feng; Xue, Chen; Yuan, Erjun

doi:10.1016/j.jseaes.2020.104428

Cited by 24 publications

(9 citation statements)

References 103 publications

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“…7). Similar observations have been made from previous published thermochronology data sets (e.g., Tian et al, 2020) (Fig. 8) and stratigraphic records in northeastern Qaidam Basin (e.g., Ritts and Biffi, 2000;Wu et al, 2011).…”

Section: ■ 5 Discussionsupporting

confidence: 90%

“…20-10 Ma, possibly related to Cenozoic range uplift in response to the Indo-Asian collision (Jolivet et al, 2001;Y. Liu et al, 2005;Yuan et al, 2006;McRivette et al, 2019;Wu et al, 2019a;Tian et al, 2020). Additional published low-temperature thermochronology results suggested early Cenozoic uplift of the Eastern Kunlun Range (e.g., Clark et al, 2010;Wang et al, 2016Wang et al, , 2017aLiu et al, 2017a).…”

Section: ■ 1 Introductionmentioning

confidence: 95%

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Low-temperature thermochronology constraints on the evolution of the Eastern Kunlun Range, northern Tibetan Plateau

Ding

2021

Geosphere

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Signals of uplift and deformation across the Tibetan Plateau associated with the Cenozoic India-Asia collision can be used to test debated deformation mechanism(s) and the growth history of the plateau. The spatio-temporal evolution of the Eastern Kunlun Range in northern Tibet provides a window for understanding the intracontinental tectonic evolution of the region. The Eastern Kunlun Range exposes the Cenozoic Kunlun left-slip fault and kinematically linked thrust belts. In this contribution, integrated field observations and apatite fission-track thermochronology were conducted to constrain the initiation ages of localized thrust faults and the exhumation history of the Eastern Kunlun Range. Our analyses reveal four stages of cooling of the Eastern Kunlun Range. We relate these four stages to the following interpreted tectonic evolution: (1) an initial period of early Cretaceous cooling and slow exhumation over the early Cenozoic, which is associated with the formation of a regional unconformity observed between Cretaceous strata and early Cenozoic sediments; (2) rapid Oligocene cooling that occurred at the eastern domain of the Eastern Kunlun Range related to the southern Qaidam thrusts; (3) extensive rapid cooling since the early-middle Miocene in most of the eastern-central domains and significant uplift of the entire range; and (4) a final pulse of rapid late Miocene-to-present cooling associated with the initiation of the Kunlun left-slip fault and dip-slip shortening at the western and eastern termination of the left-slip fault. Early Cenozoic deformation was distributed along the northern extent of the Tibetan Plateau, and overprinting out-of-sequence deformation migrated back to the south with the initiation of Miocene-to-present deformation in the Eastern Kunlun Range.

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Section: ■ 5 Discussionsupporting

confidence: 90%

Section: ■ 1 Introductionmentioning

confidence: 95%

Low-temperature thermochronology constraints on the evolution of the Eastern Kunlun Range, northern Tibetan Plateau

Ding

2021

Geosphere

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“…Due to insignificant radiation damage (Figure ), the model used the diffusion parameters of Farley (2000) for the apatite U‐Th‐He system. Geological constraints were used, including a present‐day mean temperature of 10 ± 10 °C and a starting point at 100 ± 20 °C for 50 ± 20 Ma (Figure 3a), the latter of which was based on the Eocene apatite fission track ages near the Nuomuhong region (Tian et al., 2020). A prior paleo‐temperature offset for the age‐paleodepth profile was set as 40 ± 10 °C, which was calculated based on typical geothermal gradients of 20–30 °C/km in the Qaidam Basin (Qiu, 2003).…”

Section: Thermal Modelingmentioning

confidence: 99%

“…Previous studies emphasize the Paleocene to Eocene rapid exhumation in the EKLS and argue for an early Cenozoic shortening event in the northern Tibetan Plateau (Clark et al, 2010;Staisch et al, 2020;Tian et al, 2020;Wang et al, 2016aWang et al, , 2017aYuan et al, 2006). However, reanalysis of existing low-temperature thermochronologic data and sedimentary records provides an alternative scenario.…”

Section: Late Oligocene Tectonic Uplift Of the Eklsmentioning

confidence: 99%

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Late Oligocene Tectonic Uplift of the East Kunlun Shan: Expansion of the Northeastern Tibetan Plateau

Zheng

Zhou

et al. 2021

Geophysical Research Letters

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Spatial and temporal patterns of mountain building in the northeastern Tibetan Plateau provide important constraints on competing plateau growth models. We focus on the East Kunlun Shan (EKLS), where the timing of Cenozoic deformation remains controversial. Seven apatite (U‐Th)/He samples were collected around a tilted erosion surface in the middle segment of the EKLS. A break in slope at ∼25 Ma is identified along the paleodepth below the erosion surface, which we interpret to represent the onset of thrust faulting at northern margins of the EKLS. Published thermochronologic data from the South Qilian Shan and North Qilian Shan reveal tectonic uplift at 15–18 and 8–10 Ma, respectively, obviously later than thrust faulting in the EKLS. Our study supports that the northeastern margin of the Tibetan Plateau has migrated from the EKLS to North Qilian Shan since the late Oligocene.

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The Late Cenozoic crustal deformation in the northeastern periphery of the Qaidam Basin, northwest China

Wang,

Shi,

Zhong

et al. 2024

Geological Journal

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The northeastern periphery of the Qaidam Basin is a crucial region for comprehending the northeastward growth of the Tibetan Plateau, as it documents Late Cenozoic crustal deformation that elucidates the plateau's growth process. In this study, we reconstruct three stages of crustal deformation in the northeastern periphery of the Qaidam Basin during the Late Cenozoic based on interpretation of growth strata from five seismic profiles, structural mapping of the typical superimposed folds and detailed detrital zircon analysis within the study area. (1) During the Early Miocene to Late Miocene period (23–8.6 Ma), there was NW–SE extensional deformation in the northeast margin of the Qaidam Basin, which exerted control over the deposition of the Youshashan Formation. (2) The NW–SE shortening occurred during the Late Miocene period (8.6–8.1 Ma), subsequent to the deposition of the Youshashan Formation and preceding the deposition of the Shizigou Formation, resulting in a parallel unconformity between these two geological units. (3) The intense shortening of the NE–SW direction occurred during the Late Miocene and Pliocene epochs (8.1–2.5 Ma). The timing of this deformation aligns with the sedimentary age of the Shizigou Formation, suggesting that the initial deformation age may represent the onset of NE extrusion from the Tibetan Plateau towards the northeast margin of the Qaidam Basin. The present study not only delineates a Late Cenozoic structural dome resulting from two‐stage crustal shortening in the northeastern periphery of the Tibetan Plateau, but also provides a crucial evidence for reconstructing the Late Cenozoic intracontinental deformation process in this region.

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Multi-stage tectonic events of the Eastern Kunlun Mountains, Northern Tibetan Plateau constrained by fission track thermochronology

Cited by 24 publications

References 103 publications

Low-temperature thermochronology constraints on the evolution of the Eastern Kunlun Range, northern Tibetan Plateau

Low-temperature thermochronology constraints on the evolution of the Eastern Kunlun Range, northern Tibetan Plateau

Late Oligocene Tectonic Uplift of the East Kunlun Shan: Expansion of the Northeastern Tibetan Plateau

The Late Cenozoic crustal deformation in the northeastern periphery of the Qaidam Basin, northwest China

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