Cooling history and tectonic exhumation stages of the south-central Tibetan Plateau (China): Constrained by 40Ar/39Ar and apatite fission track thermochronology

Wang, Yu; Zhang, Xuemin; Sun, Liang; Wan, Jie

doi:10.1016/j.jseaes.2005.11.001

Cited by 48 publications

(20 citation statements)

References 26 publications

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“…The Qiangtang-Asia collision ended the Neopaleozoic marginal basin formation and caused the initiation of the Triassic foreland basin. During the Norian Age, most parts of the Qiangtang block were uplifted, and paleo-weathering occurred widely in the area (Wang et al 2004Wang et al 2007;Fu et al 2010). The paleo-weathering crusts marked the end of the Triassic foreland basin (Fu et al 2010).…”

Section: Tectonic Setting Of the Study Areamentioning

confidence: 99%

“…During the Late Jurassic-Early Cretaceous, the Qiangtang block likely collided with the Lhasa block along the Bangong-Nujiang suture (Kapp et al 2003;Murphy and Yin 2003;Wang et al 2007;Murphy et al 2010). This collision resulted in a series of granitic intrusions in the BangongNujiang suture.…”

Section: Late Jurassic-cretaceous Exhumationmentioning

confidence: 99%

“…This collision resulted in a series of granitic intrusions in the BangongNujiang suture. Examples include the Pangduo intrusions of 123.8 ± 1.8 -129.6 ± 7.8 Ma (U-Pb zircon dating; Wu et al 2004) and the Dangxiong-Sangxiong intrusions of ~130 -120 Ma (Wang et al 2007). The 40 Ar/…”

Section: Late Jurassic-cretaceous Exhumationmentioning

confidence: 99%

“…Sedimentary studies show that the formation and closure of the Mesozoic Qiangtang basin were closely connected with the tectonic evolutionary processes in the Bangong-Nujiang Ocean (Wang et al 2004Zhang et al 2009). Evidence from thermochronology and Cenozoic volcanics indicates that the surface uplift of the Qiangtang block was mainly controlled by the India-Asia collision (Wang et al 2007;.…”

Section: Introductionmentioning

confidence: 99%

“…The cooling and exhumation history can be reconstructed based on these fission-track dates, revealing the geological evolution of a site. Researchers have previously used fission track dating to resolve numerous geological problems in tectonothermal evolution (Fellin et al 2006;Liu et al 2009), collisional orogeny (Liu et al 2000, magmatic activity (Yang et al 1995(Yang et al , 2003, crust exhumation and mountain uplift (Jain et al 2000;Garver et al 2005;Wang et al 2007; Lee et al 2010), fault action (Tagami 2005;Yuan et al 2006), and provenance studies (Carter and Moss 1999). Although many researchers have recently reported ZFT dates for the Tibetan Plateau, the thermo-chronological research on the Qiangtang block remains relatively scarce.…”

Section: Introductionmentioning

confidence: 99%

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Mesozoic and Cenozoic Cooling History of the Qiangtang Block, Northern Tibet, China: New Constraints from Apatite and Zircon Fission Track Data

Song¹,

Wang²,

Fu³

et al. 2013

Terr. Atmos. Ocean. Sci.

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This study used a new set of zircon and apatite fission track ages to quantitatively document the tectonic evolution and cooling histories of the Qiangtang block of the central Tibetan Plateau. The results indicate that the Qiangtang block underwent three cooling stages at ~148 -73, ~50 -20, and ~20 -0 Ma. The three-stage cooling history and tectonic exhumation were controlled by the closure of the Bangong-Nujiang Suture during the Late Jurassic-Late Cretaceous, the India-Asia collision in the Paleogene, and the underthrusting of the India Plate during the Late Cenozoic. In addition to revealing the Late JurassicLate Cretaceous cooling events, the annealing patterns of the zircon fission track samples indicate different burial depths, which may help identify the Jurassic basin characteristics of the Qiangtang block. The apatite fission track (AFT) ages range from 60 ± 5 Ma to 26 ± 3 Ma, with a mean age of 44 Ma. These ages indicate that the Cenozoic exhumation of the Qiangtang block may have started in the Eocene. Inverse modeling of the AFT data shows that the Qiangtang block had a relatively slow cooling rate of approximately 0.5 -1°C Myr -1 from 50 to 20 Ma. After ~20 Ma, most of the samples show evidence for a rapid cooling stage with a cooling rate of 4 -6°C Myr -1 .

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Section: Tectonic Setting Of the Study Areamentioning

confidence: 99%

Section: Late Jurassic-cretaceous Exhumationmentioning

confidence: 99%

Section: Late Jurassic-cretaceous Exhumationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mesozoic and Cenozoic Cooling History of the Qiangtang Block, Northern Tibet, China: New Constraints from Apatite and Zircon Fission Track Data

Song¹,

Wang²,

Fu³

et al. 2013

Terr. Atmos. Ocean. Sci.

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Formation and evolution of Xianshuihe Fault Belt in the eastern margin of the Tibetan Plateau: Constraints from structural deformation and geochronology

Chen

Zhang

et al. 2020

Geological Journal

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The Xianshuihe Fault Belt (XSF), along which the syntectonic Zheduoshan batholith was emplaced, has great significance for the reconstruction of the tectonic framework in the eastern margin of the Tibetan Plateau. In this contribution, formation process and evolution of the XSF are discussed based on the structural deformation in the field and the geochronology of Zheduoshan batholith. The results show that the XSF current arc‐shaped protrusion to the north‐east probably was formed by a fracture of the clockwise rotation compression that extended northward to the periphery with the eastern Himalayan tectonic syntaxis as the centre. It is a complex fault belt formed by the superposition of multi‐stage structures. In the early‐stage formation and evolution of the XSF, the Oligocene‐Miocene migmatite zone and Miocene granites of the Zheduoshan batholith were emplaced. Among them, the lower limit of the XSF's initial activity time was not less than 47 Ma that was limited by the Zircon U–Pb geochronology of migmatite zone formed under the compression system. During the emplacement of Miocene granites, the XSF underwent a process from compression to sinistral strike‐slip, and the geochronology indicates that the onset of the XSF sinistral strike slip should not be less than 14 Ma. After syntectic magmatism, the XSF also experienced the shear deformation (from ductile to brittle) with sinistral kinematics. 40Ar‐39Argeochronology results show that the ductile shear deformation mainly occurred around 5.5–3.2 Ma and accompanied a staged and differential uplift from north to south. It extended to the south along the weak crustal zone of Anninghe, Daliangshan, Xiaojiang, and other faults, forming the Xianshuihe–Anninghe–Xiaojiang sinistral strike‐slip fault system on the eastern margin of the Tibetan Plateau, and large‐scale sinistral strike slip began around 5 Ma. Our new insights lay a foundation for understanding and dissecting the formation and evolution of the Tibetan Plateau eastern margin.

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New 40Ar/39Ar and (U-Th)/He dating for the Zhunuo porphyry Cu deposit, Gangdese belt, southern Tibet: implications for pulsed magmatic-hydrothermal processes and ore exhumation and preservation

et al. 2020

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Understanding the magmatic-hydrothermal cooling and exhumation history is fundamental for investigating porphyry deposit formation and preservation. In the Zhunuo porphyry copper deposit of southern Tibet, hydrothermal biotite related to early potassic alteration likely formed from 14.7 ± 0.3 Ma (zircon U-Pb age) to 14.23 ± 0.13 Ma (molybdenite Re-Os age) and cooled below the closure temperature for 40 Ar/ 39 Ar system at 13.91 ± 0.05 Ma (hydrothermal biotite 40 Ar/ 39 Ar plateau age). The 40 Ar/ 39 Ar spectra of another hydrothermal biotite sample that was selectively replaced by chlorite record the timing of late phyllic alteration at 13.53 ± 0.08 Ma. Zhunuo hydrothermal alteration and mineralization likely ceased at 13.09 ± 0.07 Ma based on the 40 Ar/ 39 Ar plateau age of the fresh magmatic biotite crystals. The biotite 40 Ar/ 39 Ar systematics have not been reset by~12.0 Ma post-mineralization granite porphyry within ore district, which is likely due to rapid cooling and/or absence of fluid exsolution for the granite porphyry. In combination with previous zircon U-Pb and molybdenite Re-Os data, two-pulses of magmatic-hydrothermal activity from 14.78 ± 0.11 to 14.44 ± 0.05 Ma and from 14.23 ± 0.13 to 13.53 ± 0.08 Ma can be recognized at Zhunuo. (U-Th)/He thermochronological data on zircon and apatite from the inter-mineralization monzogranite porphyry suggest three cooling events characterized by first-stage magmatic cooling at a rate of~1850°C/m.y., and two later phases of uplift and exhumation at~70°C/m.y. and~10°C/m.y. Approximately 1.4-km thickness of materials have been removed from the Zhunuo Miocene monzogranite porphyry during uplift and erosion, including a large volume of ore.

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Cooling history and tectonic exhumation stages of the south-central Tibetan Plateau (China): Constrained by 40Ar/39Ar and apatite fission track thermochronology

Cited by 48 publications

References 26 publications

Mesozoic and Cenozoic Cooling History of the Qiangtang Block, Northern Tibet, China: New Constraints from Apatite and Zircon Fission Track Data

Mesozoic and Cenozoic Cooling History of the Qiangtang Block, Northern Tibet, China: New Constraints from Apatite and Zircon Fission Track Data

Formation and evolution of Xianshuihe Fault Belt in the eastern margin of the Tibetan Plateau: Constraints from structural deformation and geochronology

New 40Ar/39Ar and (U-Th)/He dating for the Zhunuo porphyry Cu deposit, Gangdese belt, southern Tibet: implications for pulsed magmatic-hydrothermal processes and ore exhumation and preservation

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