Eocene onset and late Miocene acceleration of Cenozoic intracontinental extension in the North Qinling range–Weihe graben: Insights from apatite fission track thermochronology

2013 ◽  
Vol 584 ◽  
pp. 281-296 ◽  
Author(s):  
Jianhui Liu ◽  
Peizhen Zhang ◽  
Richard O. Lease ◽  
Dewen Zheng ◽  
Jinglin Wan ◽  
...  
2021 ◽  
Vol 9 ◽  
Author(s):  
Pengju He ◽  
Chunhui Song ◽  
Yadong Wang ◽  
Yihu Zhang ◽  
Wenqi Chen ◽  
...  

The Cenozoic tectonic evolution of the North Qaidam-Qilian Shan fold-thrust belt in the northern Tibetan Plateau is important to understanding the tectonic rejuvenation of orogeny and growth of the plateau. However, the deformation processes in this region remain controversial. This study presents new apatite fission track (AFT) data from Paleogene strata in the northern Qaidam Basin to investigate the time of deformation in this site. Thermal modeling of these partially annealed detrital AFT ages shows a thermal history with a noticeable transition from heating to cooling after ∼10 Ma. This transition is attributed to the intensified thrusting and folding of the northern Qaidam Basin since ∼10 Ma. Integrated with published tectonics and thermochronology results, we suggest the North Qaidam-Qilian Shan fold-thrust belt experienced prevailing tectonism since the late Miocene.


Minerals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 604
Author(s):  
Evgeny V. Vetrov ◽  
Johan De Grave ◽  
Natalia I. Vetrova ◽  
Fedor I. Zhimulev ◽  
Simon Nachtergaele ◽  
...  

The West Siberian Basin (WSB) is one of the largest intracratonic Meso-Cenozoic basins in the world. Its evolution has been studied over the recent decades; however, some fundamental questions regarding the tectonic evolution of the WSB remain unresolved or unconfirmed by analytical data. A complete understanding of the evolution of the WSB during the Mesozoic and Cenozoic eras requires insights into the cooling history of the basement rocks as determined by low-temperature thermochronometry. We presented an apatite fission track (AFT) thermochronology study on the exposed parts of the WSB basement in order to distinguish tectonic activation episodes in an absolute timeframe. AFT dating of thirteen basement samples mainly yielded Cretaceous cooling ages and mean track lengths varied between 12.8 and 14.5 μm. Thermal history modeling based on the AFT data demonstrates several Mesozoic and Cenozoic intracontinental tectonic reactivation episodes affected the WSB basement. We interpreted the episodes of tectonic activity accompanied by the WSB basement exhumation as a far-field effect from tectonic processes acting on the southern and eastern boundaries of Eurasia during the Mesozoic–Cenozoic eras.


2008 ◽  
Vol 43 (2-6) ◽  
pp. 1175
Author(s):  
J. De Grave ◽  
P. Van den haute ◽  
M.M. Buslov ◽  
B. Dehandschutter ◽  
S. Glorie

2005 ◽  
pp. 527-566 ◽  
Author(s):  
Barry P. Kohn ◽  
Andrew J.W. Gleadow ◽  
Roderick W. Brown ◽  
Kerry Gallagher ◽  
Matevz Lorencak ◽  
...  

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