Tectonic evolution of the North Qinling Orogen from subduction to collision and exhumation: Evidence from zircons in metamorphic rocks of the Qinling Group

2016 ◽  
Vol 30 ◽  
pp. 65-78 ◽  
Author(s):  
Hong Yu ◽  
Hong-Fu Zhang ◽  
Xian-Hua Li ◽  
Juan Zhang ◽  
M. Santosh ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Metamorphic Rocks ◽  
Qinling Orogen ◽  
The North ◽  
North Qinling

Geochronology of the transition of eclogite to amphibolite facies metamorphism in the North Qinling orogen of central China

Lithos ◽  
2011 ◽  
Vol 125 (3-4) ◽  
pp. 969-983 ◽  
Author(s):  
Hao Cheng ◽  
Chao Zhang ◽  
Jeffrey D. Vervoort ◽  
Xianhua Li ◽  
Qiuli Li ◽  
...  
Keyword(s):  
Amphibolite Facies ◽  
Central China ◽  
Qinling Orogen ◽  
The North ◽  
Facies Metamorphism ◽  
North Qinling

Structural analysis of ductile shear zones in the North Qinling Orogen and its implications for the evolution of the Proto-Tethys Ocean

2017 ◽  
Vol 52 ◽  
pp. 202-214 ◽  
Author(s):  
Shujuan Zhao ◽  
Sanzhong Li ◽  
Xiyao Li ◽  
Ian Somerville ◽  
Huahua Cao ◽  
...  
Keyword(s):  
Structural Analysis ◽  
Shear Zones ◽  
Qinling Orogen ◽  
The North ◽  
Ductile Shear Zones ◽  
North Qinling ◽  
Ductile Shear ◽  
Tethys Ocean

scholarly journals Early Paleozoic Magmatism and Crustal Evolution in the North Qinling Orogen

2017 ◽  
Vol 91 (s1) ◽  
pp. 121-122
Author(s):  
Bingxiang LIU ◽  
Renhao RUAN ◽  
Shen HAN ◽  
Zikang CUI ◽  
Meng QI ◽  
...  
Keyword(s):  
Crustal Evolution ◽  
Early Paleozoic ◽  
Qinling Orogen ◽  
The North ◽  
North Qinling

scholarly journals Geochemistry and Zircon U-Pb-Hf Isotopes of Metamorphic Rocks from the Kaiyuan and Hulan Tectonic Mélanges, NE China: Implications for the Tectonic Evolution of the Paleo-Asian and Mudanjiang Oceans

Minerals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 836
Author(s):  
Zuozhen Han ◽  
Jingjing Li ◽  
Zhigang Song ◽  
Guyao Liu ◽  
Wenjian Zhong ◽  
...  
Keyword(s):  
Tectonic Evolution ◽  
Middle Triassic ◽  
Late Triassic ◽  
Metamorphic Rocks ◽  
Late Permian ◽  
Early Permian ◽  
Ne China ◽  
The North ◽  
Tectonic Mélange ◽  
Final Closure

The Late Paleozoic–Early Mesozoic tectonic evolution of the Changchun-Yanji suture (CYS) was mainly associated with the Paleo-Asian and Mudanjiang tectonic regimes. However, the spatial and temporal overprinting and variations of these two regimes remains are still dispute. In order to evaluate this issue, in this contribution, we present new zircon U-Pb ages and a whole-rock geochemical and zircon Hf isotopic dataset on a suite of metamorphic rocks, including gneisses, actinolite schist, leptynites, and biotite schists, from tectonic mélanges in northern Liaoning and central Jilin provinces, NE China. Based on zircon LA-ICP-MS U-Pb dating results, protoliths show wide ranges of aging spectrum, including Paleoproterozoic (2441 Ma), Early Permian (281 Ma), Late Permian (254 Ma), and Late Triassic (230 Ma). The Permian protoliths of leptynites from the Hulan Tectonic Mélange (HLTM) and gneisses from the Kaiyuan Tectonic Mélange (KYTM) exhibit arc-related geochemical signatures, implying that the Paleo-Asian Ocean (PAO) did not close prior to the Late Permian. The Late Triassic protoliths of gneisses from the KYTM, in combination with previously reported coeval igneous rocks along the CYS, comprises a typical bimodal igneous suite in an E–W-trending belt, suggesting a post-orogenic extensional environment. Consequently, we infer that the final closure of the PAO took place during the Early–Middle Triassic. The Early Permian protoliths of biotite schists from the HLTM are alkali basaltic rocks and contain multiple older inherited zircons, which, in conjunction with the geochemical features of the rocks, indicate that they were generated in a continental rift related to the initial opening of the Mudanjiang Ocean (MO). Data from this contribution and previous studies lead us to conclude that the MO probably opened during the Middle Triassic, due to the north–south trending compression caused by the final closure of the PAO.

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