Late Jurassic‐Early Cretaceous Deformation in the Western Yanshan Fold‐Thrust Belt: Insights From Syntectonic Sedimentation in the Chicheng Basin, North China

Tectonics ◽  
2019 ◽  
Vol 38 (7) ◽  
pp. 2449-2476 ◽  
Author(s):  
Chengfa Lin ◽  
Shaofeng Liu ◽  
Xiaofei Shi ◽  
Qitian Zhuang
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
North China ◽  
Thrust Belt ◽  
Syntectonic Sedimentation

scholarly journals Geochemical Evidence for Thickening and Thinning of Lower Crust beneath the Jiaodong Peninsula: Implications for Late Mesozoic Destruction of the Eastern North China Craton

Lithosphere ◽  
2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
YaYun Liang ◽  
Wenhui Guo ◽  
Yao Ma ◽  
Enquan Zhao
Keyword(s):  
Continental Crust ◽  
Early Cretaceous ◽  
North China Craton ◽  
Late Jurassic ◽  
North China ◽  
Temporal Variations ◽  
Late Mesozoic ◽  
Jiaodong Peninsula ◽  
Intrusive Rocks ◽  
Subducting Slab

Abstract The eastern North China Craton (NCC) has been recognised as undergoing cratonic destruction during the Mesozoic; however, the mechanism of its destruction is still unclear. The main difference between the proposed models is whether the lower continental crust (LCC) underwent thinning. In this study, we conducted comprehensive analyses of Late Mesozoic felsic intrusive rocks, including Late Jurassic granites (166–146 Ma), Early Cretaceous granodiorites (136–123 Ma), and latest Early Cretaceous granites (123–108 Ma) from the Jiaodong Peninsula, located on the southeastern margin of the NCC. These rocks allowed us to investigate variations in the LCC thickness in this region and to further discuss the destruction mechanism of the eastern NCC. Here, temporal variations in crustal thickness can be tracked using whole-rock La/Yb ratios of the felsic intrusive rocks. Our study shows that the continental crust in the eastern NCC thickened during the Late Jurassic (>40 km) due to compression and the westward subduction of the Palaeo-Pacific Ocean lithosphere beneath the NCC since the Early Jurassic. The continental crust further thickened during the Early Cretaceous, caused by the steepening of the subducting slab after ~144 Ma that produced crustal underplating of mantle-derived melts in an extensional setting. However, the continental crust thinned (20–40 km) during the latest Early Cretaceous, caused by the rollback of the subducting slab after ~123 Ma. The geochemical compositions of three stages of felsic intrusions also suggest that the regional tectonic stress that affects the eastern NCC altered from a compressional to an intraplate extensional environment after ~144 Ma. Thus, the Late Mesozoic destruction of the eastern NCC and its accompanying magmatism were controlled by prolonged thermomechanical-chemical erosion due to low-angle subduction, steepening, and rollback of the Palaeo-Pacific Oceanic lithosphere.

New materials of trichocerid and ptychopterid dipterans from the earliest Late Jurassic of Jiyuan Basin, China

2020 ◽  
Vol 3 (5) ◽  
pp. 461-465
Author(s):  
YU-MING LIU ◽  
DI-YING HUANG
Keyword(s):  
Early Cretaceous ◽  
Inner Mongolia ◽  
Late Jurassic ◽  
North China ◽  
Upper Jurassic ◽  
New Materials ◽  
Fossil Species ◽  
Small Family ◽  
Crane Flies

Trichoceridae, species of which are commonly known as winter crane flies, is a rather small family that includes 79 fossil species and ca. 160 extant ones (Krzemińska et al., 2009; Dong et al., 2014). Among them, 10 species have been described from the Middle-Upper Jurassic Haifanggou Formation at Daohugou, Ningcheng County, Inner Mongolia, North China (Zhang, 2006; Krzemińska et al., 2009; Liu et al., 2012; Dong et al., 2014). The subgenus Archaeotrichocera of Eotrichocera contains seven species, described mainly from the Middle–Late Jurassic Daohugou biota of China (Zhang, 2006; Krzemińska et al., 2009; Dong et al., 2014) with one species found from the Early Cretaceous of Kempendyay in Yakutia, Russia (Krzemińska et al., 2009).

scholarly journals Linking lithospheric thinning and magmatic evolution of late Jurassic to early cretaceous granitoids in the Jiaobei Terrane, southeastern North China Craton

Lithos ◽  
2019 ◽  
Vol 324-325 ◽  
pp. 280-296 ◽  
Author(s):  
Xing-Hui Li ◽  
Hong-Rui Fan ◽  
Fang-Fang Hu ◽  
Pete Hollings ◽  
Kui-Feng Yang ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
North China Craton ◽  
Late Jurassic ◽  
North China ◽  
Magmatic Evolution ◽  
Lithospheric Thinning

scholarly journals New Late Jurassic to Early Cretaceous Paleomagnetic Results From North China and Southern Mongolia and Their Implications for the Evolution of the Mongol-Okhotsk Suture

2018 ◽  
Vol 123 (12) ◽  
pp. 10,370-10,398 ◽  
Author(s):  
Qiang Ren ◽  
Shihong Zhang ◽  
Yuqi Wu ◽  
Tianshui Yang ◽  
Yangjun Gao ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
North China

Tectonic and climatic controls on the Late Jurassic‐Early Cretaceous stratigraphic architecture of the Xuanhua basin, North China

2021 ◽  
Author(s):  
Chengfa Lin ◽  
Shaofeng Liu ◽  
Cheng Tian ◽  
Qitian Zhuang ◽  
Ruiwei Li ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
North China ◽  
Stratigraphic Architecture

scholarly journals An intracontinental orogen exhumed by basement-slice imbrication in the Longmenshan Thrust Belt of the Eastern Tibetan Plateau

2021 ◽  
Author(s):  
Zhenhua Xue ◽  
Wei Lin ◽  
Yang Chu ◽  
Michel Faure ◽  
Yan Chen ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Late Jurassic ◽  
Amphibolite Facies ◽  
Metamorphic Rocks ◽  
Thrust Belt ◽  
Normal Faulting ◽  
Weak Zone ◽  
Detailed Structural Analysis ◽  
Longmenshan Thrust Belt ◽  
Eastern Tibet

The Longmenshan Thrust Belt in Eastern Tibet resulted from a Mesozoic orogeny and Cenozoic reworking. It is generally believed that the Cenozoic tectonics along the Longmenshan Thrust Belt are mostly inherited from the Mesozoic. Reconstructing the Mesozoic tectonics of the Longmenshan Thrust Belt is therefore important for understanding its evolutionary history. On the basis of detailed structural analysis, we recognized a Main Central Boundary that divides the Longmenshan Thrust Belt into a Southeastern Zone and a Northwestern Zone. Both zones underwent a main D1 event characterized by D1E top-to-the-SE thrusting in the Southeastern Zone and D1W top-to-the-NW/N thrusting in the Northwestern Zone. In the Southeastern Zone, a D2 top-to-the-NW/N normal faulting that cuts the D1E structures is developed along the NW boundary of the basement complexes. Newly obtained and previous geochronological data indicate that the D1E and D1W events occurred synchronously at ca. 224−219 Ma, and the D2 top-to-the-NW/N normal faulting was episodically activated at ca. 166−160 Ma, 141−120 Ma, 81−47 Ma, and 27−25 Ma. Episodic and synchronously activated top-to-the-NW normal faulting and top-to-the-SE thrusting along the northwestern and southeastern boundaries of the basement complexes, respectively, leads us to propose that the basement slices were episodically imbricated to the SE during the Late Jurassic−Early Cretaceous and Late Cretaceous−earliest Paleocene. The D1 amphibolite facies metamorphic rocks above the basement complexes recorded fast exhumation during the Late Jurassic−Early Cretaceous. We propose that the early Mesozoic northwestward basement underthrusting along a crustal “weak zone” was responsible for the D1 double-vergent thrusting and amphibolite facies metamorphism. Subsequent basement-slice imbrications reworked the Longmenshan Thrust Belt and exhumed the amphibolite facies rocks. Our results highlight the importance of basement underthrusting and imbrication in the formation and reworking of the intracontinental Longmenshan Thrust Belt in Eastern Tibet.

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