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 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
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