Phanerozoic Evolution of Lithospheric Structures of the North China Craton

Xu, Yixian; Zhang, Yi; Yang, Bo; Bao, Xuewei

doi:10.1029/2022gl098341

Cited by 7 publications

(5 citation statements)

References 52 publications

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“…15,98,[145][146][147][148][149][150][151][152][153][154][155][156] It also resulted in destruction of the NCC in the Early Cretaceous, with major magmatism and gold mineralization as part of the Yanshanian Movement. [4][5][6][7][8]10,11,13,20,157,158 These are again, very different from geologic evolutions of the southeastern China and the LYRB, suggesting that the plate subduction beneath the NCC was different from that underneath southeastern China, in terms of age and subduction directions.…”

Section: Late Mesozoic Geologic Events In Eastern Chinamentioning

confidence: 89%

“…It is generally well accepted that the drifting and subduction of the Pacific and the Izanagi (also known as Paleo-Pacific) plates have controlled the major tectonic events in the East Asian continent since the Jurassic, e.g., the Yanshanian Movement, the destruction of the North China Craton (NCC) and large scale mineralization. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] However, the reconstruction of the Pacific plate motion is controversial. 16,17,21,22 A currently well accepted reconstruction scheme of the Pacific plate 21,23 cannot explain the completely different geologic evolution in the South and the North China Blocks and the Yangtze River Belt in the Late Jurassic and the Early Cretaceous.…”

Section: Introductionmentioning

confidence: 99%

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Reconstruction of the Pacific plate: Constraints from ocean floor and eastern China

Sun¹,

Li²

2023

TIG

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<p>Magnetic anomalies show that the Pacific plate rotated counterclockwise by ~50��, induced by the eruption of the Ontong Java Plateau at ~125 Ma. Meanwhile, the drifting direction of the Pacific plate also changed from southwestward (~265��) to northwestward (~300��). The rotation promoted the destruction of the North China Craton (NCC) and induced slab rollback, which was responsible for the Cretaceous large-scale magmatism and mineralization in eastern China. Correspondingly, the orientation of the spreading ridge between the Pacific and Izanagi plates has also changed, which was originally towards ~290�� before 125 Ma. Such a configuration is consistent with Late Mesozoic geologic events in eastern China. The spatiotemporal distribution of magmatic rocks and ore deposits suggests that the Pacific plate began to subduct southwestward underneath southeastern China in the Early Jurassic (��175 Ma), and reached the Nanling Mountains. In contrast, the Izanagi Plate was still connected to the NCC before ~170 Ma. Its northwestward drift before/during subduction initiation resulted in compression that wedged the NCC into the East Asian continent and resulted in fold belts in three directions in weak zones surrounding the NCC and strike-slip faults along the south and the north margins (known as Event A of the Yanshanian Movement [165-170 Ma]). This is followed by extension during slab rollback. The Izanagi plate rotated clockwise by ~50�� between 149.35 Ma and 140.42 Ma, which was coincident with commencement of Event B of the Yanshanian Movement, both of which resulted from the collision between a micro-continent on the Izanagi plate and eastern China.</p>

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Section: Late Mesozoic Geologic Events In Eastern Chinamentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Reconstruction of the Pacific plate: Constraints from ocean floor and eastern China

Sun¹,

Li²

2023

TIG

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“…However, studies indicate that the lithospheric mantle beneath the eastern NCC is highly heterogeneous (Xu et al., 2022; Zheng et al., 2021). Therefore, it is reasonable to believe that the lithospheric mantle modification of cratons is the result of multiple mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Imaging a Decratonized Lithosphere: A Case of the Eastern North China Craton

Huang

Gao

et al. 2022

Geophysical Research Letters

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The word craton (old kratogen) introduced by Leopold Kober in 1936 indicates interior parts of the continent that are strong and stable. Nowadays cratons are considered ancient stable lithospheric tectonic units that are generally devoid of Phanerozoic magmatic processes, tectonic deformations, and earthquakes (Sengor, 1999). Nevertheless, growing studies have documented that some cratons considered to be stable have experienced episodic rejuvenation events throughout their history (Holdsworth et al., 2001;Lee et al., 2011;Wu et al., 2019). Therefore, rejuvenation of cratons could be considered to be a regular process. Then the rejuvenation of cratons and its associated processes, most probably, play an important role in continental evolution. Imaging and characterizing this process would result in singular new knowledge which contributes to the understanding of the formation and evolution of Earth. The rejuvenation of the cratons (the stable and strong core of the continents) involves: thinning of the lithosphere; increase in crustal and upper mantle temperature gradient; magmatic intrusions; changes in the composition; and, also, tectonic deformation (

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“…However, recent studies suggest that the WB also experienced differential thickening or thinning in the lithosphere during the Phanerozoic (Qi et al., 2020; Y.‐X. Xu et al., 2022). Thus, the WB can be considered as a less typical Archean craton.…”

Section: Lower Crustal Compositions In Type Sections and North China ...mentioning

confidence: 99%

Geophysical‐Geochemical Modeling of Deep Crustal Compositions: Examples of Continental Crust in Typical Tectonic Settings and North China Craton

et al. 2023

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The chemical composition of the deep continental crust is key to understanding the formation and evolution of the continental crust. Constraining the chemical composition of present‐day deep continental crust is, however, limited by indirect accessibility. This paper presents a modeling method for constraining deep crustal chemical structures from observed crustal seismic structures. We compiled a set of published composition models for the continental crust to construct functional relationships between seismic wave speed and major oxide content in the crust. Phase equilibria and compressional wave speeds (VP) for each composition model were calculated over a range of depths and temperatures of the deep crust. For conditions within the alpha(α)‐quartz stability field, robust functional relationships were obtained between VP and major oxide contents of the crust. Based on these relationships, observed VP of the deep crust can be inverted to chemical compositions for regions with given geotherms. We provide a MATLAB code for this process (CalcCrustComp). We apply this method to constrain compositions from deep crustal VP of global typical tectonic settings and the North China Craton (NCC). Our modeling results suggest that the lower crust in subduction‐related and rifting‐related tectonic settings may be more mafic than platforms/shields and orogens. The low VP signature in the deep crust of the NCC can be explained by intermediate crustal compositions, higher water contents, and/or higher temperatures. The chemical structure obtained by this method can serve as a reference model to further identify deep crustal features.

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Phanerozoic Evolution of Lithospheric Structures of the North China Craton

Cited by 7 publications

References 52 publications

Reconstruction of the Pacific plate: Constraints from ocean floor and eastern China

Reconstruction of the Pacific plate: Constraints from ocean floor and eastern China

Imaging a Decratonized Lithosphere: A Case of the Eastern North China Craton

Geophysical‐Geochemical Modeling of Deep Crustal Compositions: Examples of Continental Crust in Typical Tectonic Settings and North China Craton

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