Destruction geodynamics of the North China craton and its Paleoproterozoic plate tectonics

Zhu, Rixiang; Zheng, Tianyu

doi:10.1007/s11434-009-0451-5

Cited by 186 publications

(114 citation statements)

References 37 publications

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“…The lithosphere of the Eastern Block is in destruction mode and is thinned overall, while the Western Block basically remains stable. As for the Central Block, the lithospheric thickness increases from east to west, suggesting cratonic destruction is exacerbated in this direction [7]. This also is consistent with subduction and dehydration of the stagnant slab of the Pacific Plate, which could result in the increase of melting and fluid in the mantle, and induce upwelling of hot mantle materials [7,[39][40][41].…”

Section: Spatial Variation Of Cratonic Destruction and The Discrepancsupporting

confidence: 60%

“…This also may be the reason for the thickened crust-mantle transition zone and significant low velocity anomaly in the uppermost mantle beneath the Tanlu Fault Zone. Cratonic destruction in this area may be largely attributed to protracted thermal erosion and underplating [7,12,32]. This also suggests that the lithospheric weak zone plays an important role in cratonic destruction of the NCC.…”

Section: Eastern Block Of the Nccmentioning

confidence: 88%

“…As the region with the thinnest lithospheric mantle (60-70 km), the Tanlu Fault Zone has slow velocity layers in the crust [5,7,[31][32][33]. Previous studies show that the Tanlu Fault Zone has cut through the crust and reaches to the lithospheric mantle.…”

Section: Eastern Block Of the Nccmentioning

confidence: 99%

“…Although lithospheric thinning and modification of lithospheric properties and thermal state have been characterized by many geochemical and geophysical studies, the dynamic mechanism of cratonic destruction still is widely disputed. Thermal-chemical erosion and delamination are two contrasting hypotheses for NCC destruction [1][2][3]6,7]. The delamination hypothesis states that the lower crust and upper mantle were laterally foundered into the asthenosphere due to gravity instability.…”

mentioning

confidence: 99%

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Uppermost mantle structure of the North China Craton: Constraints from interstation Pn travel time difference tomography

Hao

2011

Chin. Sci. Bull.

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Section: Spatial Variation Of Cratonic Destruction and The Discrepancsupporting

confidence: 60%

Section: Eastern Block Of the Nccmentioning

confidence: 88%

Section: Eastern Block Of the Nccmentioning

confidence: 99%

mentioning

confidence: 99%

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Uppermost mantle structure of the North China Craton: Constraints from interstation Pn travel time difference tomography

Hao

2011

Chin. Sci. Bull.

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“…Essential information, such as the pattern, accurate timing and controlling factors of the dynamics for the destruction of the North China Craton have been discussed among Earth scientists, yielding different perspectives, including the potential for delamination [6][7][8][9][10][11][12][13][14][15][16][17][18][19], thermomechanical-chemical and subduction erosion [20][21][22][23][24][25][26][27][28][29][30][31][32][33], peridotite-melt reactions [34][35][36][37][38][39], and lithospheric mantle weakening by hydration [40]. A recent geophysical investigation [41], combined with petrology and geochemistry data, further demonstrate the main dynamic process for destruction of the North China Craton as follows: Subduction of the Mesozoic Pacific Plate caused the mantle underneath the eastern Asian continent to become unstable and flow faster. Thus, subduction may have released melt/fluids into the upper mantle and led to lithospheric softening, which subsequently resulted in lithospheric destruction of the North China Craton.…”

mentioning

confidence: 99%

Adakitic rocks and destruction of the North China Craton: Evidence from experimental petrology and geochemistry

Xiong

Liu

Zhu

et al. 2011

Sci. China Earth Sci.

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The general temporal-spatial consistency for the formation of adakitic rocks and lithospheric thinning in northern China provide a window to examine the processes and mechanism for the destruction of the North China Craton. With experimental petrology data, this paper demonstrates that the adakitic rocks in northern China are the products of partial melting of middle-to high-potassic metabasalts at the base of the lower continent crust. Based on the TiO 2 solubility model, many adakitic rocks in Dabie, Jiaodong and the northern part of the craton appear to have been saturated with TiO 2 . This indicates the presence of a Ti-rich accessory phase in their source regions. This phase must be rutile based on the decreasing Nb/La with increasing La/Yb in the adakitic rocks. The adakitic magmas were, thus, derived from a depth of more than 50 km, based on pressures (higher than 1.5 GPa) for the stability of rutile in a metabasalt system. Because present-day crustal thickness is generally only 35 km, we suggest that the destruction of the North China Craton may have led to at least 15 km of thinning or delamination of the crust.

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Numerical modeling of convective erosion and peridotite‐melt interaction in big mantle wedge: Implications for the destruction of the North China Craton

2014

JGR Solid Earth

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The deep subduction of the Pacific Plate underneath East Asia is thought to have played a key role in the destruction of the North China Craton (NCC). To test this hypothesis, this paper presents a new 2-D model that includes an initial stable equilibrated craton, the formation of a big mantle wedge (BMW), and erosion by vigorous mantle convection. The model shows that subduction alone cannot thin the cold solid craton, but it can form a low-viscosity BMW. The amount of convective erosion is directly proportional to viscosity within the BMW (η 0bmw ), and the rheological boundary layer thins linearly with decreasing log 10 (η 0bmw ), thereby contributing to an increase in heat flow at the lithospheric base. This model also differs from previous modeling in that the increase in heat flow decays linearly with t 1/2 , meaning that the overall thinning closely follows a natural log relationship over time. Nevertheless, convection alone can only cause a limited thinning due to a minor increase in basal heat flow. The lowering of melting temperature by peridotite-melt interaction can accelerate thinning during the early stages of this convection. The two combined actions can thin the craton significantly over tens of Myr. This modeling, combined with magmatism and heat flow data, indicates that the NCC evolution has involved four distinct stages: modification in the Jurassic by Pacific Plate subduction and BMW formation, destruction during the Early Cretaceous under combined convective erosion and peridotite-melt interaction, extension in the Late Cretaceous, and cooling since the late Cenozoic.

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Destruction geodynamics of the North China craton and its Paleoproterozoic plate tectonics

Cited by 186 publications

References 37 publications

Uppermost mantle structure of the North China Craton: Constraints from interstation Pn travel time difference tomography

Uppermost mantle structure of the North China Craton: Constraints from interstation Pn travel time difference tomography

Adakitic rocks and destruction of the North China Craton: Evidence from experimental petrology and geochemistry

Numerical modeling of convective erosion and peridotite‐melt interaction in big mantle wedge: Implications for the destruction of the North China Craton

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