Destruction of the North China Craton

Zhu, Rixiang; Xu, Yi–Gang; Zhu, Guang; Zhang, Hongfu; Xia, Qunke; Zheng, Tianyu

doi:10.1007/s11430-012-4516-y

Cited by 531 publications

(387 citation statements)

References 135 publications

Supporting

Mentioning

371

Contrasting

Unclassified

Order By: Relevance

“…However, many consider that the NCC is not a typical craton because of its widespread tectonomagmatic activities since the Mesozoic (Wong 1929;Chen 1960;Deng 1988;Menzies et al 1993). It is widely accepted that these activities are associated with the removal of the lithospheric root or lithosphere thinning (e.g., Deng et al 1998Deng et al , 2004Deng et al , 2007Griffin et al 1998;Fan et al 2000;Xu 2001;Gao et al 1998Gao et al , 2002Gao et al , 2004Menzies et al 2007;Zhu et al 2012) by means of delamination (e.g., Deng et al 1998Deng et al , 2007Gao et al 2002Gao et al , 2004Liu et al 2008), thermal and chemical erosion (Menzies et al 1993;Deng et al 1998;Griffin et al 1998;Xu 2001;Zhang et al 2012), and basal hydration weakening that Figs. 8 and 9) of the western Pacific subduction zones.…”

Section: Geodynamic Significance Of the Mantle Transition-zone Slab Bmentioning

confidence: 99%

Geological understanding of plate tectonics: Basic concepts, illustrations, examples and new perspectives

Niu¹

2018

gtm

120

View full text Add to dashboard Cite

Publisher's copyright statement:This article is available under CC-BY-NC Creative Commons Attribution Non-Commercial Licence, which permits users to use, reproduce, disseminate or display the article provided that the author is attributed as the original creator and that the reuse is restricted to non-commercial purposes i.e. research or educational use. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. With 16 figuresAbstract: In this paper, I have reviewed some basic concepts of the plate tectonics theory in a plain geological language with the aim of encouraging geologists to correctly understand this theory in its applications to geological problems. I emphasized the decisive role of subduction as the ultimate (dominant) driving force of all the plate tectonics phenomena. Hence, my discussion has focused on major issues such as the origin of subduction zones, slab rollback, trench retreat, trench suction and driving mechanism of plate motion (both oceanic and continental) by means of illustration with hypothetical and real examples. As much of the discussion is heavily based on my personal (original) perspectives, some of the concepts, interpretations and hypotheses may not be familiar to many and may not be readily found in the existing literature. Mantle plume hypothesis is not the focus of this paper and is thus only mentioned in passing.

show abstract

Section: Geodynamic Significance Of the Mantle Transition-zone Slab Bmentioning

confidence: 99%

Geological understanding of plate tectonics: Basic concepts, illustrations, examples and new perspectives

Niu¹

2018

gtm

120

View full text Add to dashboard Cite

show abstract

“…Therefore, we propose that destruction of the NCC was caused by erosion, replacement, modification or partial melting associated with the hydration of the lithosphere. A large amount of water was probably added to the lithospheric mantle during the multiple episodes of subduction that occurred around the eastern NCC since the early Paleozoic (Windley et al, 2010;Xia et al, 2013;Kusky et al, 2014), and especially the rapid, deep subduction of the paleo-Pacific (Izanaghi) plate underneath East Asia (Niu, 2005;Zhao et al, 2007;Xu et al, 2012;Zhu et al, 2012c;He, 2014;Xu, 2014). Rollback of the subducted paleo-Pacific slab during the early Cretaceous (Zhu et al, 2012a;Kusky et al, 2014) induced upwelling of the asthenosphere and vigorous convection, which could erode already refertilized lithospheric mantle within the mantle wedge (He, 2014), in association with widespread magmatism (e.g.…”

Section: Geodynamic Implications Destruction Of the North China Cratonmentioning

confidence: 99%

Coexisting Early Cretaceous High-Mg Andesites and Adakitic Rocks in the North China Craton: the Role of Water in Intraplate Magmatism and Cratonic Destruction

Zheng

et al. 2016

J. Petrology

View full text Add to dashboard Cite

High-Mg andesites (HMAs) and adakitic rocks are purported to occur exclusively in subduction zones in the modern Earth. In the North China Craton, early Cretaceous HMAs and adakitic dacites were erupted in a continental setting, apparently unrelated to subduction given their location distal (>1000 km) to the trench at that time. Here we report petrological, mineralogical and geochemical data for these rocks with the aim of constraining their petrogenesis and elucidating the role of water in intraplate magmatism and cratonic destruction. The HMAs can be subdivided into olivine (Ol-)HMAs and clinopyroxene (Cpx-)HMAs. The former have high MgO (>9Á8 wt %) and Mg# (>71), with rare high-Fo (up to 91) olivine phenocrysts, corresponding to (near-)primary magmas that equilibrated with mantle peridotite. The latter have moderate MgO (7Á8-8Á8 wt %) and Mg# (mostly <70) and low-Fo (mostly < 83) olivine phenocrysts. The Cpx-HMAs are interpreted as magmas differentiated from the Ol-HMAs by olivine-dominated fractionation at lower-crust levels. P-T-X H2O estimations show that the primary HMAs are melts of shallow (1Á1-1Á2 GPa), hot ($1250 C) and wet (H 2 O > 3 wt %) lithospheric mantle. The coexisting adakitic dacites are hydrous (H 2 O ! 5 wt %) magmas with high SiO 2 (>63 wt %), Sr/Y ratios (!39) and Yb SN (source-normalized), low (Sm/Yb) SN , and negligible Eu anomalies. They also have unradiogenic whole-rock Nd [e Nd (t) ¼ -19 to -9] and zircon Hf [e Hf (t) ¼ -23 to -21] isotopic compositions consistent with derivation by melting of ancient lower crust at depths < 40 km. Melting may have been induced by heating and addition of H 2 O from underplated HMAs. Mixing between Cpx-HMAs and low-Mg adakitic dacites in magma chambers produced high-Mg adakitic rocks. The petrogenetic model presented here explains the occurrence of intraplate HMAs and adakitic magmas elsewhere in the North China Craton. The P-T-X H2O conditions inferred for HMA generation imply that the subcontinental lithospheric mantle beneath the craton was hot and hydrous in the early Cretaceous, which may have triggered the destruction of the cratonic root. The occurrence of young HMAs and adakitic rocks in an intraplate extensional environment also casts doubts on the common use of a similar igneous rock association as an indicator of subduction processes in Archean time.

show abstract

“…Multiple subduction cycles took place around the NCC in the Phanerozoic (Windley et al, 2010), including the Paleozoic southward subduction of the Paleo-Asian oceanic plate, the Triassic deep subduction of Yangtze continental crust and the Mesozoic-Cenozoic (and ongoing) subduction of the (Paleo-) Pacific plate. Meanwhile, the eastern part of this craton lost its lithospheric keel (N 100 km) in the Mesozoic and Cenozoic, and represents the best known example of craton-root destruction (Carlson et al, 2005;Griffin et al, 1998;Menzies et al, 1993;Xu, 2001;Zheng et al, 2007;Zhu et al, 2012).…”

Section: Geological Settingmentioning

confidence: 99%

High-Mg adakitic rocks and their complementary cumulates formed by crystal fractionation of hydrous mafic magmas in a continental crustal magma chamber

Zheng

et al. 2016

Lithos

View full text Add to dashboard Cite

Destruction of the North China Craton

Cited by 531 publications

References 135 publications

Geological understanding of plate tectonics: Basic concepts, illustrations, examples and new perspectives

Geological understanding of plate tectonics: Basic concepts, illustrations, examples and new perspectives

Coexisting Early Cretaceous High-Mg Andesites and Adakitic Rocks in the North China Craton: the Role of Water in Intraplate Magmatism and Cratonic Destruction

High-Mg adakitic rocks and their complementary cumulates formed by crystal fractionation of hydrous mafic magmas in a continental crustal magma chamber

Contact Info

Product

Resources

About