Tectonics of the North Qilian orogen, NW China

Song, Shuguang; Niu, Yaoling; Su, Li; Xia, Xiaohong

doi:10.1016/j.gr.2012.02.004

Cited by 585 publications

(619 citation statements)

References 93 publications

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“…The main requirement for the generation of these large volume felsic melts is that their protoliths are hydrous (e.g., Bryan et al, 2002), which is consistent with the fact that reported Phanerozoic SLIPs are all restricted to continental margins that acquire fertile, hydrous lower-crustal materials by long-lived subduction (e.g., Bryan and Ferrari, 2013;Bryan et al, 2002). Although there is no contemporaneous subduction around the Alxa silicic igneous province, the hydrous lowercrust would have been created by Paleo-subduction in the southern (e.g., Song et al, 2013), eastern (Dan et al, 2013) and northern (Zheng et al, 2013) part of the Alxa Block.…”

Section: Bijiertai Complexsupporting

confidence: 71%

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

Wei

Wang

et al. 2014

Lithos

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Section: Bijiertai Complexsupporting

confidence: 71%

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

Wei

Wang

et al. 2014

Lithos

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“…The Jinfosi batholith is ~ 60 km long and 10-12 km wide, extending in NW-direction in the northwestern part of the NQOB (Fig. 1, Song et al, 2013). The batholith intruded the Ordovician back-arc basin volcanic complex and the Silurian sedimentary sequence.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…The Mohe gneiss within the NQ-UHPM is the oldest sampled crystalline basement in the QOB, dated at ~ 2.5 Ga , and the inherited zircons with ages >2.6 Ga confirm the existence of an Archean basement in the region (Huang et al, 2015;. Different models have been proposed to explain the tectonic evolution in the whole QOB (Xu et al, 1994;Yin and Harrison, 2000;Yang et al, 2002;Gehrels et al, 2003Gehrels et al, , 2011Song et al, 2006Song et al, , 2013Song et al, , 2014Wu et al, 2006Wu et al, , 2010Xu Z. Q, 2006;Xiao et al, 2009;Huang et al, 2015). The…”

Section: Geological Backgroundmentioning

confidence: 99%

“…5 most recent comprehensive studies suggest that the NQOB, QB and NQ-UHPM are different products corresponding to one convergence event, during which the subduction was initiated at ~520 Ma, the ocean basin was closed at 440 Ma, exhumation happened around ~ 420-400 Ma and final orogen collapsed at ~360 Ma (Song et al, 2006(Song et al, , 2009(Song et al, , 2013Wang et al, 2014). In this model, the NQOB is considered to be an oceanic suture zone, the QB represents an imbricate thrust belt, and the NQ-UHPM represents a continental-type subduction zone.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

“…The Jinfosi batholith is one of the largest batholiths in the NQOB, considered as typical products of intra-crustal differentiation in a syn/post-collisional setting (Hu et al, 2006;Zhang et al, 1995;Wu et al, 2010;Song et al, 2013 (Wang et al, 2005;Chen et al, 2014), generally coupled with the subduction-related HP metamorphic activities (489-440 Ma) (Wu et al, 1993;Zhang et al, 1997Song et al, 2004Song et al, , 2006Liu et al, 2006). The Jinfosi batholith is ~ 60 km long and 10-12 km wide, extending in NW-direction in the northwestern part of the NQOB (Fig.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

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Garnet effect on Nd-Hf isotope decoupling: Evidence from the Jinfosi batholith, Northern Tibetan Plateau

Huang

Niu

2017

Lithos

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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-pro t 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. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

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Ophiolites in the Xing'an-Inner Mongolia accretionary belt of the CAOB: Implications for two cycles of seafloor spreading and accretionary orogenic events

et al. 2015

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(2015) 'Ophiolites in the Xing'an-Inner Mongolia accretionary belt of the CAOB : implications for two cycles of sea oor spreading and accretionary orogenic events. ', Tectonics., 34 (10). pp. 2221-2248. Further information on publisher's website: 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-pro t 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. Abstract The Xing'an-Inner Mongolia accretionary belt in the southeastern segment of the Central Asian Orogenic Belt (CAOB) was produced by the long-lived subduction and eventual closure of the Paleo-Asian Ocean and by the convergence between the North China Craton and the Mongolian microcontinent. Two ophiolite belts have been recognized: the northern Erenhot-Hegenshan-Xi-Ujimqin ophiolite belt and the southern Solonker-Linxi ophiolite belt. Most basalts in the northern ophiolite belt exhibit characteristics of normal-type to enriched-type mid-ocean ridge basalt affinities with depleted Nd isotopic composition (ε Nd (t) > +5), comparable to modern Eastern Pacific mid-ocean ridge basalts. Most basaltic rocks in the southern belt show clear geochemical features of suprasubduction zone-type oceanic crust, probably formed in an arc/back-arc environment. The inferred back-arc extension along the Solonker-Linxi belt started at circa 280 Ma. Statistics of all the available age data for the ophiolites indicates two cycles of seafloor spreading/subduction, which gave rise to two main epochs of magmatic activity at 500-410 Ma and 360-220 Ma, respectively, with a gap of~50 million years (Myr). The spatial and temporal distribution of the ophiolites and concurrent igneous rocks favor bilateral subduction toward the two continental margins in the convergence history, with final collision at~230-220 Ma. In the whole belt, signals of continental collision and Himalayan-style mountain building are lacking. We thus conclude that the Xing'an-Inner Mongolia segment of the CAOB experienced two cycles of seafloor subduction, back-arc extension, and final "Appalachian-type" soft collision.

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Tectonics of the North Qilian orogen, NW China

Cited by 585 publications

References 93 publications

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

An Early Permian (ca. 280Ma) silicic igneous province in the Alxa Block, NW China: A magmatic flare-up triggered by a mantle-plume?

Garnet effect on Nd-Hf isotope decoupling: Evidence from the Jinfosi batholith, Northern Tibetan Plateau

Ophiolites in the Xing'an-Inner Mongolia accretionary belt of the CAOB: Implications for two cycles of seafloor spreading and accretionary orogenic events

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