Coexistence of the moderately refractory and fertile mantle beneath the eastern Central Asian Orogenic Belt

Pan, Shaokui; Zheng, Jianping; Chu, Linlin; Griffin, William L.

doi:10.1016/j.gr.2012.03.001

Cited by 32 publications

(18 citation statements)

References 100 publications

(149 reference statements)

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“…According to petrographical and geochemical classification, the ADB are subdivided into basanites, alkali basalts and tholeiitic basalts. The presence of peridotite and pyroxenite xenoliths in the ADB has been reported by previous studies (e.g., Deng and Macdougall, 1992;Pan et al, 2013;Zou et al, 2014).…”

Section: Petrographysupporting

confidence: 83%

“…The presence of mantle xenoliths in the ADB is very common (e.g., Pan et al, 2013;Zou et al, 2014;Y. Liu et al, 2015), suggesting rapid magma ascent process.…”

Section: Fractional Crystallization and Crustal Contaminationmentioning

confidence: 99%

“…Cenozoic intraplate basalts are widespread in eastern China, of which the geodynamic mechanism remains a matter of heated debate, such as continental roots-plume tectonics (Deng et al, 1992(Deng et al, , 2004, continental rifting (Liu et al, 2001), lithospheric thinning/delamination (Xu et al, 2005;Chu et al, 2013), asthenospheric upwelling (Basu et al, 1991;Zou et al, 2008) and mantle transition zone (MTZ)-derived hydrous plume (Kuritani et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Origin of Late Cenozoic Abaga–Dalinuoer basalts, eastern China: Implications for a mixed pyroxenite–peridotite source related with deep subduction of the Pacific slab

Zhang

Guo

2016

Gondwana Research

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Section: Petrographysupporting

confidence: 83%

“…The presence of mantle xenoliths in the ADB is very common (e.g., Pan et al, 2013;Zou et al, 2014;Y. Liu et al, 2015), suggesting rapid magma ascent process.…”

Section: Fractional Crystallization and Crustal Contaminationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Origin of Late Cenozoic Abaga–Dalinuoer basalts, eastern China: Implications for a mixed pyroxenite–peridotite source related with deep subduction of the Pacific slab

Zhang

Guo

2016

Gondwana Research

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“…Consequently, the widespread Late Mesozoic highly fractionated I‐type granites may be indeed generated by asthenospheric upwelling during this period. Pre‐existing moderately refractory lithospheric mantle beneath the eastern CAOB was strongly penetrated by upwelling asthenospheric material during this period (Pan et al ., ). And in the south part of the GXAR, the Mesozoic dyke‐swarms also suggest multi‐episodic asthenospheric upwelling beneath NE China (Shao et al ., ; Shao and Zhang, ).…”

Section: Discussionmentioning

confidence: 99%

Formation of the Jurassic Changboshan‐Xieniqishan highly fractionated I‐type granites, northeastern China: implication for the partial melting of juvenile crust induced by asthenospheric mantle upwelling

Zhang

Wei

et al. 2013

Geological Journal

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Zircon U–Pb ages, major and trace elements, and Sr, Nd and Hf isotope compositions of the Changboshan‐Xieniqishan (CX) intrusion from the Great Xing'an Range (GXAR), northeastern China, were studied to investigate its derivation, evolution and geodynamic significance. Laser ablation inductively coupled plasma mass spectrometry (LA‐ICP‐MS) zircon U–Pb dating yields an emplacement age of 161 ± 2 Ma for the CX intrusion. Bulk‐rock analyses show that this intrusion is characterized by high SiO2, Na2O and K2O, but low MgO, CaO and P2O5. They are enriched in large‐ion lithophile elements and light rare earth elements, with marked Eu anomalies (mostly from 0.36 to 0.65), and depleted in heavy rare earth elements and high field strength elements. Most samples have relatively low (87Sr/86Sr)i values (0.70423–0.70457), with εNd(t) fluctuating between −0.4 and 2.3. The εHf(t) for zircons varies from 5.4 to 8.7. Sr–Nd isotope modelling results, in combination with young Nd and Hf model ages (760–986 and 549–728 Ma, respectively) and the presence of relict zircons, indicate that the CX intrusion may originate from the partial melting of juvenile crust, with minor contamination of recycled crustal components, and then underwent extensive fractional crystallization of K‐feldspar, plagioclase, biotite, sphene, apatite, zircon and allanite. Considering the widespread presence of granitoids with coeval volcanic rocks, we contend that the CX intrusion formed in an extensional environment related to the upwelling of asthenospheric mantle induced by the subduction of the Palaeo‐Pacific plate, rather than a lithospheric delamination model. Copyright © 2013 John Wiley & Sons, Ltd.

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“…9a). This can result from the equilibrium between clinopyroxene and LREE-rich melts(Pan et al 2013). The high contents of Al 2 O 3 and TiO 2 and the enrichment of trace and rare earth elements in the rim of the phenocrystic clinopyroxene relative to the core suggest the changes in physical and chemical characteristics of the magma during ascent.…”

mentioning

confidence: 99%

Oligocene crustal xenolith‐bearing alkaline basalt from Jandaq area (Central Iran): implications for magma genesis and crustal nature

2014

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The Oligocene alkaline basalts of Toveireh area (southwest of Jandaq, Central Iran) exhibit northwest-southeast to west-east exposure in northwest of the central-east Iranian microcontinent (CEIM). These basalts are composed of olivine (Fo 70-90 ), clinopyroxene (diopside, augite), plagioclase (labradorite), spinel, and titanomagnetite as primary minerals and serpentine and zeolite as secondary ones. They are enriched in alkalis, TiO 2 and light rare earth elements (La/Yb = 9.64-12.68) and are characterized by enrichment in large ion lithophile elements (Cs, Rb, Ba) and high field strength elements (Nb, Ta). The geochemical features of the rocks suggest that the Toveireh alkaline basalts are derived from a moderate degree partial melting (10-20%) of a previously enriched garnet lherzolite of asthenospheric mantle. Subduction of the CEIM confining oceanic crust from the Triassic to Eocene is the reason of mantle enrichment. The studied basalts contain mafic-ultramafic and aluminous granulitic xenoliths. The rock-forming minerals of the mafic-ultramafic xenoliths are Cr-free/poor spinel, olivine, Al-rich pyroxene, and feldspar. The aluminous granulitic xenoliths consist of an assemblage of hercynitic spinel + plagioclase (andesine-labradorite) ± corundum ± sillimanite. They show interstitial texture, which is consistent with granulite facies. They are enriched in high field strength elements (Ti, Nb and Ta), light rare earth elements (La/Yb = 37-193) and exhibit a positive Eu anomaly. These granulitic xenoliths may be Al-saturated but Siundersaturated feldspar bearing restitic materials of the lower crust. The Oligocene Toveireh basaltic magma passed and entrained these xenoliths from the lower crust to the surface.

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Coexistence of the moderately refractory and fertile mantle beneath the eastern Central Asian Orogenic Belt

Cited by 32 publications

References 100 publications

Origin of Late Cenozoic Abaga–Dalinuoer basalts, eastern China: Implications for a mixed pyroxenite–peridotite source related with deep subduction of the Pacific slab

Origin of Late Cenozoic Abaga–Dalinuoer basalts, eastern China: Implications for a mixed pyroxenite–peridotite source related with deep subduction of the Pacific slab

Formation of the Jurassic Changboshan‐Xieniqishan highly fractionated I‐type granites, northeastern China: implication for the partial melting of juvenile crust induced by asthenospheric mantle upwelling

Oligocene crustal xenolith‐bearing alkaline basalt from Jandaq area (Central Iran): implications for magma genesis and crustal nature

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