Olivine and melt inclusion chemical constraints on the source of intracontinental basalts from the eastern North China Craton: Discrimination of contributions from the subducted Pacific slab

Li, Hongyan; Xu, Yi–Gang; Ryan, Jeffrey G.; Huang, Xiaolong; Ren, Zhong‐Yuan; Guo, Hua; Ning, Zhenguo

doi:10.1016/j.gca.2015.12.032

Cited by 80 publications

(62 citation statements)

References 110 publications

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“…All these basalts show OIB-like trace element signatures, i.e. the enrichment of highly incompatible elements, enrichment of light rare earth elements (LREE) over heavy rare earth elements (HREE), and positive Nb-Ta anomalies on primitive mantle-normalized trace element variation plots (e.g., Zeng et al, 2010Zeng et al, , 2011Li et al, 2014Li et al, , 2016Kuritani et al, 2011).…”

Section: Geochemical Background and Samplesmentioning

confidence: 99%

“…The bulk rock major element, trace element and radiogenic Sr-Nd-Hf-Pb isotopes ( Fig. 2; Supplemental Figures) for these basalts have been discussed in detail by Zeng et al (2010, 2011), Xu et al (2012b, Sakuyama et al (2013) and Li et al (2016). All of the samples have minor olivine and clinopyroxene phenocrysts in a groundmass of olivine, plagioclase, clinopyroxene, Timagnetite, and glass.…”

Section: Geochemical Background and Samplesmentioning

confidence: 99%

“…In eastern China, Cenozoic intracontinental basalts occur primarily along its eastern continental margin, and their pattern of geographic distribution appears to be associated with that of the stagnant Pacific slab in the MTZ ( Fig. 1a; Xu et al, 2012a;Li et al, 2016). These observations suggest that eastern Eurasia is a potentially ideal place to study relationships between mantle heterogeneity, magama generation and materials released from deeply subducted oceanic plates (e.g.…”

Section: Introductionmentioning

confidence: 96%

“…In this model, the enriched components in these Cenozoic basalts are from the MTZ. A second model suggests that contributions from the subducted Pacific slab are related to melting of carbonated oceanic crust (Sakuyama et al, 2013;Li et al, 2016), and also emphasizes the contribution of pre-existing enriched ''plums" in the asthenospheric mantle (Li et al, 2016). The third competing model argues against a role of subducted Pacific slab materials in the MTZ in the generation of Cenozoic basalts in eastern China, postulating instead that the enriched component in these basalts arises from delaminated lower continental crust of the eastern North China Craton (NCC; e.g., Liu et al, 2008;Chen et al, 2009;Zeng et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…This paper reports new elemental and isotopic data for the strongly fluid mobile trace element (FME) boron (B) in a suite of Miocene-Quaternary basalts from western Shandong of the eastern NCC. In combination with published geochemical data on these rocks, we place new Li et al, 2016). Sample locations are marked in black triangles: ➀ Changwei depression; ➁ Dashan of Wudi.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Boron isotopes reveal multiple metasomatic events in the mantle beneath the eastern North China Craton

Zhou

Ryan

et al. 2016

Geochimica et Cosmochimica Acta

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Section: Geochemical Background and Samplesmentioning

confidence: 99%

Section: Geochemical Background and Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Boron isotopes reveal multiple metasomatic events in the mantle beneath the eastern North China Craton

Zhou

Ryan

et al. 2016

Geochimica et Cosmochimica Acta

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Evolution of the mantle beneath the eastern North China Craton during the Cenozoic: Linking geochemical and geophysical observations

Ryan

et al. 2017

JGR Solid Earth

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Recent discoveries related to the geochemistry of Cenozoic basalts and the geophysics of the deep mantle beneath eastern Eurasia make it possible to place constraints on the relationship between the seismic tomography of subcontinental mantle domains and their geochemical heterogeneities. Basalts with ocean island basalt‐like trace elements erupted during (56–23 Ma) and after (≤23 Ma) rifting of the eastern North China Craton (NCC) show evidence for the mixing of an isotopically depleted source and an EMI (Enriched mantle type I) pyroxenitic mantle. NCC rifting‐stage basalts exhibit anomalously low MgO and Fe2O3T and high SiO2 and Al2O3, as well as low Dy/Yb and Y/Yb and high εHf at a given εNd, as compared to the postrifting basalts. Temporal compositional variations and their association with basin subsidence indicate that heterogeneity in the eastern NCC asthenospheric mantle is the primary driver for intraplate magmatism in this region. The specific magmatic sources shifted in terms of depth, related to lithospheric thinning and thickening in the eastern NCC. The NCC EMI mantle domain most likely developed due to ancient events, is persistent through time, and is not related to dehydration of the stagnant Pacific slab in the mantle transition zone. Based on the chemical signatures of postrifting basalts, contributions from the Pacific slab are likely to be carbonatite rich. Mantle metasomatism by carbonatite melts from the Pacific slab and the interaction of these melts at shallower depths with EMI pyroxenitic mantle domains to trigger melting are contributors to the observed low P wave velocity zone beneath eastern Eurasia.

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Petrogenesis of basalt from the middle Okinawa Trough: New insights from olivine‐hosted melt inclusions

Zeng

Wang

et al. 2018

Geological Journal

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Silicate melt inclusions (SMIs) in basalt from the middle Okinawa Trough are investigated in detail to understand the source geochemical characteristics and petrogenesis of the basalt. The middle Okinawa Trough basalts contain abundant SMIs within olivine phenocrysts. The major element compositions of the SMIs are analysed using an electron microprobe. After correcting for olivine postentrapment crystallization, the major element compositions of the SMIs are more variable in terms of SiO2 (49.7–54.8 wt%) and MgO (5.1–7.2 wt%) than those of the host basalt (SiO2, 52.4 wt%; MgO, 5.7 wt%), which could indicate the existence of more primitive melts than erupted bulk rock. The major element compositions of the SMIs indicate that the SMI‐recorded melt evolution process was mainly dominated by the fractional crystallization of olivine. According to laser ablation inductively coupled mass spectrometer analyses, the trace element compositions of the SMIs are similar to those of the host bulk rock and feature obvious enrichment in Pb and large‐ion lithophile elements relative to high field strength elements, rare earth elements, and highly negative Nb and Ta anomalies. The low Ce/Pb ratios, high Pb contents, and trace element distribution patterns in the SMIs are related to contributions from subducted sedimentary components in the magma source. Based on the electron microprobe analyses, the chemical composition of the olivine suggests that the lithology of the basalt source may be pyroxenite. The basalts may have been generated by the partial melting of pyroxenite during interactions between mantle‐wedge peridotite and Si‐rich melts that were released from the subducted slab.

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Olivine and melt inclusion chemical constraints on the source of intracontinental basalts from the eastern North China Craton: Discrimination of contributions from the subducted Pacific slab

Cited by 80 publications

References 110 publications

Boron isotopes reveal multiple metasomatic events in the mantle beneath the eastern North China Craton

Boron isotopes reveal multiple metasomatic events in the mantle beneath the eastern North China Craton

Evolution of the mantle beneath the eastern North China Craton during the Cenozoic: Linking geochemical and geophysical observations

Petrogenesis of basalt from the middle Okinawa Trough: New insights from olivine‐hosted melt inclusions

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