Chemical and Pb isotope composition of olivine-hosted melt inclusions from the Hannuoba basalts, North China Craton: Implications for petrogenesis and mantle source

Qian, S. J.; Ren, Zhong‐Yuan; Zhang, Le; Hong, Lu-Bing; Liu, Jianqiang

doi:10.1016/j.chemgeo.2015.02.018

Cited by 51 publications

(42 citation statements)

References 109 publications

(185 reference statements)

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“…16b), suggesting an iron-rich mantle source. Based on literature data (e.g., Hong et al, 2013;Qian et al, 2015), we note that olivines with low maximum Fo (<85) and low Ni (<3000 ppm) are common in Cenozoic sodic basalts from eastern China (Fig. 16b).…”

Section: Given No Systematic Variations In Whole-rock Compositions Ofmentioning

confidence: 94%

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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Section: Given No Systematic Variations In Whole-rock Compositions Ofmentioning

confidence: 94%

“…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%

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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“…Plots of δ 26 Mg versus selected element ratios for the Huihe nephelinites. Cenozoic Low δ 26 Mg sodic basalts from eastern China (gray diamonds) and Chaihe basalts are shown for comparison (Huang, Li, et al, ; Huang & Xiao, ; Li et al, ; Qian et al, ; Su et al, ; Sun, Teng, et al, ; Tang et al, ; Wei, ; Xue et al, ; Yang et al, ; Yang et al, ). Yellow dots represent new measured δ 26 Mg values of Chaihe samples in this study.…”

Section: Whole‐rock Compositions Of the Huihe Nephelinitesmentioning

confidence: 99%

“…These volcanic rocks are generally interpreted to represent melts generated in the asthenosphere because they have ocean island basalt‐type elemental signatures, for example, they show enrichment in Nb and Ta and depletion in K and Pb relative to light rare earth elements (LREEs; e.g., Liu, ; Zhou & Armstrong, ; Zou et al, ; Chen et al, ; Zeng et al, ). Low Ca and high Ni contents of their olivine phenocrysts (e.g., Hong et al, ; Li, Xu, et al, ; Liu, Ren, et al, ; Qian et al, ; Wang et al, ; Xu et al, ), high whole‐rock FC3MS values (here FC3MS = FeO/CaO – 3 * MgO/SiO 2 ; >0.65; Yang & Zhou, ; Yang et al, ), and high Fe/Mn (>60) and high 10,000 * Zn/Fe (>14) ratios (Liu et al, ; Xu et al, ; Zhang et al, ) suggest that these basalts (sensu lato) have pyroxenitic/eclogitic mantle sources. The distinct δ 18 O values of phenocrysts relative to typical mantle indicate that such pyroxenitic/eclogitic components may derive from subducted oceanic crusts and sediments (e.g., Liu, Xia, Deloule, et al, , Liu, Xia, Ingrin, et al, ; Liu, Wang, et al, ; Xu et al, ).…”

Section: Introductionmentioning

confidence: 99%

Light Mg Isotopic Composition in the Mantle Beyond the Big Mantle Wedge Beneath eastern Asia

Chen

Shi

et al. 2019

JGR Solid Earth

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Low‐δ26Mg basalts are commonly interpreted to represent melts derived from carbonated mantle sources. The mantle domain feeding low‐δ26Mg Cenozoic basalts in eastern China overlaps the so‐called Big Mantle Wedge (BMW) above the stagnant Pacific slab in the mantle transition zone, which indicates that the BMW is an important carbon reservoir generated by the slab. However, Mg isotopic composition in the nearby mantle beyond the BMW and, thus, the spatial extent of carbonated components in the mantle beneath eastern Asia have not yet been extensively characterized. Therefore, it remains largely unconstrained if additional or alternative carbon reservoirs exist. Here we carried out a geochemical study on Cenozoic Huihe nephelinites, which crop out ~500 km west of the present‐day BMW. These rocks are characterized by negative K, Zr, Hf, and Ti anomalies, high Zr/Hf, Ca/Al ratios, and low δ26Mg values, which suggest that they are derived from a carbonated mantle source. The composition of the nephelinites demonstrates that low δ26Mg mantle components exist at significant distances from the present‐day BMW, which highlights that in addition to the stagnant Pacific slab, other oceanic slab(s) also contribute(s) carbonate‐bearing crustal materials to the mantle sources of Cenozoic volcanism in eastern Asia.

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“…Previously published Sr  Nd isotopic data (cross) for the basalts in southern Baikal, central Mongolia, and NE China are also plotted for comparison. Data sources are from Basu et al (), Zhang, Suddaby, Thompson, Thirlwall, and Menzies (), Rasskazov et al (), Barry et al (), Yarmolyuk et al (), Zou et al (), Tang et al (), Ho, Liu, Chen, and Yang (); Ho, Liu, Chen, You, and Yang (), Chen, Zhang, Graham, Su, and Deng (), Kuritani et al (), Xu et al (), Zhang, Zhang, Fan, Han, and Zhou (), Tsypukova et al (), Zhang et al (), Yarmolyuk et al (), Chen, Fan, Zou, Zhao, and Shi (), Qian, Ren, Zhang, Hong, and Liu (), Guo et al (), and Zhang and Guo (). Reference fields for DM (depleted mantle), EM1 and EM2 (enriched mantle), MORB (mid‐ocean range basalt) and OIB (oceanic island basalt) are from Stracke, Bizimis, and Salters () and Stracke, Hofmann, and Hart () [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

Major, trace element, and SrNd isotopic geochemistry of Cenozoic basalts in Central‐North and East Mongolia: Petrogenesis and tectonic implication

et al. 2018

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This paper presents new major element, trace element, and SrNd isotope data of Cenozoic basalts in volcanic provinces Hovsgol, Taatsiin Gol, and Dariganga‐Abaga in Northern, Central, and Eastern Mongolia, respectively, to explore the petrogenesis of the basalts and their geodynamic setting. Cenozoic volcanic rocks in Mongolia are dominated by basalts, belonging to alkaline and tholeiitic series, and are characterized by ocean island basalts (OIB)‐like major and trace element signature, such as enrichment of light REE relative to heavy REE and enrichment in both large‐ion lithophile elements (LILE) and high‐field‐strength elements (HFSE) with positive NbTa anomalies in primitive mantle‐normalized spider diagram. On the other hand, the Central‐North Mongolian basalts are higher in SiO2 and Al2O3 but lower in MgO, CaO, and TiO2 than East Mongolian basalts and display positive K anomaly, which is in contrast to the negative K anomaly of the latter. Despite the evolved nature of the Central‐North Mongolian basalts, the roles of crustal contamination and fractional crystallization, or assimilation coupled with fractional crystallization (AFC), are insignificant in the genesis of the basalt; instead, both the mantle heterogeneity and melting condition have significant contributions to the compositional variations of the basalts. Importantly, the SrNd isotopic signatures suggest that the mantle sources are characterized by mixing of two isotopic components, a depleted mantle (DM) and an enriched mantle (EM). Although, the EM component is variable, which can be ascribed to metasomatized subcontinent lithosphere (SCLM) and altered recycled oceanic crust (ROC) for the mantle sources of the Central‐North and East Mongolian basalts, respectively. Taking these results together with published age and high‐resolution tomographic data, we propose that all Cenozoic volcanism in Mongolia is related to shallow mantle (asthenosphere) upwelling stemming from the mantle transitional zone (MTZ), but the triggering causes for the mantle upwellings are different. The mantle upwelling related to generation of the Central‐North Mongolian basalts was likely triggered by a far‐field effect of the Indo‐Asian collision, which might have caused the avalanched/subducted materials of the Mongol‐Okhotsk and/or the Central Asian orogenic belt (CAOB) that sink into and stagnated within the MTZ. The mantle upwelling related to the formation of the East Mongolian basalts, which are located at the westernmost of the big mantle wedge constructed by the subducting and stagnant Pacific slab, was induced directly by the westward subduction of the Pacific Plate beneath East Asia.

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Chemical and Pb isotope composition of olivine-hosted melt inclusions from the Hannuoba basalts, North China Craton: Implications for petrogenesis and mantle source

Cited by 51 publications

References 109 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

Light Mg Isotopic Composition in the Mantle Beyond the Big Mantle Wedge Beneath eastern Asia

Major, trace element, and SrNd isotopic geochemistry of Cenozoic basalts in Central‐North and East Mongolia: Petrogenesis and tectonic implication

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