Petrology and geochemistry of spinel peridotite xenoliths from Hannuoba and Qixia, North China craton

Rudnick, Roberta L.; Gao, Shan; Ling, Weijun; Liu, Yongsheng; McDonough, William F.

doi:10.1016/j.lithos.2004.03.033

Cited by 507 publications

(254 citation statements)

References 56 publications

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“…6), consistent with a derivation from magmas (Simkin and Smith 1970;Garcia et al 1995;Ren et al 2004). Besides, Fo values in olivines in Xindian basalts are relatively low (Fo \ 85), compared with those of mantle xenoliths from Fan and Hooper 1989;Zheng et al 1998Zheng et al , 2001Zheng et al , 2006Fan et al 2000;Rudnick et al 2004;Xu and Bodinier 2004;Yang et al 2008;Chu et al 2009;Xia et al 2010;Xiao et al 2010). Furthermore, melt inclusions hosted by Xindian olivines are mostly isolated and thus original, in contrast with the absence of original melt inclusions in olivine xenocrysts (Schiano 2003).…”

Section: Discussionsupporting

confidence: 77%

“…However, since Mesozoic, especially Late Mesozoic, the NCC has been destabilized, as expressed by intense magma activities and references therein). The mantle xenoliths entrained by Cenozoic basalts further reveal that Cenozoic SCLM beneath eastern NCC is thin (\80 km), hot (*65mW/m 2 ), young and fertile (e.g., Menzies and Xu 1998;Zheng et al 1998Zheng et al , 2006Fan et al 2000;Gao et al 2002;Rudnick et al 2004;Xu and Bodinier 2004;Chu et al 2009). This suggests a removal of [100 km of Archean lithosphere during Phanerozoic (Menzies et al 1993;Griffin et al 1998;Fan et al 2000).…”

Section: Geological Background and Petrographymentioning

confidence: 93%

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Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Zhang

Qian

et al. 2012

Contrib Mineral Petrol

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The geochemical characteristics of melt inclusions and their host olivines provide important information on the processes that create magmas and the nature of their mantle and crustal source regions. We report chemical compositions of melt inclusions, their host olivines and bulk rocks of Xindian basalts in Chifeng area, North China Craton. Compositions of both bulk rocks and melt inclusions are tholeiitic. Based on petrographic observations and compositional variation of melt inclusions, the crystallizing sequence of Xindian basalts is as follows: olivine (at MgO [ *5.5 wt%), plagioclase (beginning at MgO = *5.5 wt%), clinopyroxene and ilmenite (at MgO \ 5.0 wt%). High Ni contents and Fe/Mn ratios, and low Ca and Mn contents in olivine phenocrysts, combining with low CaO contents of relatively high MgO melt inclusions (MgO [ 6 wt%), indicate that Xindian basalts are possibly derived from a pyroxenite source rather than a peridotite source. In the CS-MS-A diagram, all the high MgO melt inclusions (MgO [ 6.0 wt%) project in the field between garnet ? clinopyroxene ? liquid and garnet ? clinopyroxene ? orthopyroxene ? liquid near 3.0 GPa, further suggesting that residual minerals are mainly garnet and clinopyroxene, with possible presence of orthopyroxene, but without olivine. Modeling calculations using MELTS show that the water content of Xindian basalts is 0.3-0.7 wt% at MgO = 8.13 wt%. Using 20-25 % of partial melting estimated by moderately incompatible element ratios, the water content in the source of Xindian basalts is inferred to be C450 ppm, much higher than 6-85 ppm in dry lithospheric mantle. The melting depth is inferred to be *3.0 GPa, much deeper than that of tholeiitic lavas (\2.0 GPa), assuming a peridotite source with a normal mantle potential temperature. Such melting depth is virtually equal to the thickness of lithosphere beneath Chifeng area (*100 km), suggesting that Xindian basalts are derived from the asthenospheric mantle, if the lithospheric lid effect model is assumed.

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Section: Discussionsupporting

confidence: 77%

Section: Geological Background and Petrographymentioning

confidence: 93%

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Zhang

Qian

et al. 2012

Contrib Mineral Petrol

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“…Xenoliths in Paleozoic kimberlites show that a thick (∼200 km), cold (∼40 mW/m 2 ), and highly refractory lithospheric mantle existed until the midOrdovician (e.g., Zheng et al 2006), indicating that Archean crust is underlain by a thick, cold, and refractory Archean lithospheric mantle (e.g., Griffin et al 1998;Zhang et al 2009). However, peridotite xenoliths from the Cenozoic basalts suggest a hot (60-80 mW/m 2 ), thin (80-60 km), and fertile younger lithospheric mantle beneath eastern China (Griffin et al 1998;Rudnick et al 2004;Zhang et al 2009). These observations suggest that the lithospheric mantle of the East China Craton has not been only considerably thinned, but also compositionally changed from highly refractory to more fertile mantle during Phanerozoic times.…”

Section: Eastern Asian Xenolithsmentioning

confidence: 99%

The role of melt depletion versus refertilization in the major element chemistry of four-phase spinel peridotite xenoliths

Embey-Isztin

2016

Central European Geology

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Mantle peridotites are interpreted as either residues after partial melting and melt extraction or products of igneous refertilization of refractory peridotites. The simple distinction between these models is difficult to assess because in chemical variation diagrams, both processes lead essentially to the same results. The only exception is the Ti-in-Cpx versus Ti-in-whole-rock plots, which can successfully discriminate between these models. In this study, a modified version of Ti-in-Cpx versus Mg#-in-olivine plots was applied to ∼1,500 spinel peridotite xenoliths from worldwide localities. The results showed that the vast majority of shallow mantle samples are consistent with the partial melting model; however, a minority of samples may indicate refertilization of formerly refractory mantle domains.

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“…143 Nd/ 144 Nd = 0.512637 ± 3 (2 , n = 2) for BCR-2, and 87 Sr/ 86 Sr = 0.710254 ± 8 (2 , n = 22) for SRM NBS-987. Analytical details and analysis of the reference materials were reported in Rudnick et al (2004).…”

Section: Whole-rock Sr-nd Isotopesmentioning

confidence: 99%

2.24 Ga mafic dykes from Taihua Complex, southern Trans-North China Orogen, and their tectonic implications

Han

Chen

Yao

et al. 2015

Precambrian Research

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Petrology and geochemistry of spinel peridotite xenoliths from Hannuoba and Qixia, North China craton

Cited by 507 publications

References 56 publications

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

Constraints from melt inclusions and their host olivines on the petrogenesis of Oligocene-Early Miocene Xindian basalts, Chifeng area, North China Craton

The role of melt depletion versus refertilization in the major element chemistry of four-phase spinel peridotite xenoliths

2.24 Ga mafic dykes from Taihua Complex, southern Trans-North China Orogen, and their tectonic implications

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