On Magma Origin of SaimaBailinchuan Alkaline Volcanic Intrusive Complex
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Abstract:
The sheetliked SaimaBailinchuan alkaline vo lcanicintrusive complex consists of syenitesphonolite and nepheline syenite sTwo type s of magmas were produced from the metasomatized mantleThe maficpoor and al kalialuminumrich alkaline magmas were generated by meltng of mafic mica and clinopyroxene in the source regionThe sye nite magma was formed by enrichment in metasomatized mantle ,and the nepheline syenite magma was produced from the more enriched mantle after a period of pause of magma activitySome of the compositions of the uppe r crust joined in the alkaline magmas
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Tan Dongjuan, Lin Jingqian, Shan Xuanlong.1999. On Magma Origin of SaimaBailinchuan Alkaline Volcanic Intrusive Complex[J]. Geological Review,45(7):474-481.