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词汇 nephelinite
释义

Definition of nephelinite in English:

nephelinite

noun ˈnɛf(ə)lɪnʌɪtˈnefələˌnīt
mass nounGeology
  • A fine-grained basaltic rock containing nepheline in place of plagioclase feldspar.

    〔地质〕霞岩

    Example sentencesExamples
    • Another New Zealand locality for this type of nephelinite is in the Auckland Domain.
    • Magma modelling showed that olivine nephelinite and basanite could form by different degrees of partial melting of the mantle source, with amphibole, garnet, olivine and clinopyroxene in the residuum.
    • Geochemically, the pyroxene nephelinite is highly enriched in LILE compared with the first one.
    • The lava flows within the pyroclasts are composed of nephelinite and phonolite.
    • The composition studied has very low albite and is classified as transitional between olivine nephelinite and nepheline-rich basanite.

Definition of nephelinite in US English:

nephelinite

nounˈnefələˌnīt
Geology
  • A fine-grained basaltic rock containing nepheline in place of plagioclase feldspar.

    〔地质〕霞岩

    Example sentencesExamples
    • Magma modelling showed that olivine nephelinite and basanite could form by different degrees of partial melting of the mantle source, with amphibole, garnet, olivine and clinopyroxene in the residuum.
    • The lava flows within the pyroclasts are composed of nephelinite and phonolite.
    • Geochemically, the pyroxene nephelinite is highly enriched in LILE compared with the first one.
    • Another New Zealand locality for this type of nephelinite is in the Auckland Domain.
    • The composition studied has very low albite and is classified as transitional between olivine nephelinite and nepheline-rich basanite.
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