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单词 felsic
释义

Definition of felsic in English:

felsic

adjective ˈfɛlsɪkˈfelsik
Geology
  • Relating to or denoting a group of light-coloured minerals including feldspar, feldspathoids, quartz, and muscovite.

    〔地质〕长英矿物的,长英质的。常与MAFIC 相对

    felsic volcanic rocks
    Often contrasted with mafic
    Example sentencesExamples
    • The rocks of the complex show an overall trend of decreasing mafic minerals and increasing felsic minerals spatially from west to east.
    • The alternating bands of mafic and felsic minerals are a striking and distinctive feature of all gneisses.
    • The enclaves probably represent globules of mafic magma in felsic magma.
    • The present day volumetric variation in the amount of mafic and felsic volcanic rocks preserved in the Parana and Etendeka provinces is interesting.
    • Local hybridization between the mafic and felsic magmas is common.

Origin

Early 20th century: from feldspar + a contraction of silica.

Definition of felsic in US English:

felsic

adjectiveˈfelsik
Geology
  • Relating to or denoting a group of light-colored minerals including feldspar, feldspathoids, quartz, and muscovite.

    〔地质〕长英矿物的,长英质的。常与MAFIC 相对

    felsic volcanic rocks
    Often contrasted with mafic
    Example sentencesExamples
    • The alternating bands of mafic and felsic minerals are a striking and distinctive feature of all gneisses.
    • The present day volumetric variation in the amount of mafic and felsic volcanic rocks preserved in the Parana and Etendeka provinces is interesting.
    • Local hybridization between the mafic and felsic magmas is common.
    • The enclaves probably represent globules of mafic magma in felsic magma.
    • The rocks of the complex show an overall trend of decreasing mafic minerals and increasing felsic minerals spatially from west to east.

Origin

Early 20th century: from feldspar + a contraction of silica.

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更新时间:2024/12/27 1:59:37