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词汇 phyllite
释义

Definition of phyllite in English:

phyllite

noun ˈfɪlʌɪtˈfɪlaɪt
mass nounGeology
  • A fine-grained metamorphic rock with a well-developed laminar structure, intermediate between slate and schist.

    〔地质〕千枚岩,硬绿泥石

    Example sentencesExamples
    • Foliated rocks may be slate, phyllite, or schist according to grain size.
    • Clasts in this facies are commonly arranged into stripes of a single lithology (typically phyllite, schist, quartzite or marble) and show peaks in the angular and very angular classes.
    • It is composed of gneiss and migmatite that contain minor lenses of schist, marble, phyllite and quartzite.
    • The sequence comprises Lower Ordovician conglomerates and carbonates overlain by Upper Ordovician to Middle Devonian limestone with occasional phyllite and quartzite.
    • It is underlain by schist, phyllite, and quartzite, although outcrops of serpentine are common in the area.

Origin

Late 19th century: from Greek phullon 'leaf' + -ite1.

Definition of phyllite in US English:

phyllite

nounˈfɪlaɪtˈfilīt
Geology
  • A fine-grained metamorphic rock with a well-developed laminar structure, intermediate between slate and schist in degree of metamorphism.

    〔地质〕千枚岩,硬绿泥石

    Example sentencesExamples
    • The sequence comprises Lower Ordovician conglomerates and carbonates overlain by Upper Ordovician to Middle Devonian limestone with occasional phyllite and quartzite.
    • It is composed of gneiss and migmatite that contain minor lenses of schist, marble, phyllite and quartzite.
    • Clasts in this facies are commonly arranged into stripes of a single lithology (typically phyllite, schist, quartzite or marble) and show peaks in the angular and very angular classes.
    • It is underlain by schist, phyllite, and quartzite, although outcrops of serpentine are common in the area.
    • Foliated rocks may be slate, phyllite, or schist according to grain size.

Origin

Late 19th century: from Greek phullon ‘leaf’ + -ite.

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