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词汇 migmatite
释义

Definition of migmatite in English:

migmatite

noun ˈmɪɡmətʌɪtˈmɪɡməˌtaɪt
Geology
  • A rock composed of two intermingled but distinguishable components, typically a granitic rock within a metamorphic host rock.

    〔地质〕混合岩

    a series of dykes intrude the underlying migmatites
    Example sentencesExamples
    • In such a scenario, the leucogranite sheets might be interpreted to represent the conduits connecting the granite plutons through the migmatites to the granulites.
    • Later, shallower and hotter metamorphism produced widespread sillimanite grade gneisses, migmatites and in situ partial melting.
    • Leucosomes and leucogranites that segregated over variable distances but remained within the migmatites contain entrained inclusion-rich biotite from proximal mesosome-melanosome.
    • He regarded metamorphism and deformation as continuously related processes and found it impossible to accept migmatites as metamorphic rocks.
    • The subautochthonous granodiorites and transitional migmatites contain the youngest zircons of the Pena Negra Complex.

Origin

Early 20th century: from Greek migma, migmat- 'mixture' + -ite1.

Definition of migmatite in US English:

migmatite

nounˈmɪɡməˌtaɪtˈmiɡməˌtīt
Geology
  • A rock composed of two intermingled but distinguishable components, typically a granitic rock within a metamorphic host rock.

    〔地质〕混合岩

    a series of dikes intrude the underlying migmatites
    Example sentencesExamples
    • In such a scenario, the leucogranite sheets might be interpreted to represent the conduits connecting the granite plutons through the migmatites to the granulites.
    • Leucosomes and leucogranites that segregated over variable distances but remained within the migmatites contain entrained inclusion-rich biotite from proximal mesosome-melanosome.
    • The subautochthonous granodiorites and transitional migmatites contain the youngest zircons of the Pena Negra Complex.
    • He regarded metamorphism and deformation as continuously related processes and found it impossible to accept migmatites as metamorphic rocks.
    • Later, shallower and hotter metamorphism produced widespread sillimanite grade gneisses, migmatites and in situ partial melting.

Origin

Early 20th century: from Greek migma, migmat- ‘mixture’ + -ite.

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