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单词 lamprophyre
释义

Definition of lamprophyre in English:

lamprophyre

nounˈlamprəˌfʌɪəˈlamprəˌfī(ə)r
mass nounGeology
  • A porphyritic igneous rock consisting of a fine-grained feldspathic groundmass with phenocrysts chiefly of biotite.

    〔地质〕煌斑岩

    Example sentencesExamples
    • Remelting of these metasomites produced the Gardar lamprophyre magmas.
    • The only known igneous rocks in the area are Permian periodotite and lamprophyre dikes as well as diatremes of ultramafic composition associated with the Fluorite district.
    • Melts of these metasomites were volatile rich and hence ascended rapidly through the lithosphere, forming the lamprophyre magmas.
    • Subordinate volumes of carbonatite and lamprophyre magmas are also present.
    • It has also been found in silica-poor igneous rocks, such as syenite, nepheline syenite, serpentinite, and lamprophyre.

Origin

Late 19th century: from Greek lampros 'bright, shining' + porphureos 'purple'.

Definition of lamprophyre in US English:

lamprophyre

nounˈlamprəˌfī(ə)r
Geology
  • A porphyritic igneous rock consisting of a fine-grained feldspathic groundmass with phenocrysts chiefly of biotite.

    〔地质〕煌斑岩

    Example sentencesExamples
    • The only known igneous rocks in the area are Permian periodotite and lamprophyre dikes as well as diatremes of ultramafic composition associated with the Fluorite district.
    • It has also been found in silica-poor igneous rocks, such as syenite, nepheline syenite, serpentinite, and lamprophyre.
    • Remelting of these metasomites produced the Gardar lamprophyre magmas.
    • Melts of these metasomites were volatile rich and hence ascended rapidly through the lithosphere, forming the lamprophyre magmas.
    • Subordinate volumes of carbonatite and lamprophyre magmas are also present.

Origin

Late 19th century: from Greek lampros ‘bright, shining’ + porphureos ‘purple’.

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更新时间:2024/11/11 8:22:30