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词汇 phonolite
释义

Definition of phonolite in English:

phonolite

noun ˈfəʊnəlʌɪtˈfoʊnəˌlaɪt
mass nounGeology
  • A fine-grained volcanic igneous rock composed of alkali feldspars and nepheline.

    〔地质〕响岩

    Example sentencesExamples
    • South of the city of Isparta pyroclastic rocks are interbedded with rhyolite, trachyte, phonolite and lamproite flows (the Golcuk and Bucak Volcanics of Savascin et al.).
    • In the Canaries, the lavas are much more compositionally varied in each of these stages, ranging from tholeiitic basalts to phonolites and trachytes.
    • The dominant magma types are basalts and hawaiites, with lesser amounts of trachytes, quartz trachytes, alkali rhyolites and phonolites.
    • Plagioclase dramatically removes Sr at intermediate stages and alkali feldspars sequester Ba and Rb as late-stage trachytes and phonolites form in alkaline magmas.

Origin

Early 19th century: from phono- 'relating to sound' (because of its resonance when struck) + -ite1.

Definition of phonolite in US English:

phonolite

nounˈfōnəˌlītˈfoʊnəˌlaɪt
Geology
  • A fine-grained volcanic rock composed of alkali feldspars and nepheline.

    〔地质〕响岩

    Example sentencesExamples
    • The dominant magma types are basalts and hawaiites, with lesser amounts of trachytes, quartz trachytes, alkali rhyolites and phonolites.
    • South of the city of Isparta pyroclastic rocks are interbedded with rhyolite, trachyte, phonolite and lamproite flows (the Golcuk and Bucak Volcanics of Savascin et al.).
    • In the Canaries, the lavas are much more compositionally varied in each of these stages, ranging from tholeiitic basalts to phonolites and trachytes.
    • Plagioclase dramatically removes Sr at intermediate stages and alkali feldspars sequester Ba and Rb as late-stage trachytes and phonolites form in alkaline magmas.

Origin

Early 19th century: from phono- ‘relating to sound’ (because of its resonance when struck) + -ite.

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