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词汇 septarium
释义

Definition of septarium in English:

septarium

nounPlural septaria sɛpˈtɛːrɪəmˌsepˈterēəm
Geology
  • A concretionary nodule, typically of ironstone, having radial cracks filled with calcite or another mineral.

    〔地质〕龟背石

    Example sentencesExamples
    • Dolostone septaria and iron sulfide nodules occur in the Late Devonian Huron Shale.
    • Phosphatic nodules, large dolostone septaria, iron sulfide nodules, and crystal-lined vugs are present.
    • Iron oxide nodules are commonly septaria, exhibiting networks of thin veins of coarsely granular calcite.
    • Matrix minerals of the dolostone septaria are ferroan dolomite, quartz, calcite, and pyrite.
    • Large dolostone septaria and iron sulfide nodules occur in the Late Devonian Huron Shale.

Derivatives

  • septarian

  • adjective
    Geology
    • Polygonal septarian cracks are filled with sparry calcite cements or micrite matrix.
      Example sentencesExamples
      • Consequently, they are only readily detected in septarian cracks and vugs that show an incomplete paragenesis.
      • The areas along fault planes were subjected to a shearing action that produced a pattern of fracturing that is different from the desiccation cracking of a normal septarian concretion.
      • On Thursday, the group moved to Moeraki, home of the famous ‘Moeraki boulders,’ large septarian nodules that weather out of the cliffs.
      • These are found rarely in large septarian concretions in the Huron Shale in north-central Ohio near Milan, in Huron County.

Origin

Late 18th century: modern Latin, from Latin septum 'enclosure'.

Definition of septarium in US English:

septarium

nounˌsepˈterēəm
Geology
  • A concretionary nodule, typically of ironstone, having radial cracks filled with calcite or another mineral.

    〔地质〕龟背石

    Example sentencesExamples
    • Large dolostone septaria and iron sulfide nodules occur in the Late Devonian Huron Shale.
    • Matrix minerals of the dolostone septaria are ferroan dolomite, quartz, calcite, and pyrite.
    • Phosphatic nodules, large dolostone septaria, iron sulfide nodules, and crystal-lined vugs are present.
    • Dolostone septaria and iron sulfide nodules occur in the Late Devonian Huron Shale.
    • Iron oxide nodules are commonly septaria, exhibiting networks of thin veins of coarsely granular calcite.

Origin

Late 18th century: modern Latin, from Latin septum ‘enclosure’.

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