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gabbro

/gab-roh/US // ˈgæb roʊ //UK // (ˈɡæbrəʊ) //

辉长岩,辉绿岩,辉石岩,闪长岩

Definitions

n.名词 noun
  1. 1

    plural gab·bros.Petrology.

    • : a dark granular igneous rock composed essentially of labradorite and augite.

Examples

  • Peridotite and gabbro form much of the eastern peninsula (Banggai).

  • Gabbro, a typical basic rock, corresponds to basalt in chemical composition.

  • The gneisses appear to be due in many cases to the crushing and shearing of deep-seated igneous rocks, such as granite and gabbro.

  • The one exception is on Caribou Ridge, which is capped by a much altered gabbro.

  • These volcanic materials are pierced by serpentine, gabbro and granite.