igneous rock

Noun
  1. Rock formed by the solidification of molten magma (synset 114956017)
    is a type of: rock, stone - material consisting of the aggregate of minerals like those making up the Earth's crust
    subtypes:
    • andesite - a dark grey volcanic rock
    • aplite - light-colored and fine-grained granitic rock consisting chiefly of quartz and feldspars
    • groundmass - (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded
    • adesite - dark greyish extrusive rock
    • batholite, batholith, pluton, plutonic rock - large mass of intrusive igneous rock believed to have solidified deep within the earth
    • diorite - a granular crystalline intrusive rock
    • gabbro - one of a family of granular intrusive rocks
    • pegmatite - a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements
    • peridotite - a dark coarse-grained igneous rock consisting principally of olivine
    • rhyolite - very acid volcanic rock
    • volcanic rock - extrusive igneous rock solidified near or on the surface of the Earth
    • porphyritic rock, porphyry - any igneous rock with crystals embedded in a finer groundmass of minerals
    substance holonym: sodalite - a vitreous mineral consisting of sodium aluminum silicate and sodium chloride in crystalline form; occurs in igneous rocks

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