roche volcanique

Definitions of roche volcanique
  1. noun
    rock formed by the solidification of molten magma
    synonyms: roche éruptive
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    types:
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    batholite
    large mass of intrusive igneous rock believed to have solidified deep within the earth
    basalte
    the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
    granit
    plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz
    lave
    rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
    type of:
    pierre, roche
    material consisting of the aggregate of minerals like those making up the Earth's crust
  2. noun
    extrusive igneous rock solidified near or on the surface of the Earth
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    types:
    basalte
    the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene
    lave
    rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
    type of:
    roche éruptive
    rock formed by the solidification of molten magma
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