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igneous rock

igneous rock: see rock.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on igneous rock from Infoplease:

  • rock - rock rock, aggregation of solid matter composed of one or more of the minerals forming the ...
  • rock: Igneous Rocks - Igneous Rocks Igneous rock originates from the cooling and solidification of molten matter from the ...
  • porphyry, igneous rock - porphyry porphyry , igneous rock composed of large, conspicuous crystals (phenocrysts) and a ...
  • Igneous Rocks - Igneous Rocks Those which have been produced by the agency of fire, as the granitic, the trappean, ...
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See more Encyclopedia articles on: Geology and Oceanography


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