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igneous rock

igneous rock in Culture
igneous rock [(ig-nee-uhs)]

Rocks formed by the cooling and solidifying of molten materials. Igneous rocks can form beneath the Earth's surface, or at its surface, as lava.

Note: Granite, solid volcanic lava, and basalt are examples of igneous rock.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Examples from the Web for igneous rock
Historical Examples
  • They are composed of a kind of igneous rock not found anywhere near Wiltshire.

    Wanderings in Wessex Edric Holmes
  • I did not see any eruption of igneous rock on any part of the day's journey.

  • The Flume, on Star Island, is a fine specimen of the intrusion of igneous rock among the harder formation.

  • What relation do they occasionally bear to sheets of igneous rock?

    Geology James Geikie
  • Several pieces of shale lay exposed under a fold of igneous rock.

    The Long Voyage Carl Richard Jacobi
  • How may granite be at one and the same time a metamorphic and igneous rock?

    Geology James Geikie
  • The rocks are late Paleozoic strata, pierced by a large body of igneous rock.

    Geology William J. Miller
  • The beacons were found to be part of a horizontal, stratified series of sandstones underlying the igneous rock.

    The Home of the Blizzard Douglas Mawson
  • Evil is a state of imperfection running through every vein of nature, from the igneous rock to the brain of man.

    The Bible Of Bibles; Kersey Graves
  • For instance, an igneous rock may become a schist without going through the intermediate stage of sedimentation.

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