adjective
COLLOCATIONS FROM CORPUS
■ NOUN
intrusion
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The island was uplifted and igneous intrusions took place.
rock
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These formed hard igneous rocks which have resisted erosion.
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In the same way, the earmarks of igneous rocks are their mineralogy, textures, and structures.
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Which are these hills of igneous rocks ?
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Though igneous rocks are not layered, as sediments are, they too have characteristics that place them in time.
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Extensive areas within continental platforms are formed of basement, a complex of metamorphic and igneous rocks of Palaeozic or Precambrian age.
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Many of these materials are what we would call igneous rocks if we were to find them on Earth.
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In describing the physical properties of igneous rocks and the minerals that compose them, their texture and acidity were mentioned.
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Figure 3-17 shows graphically the division of igneous rocks according to their mineral content and their grain size.
EXAMPLES FROM CORPUS
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At a later time, according to Hutton, subterranean heat may produce an intrusion of igneous rock.
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Auger spectroscopy of igneous and metamorphic rocks has shown fine films of carbon covering grain boundaries.
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Extensive areas within continental platforms are formed of basement, a complex of metamorphic and igneous rocks of Palaeozic or Precambrian age.
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Granulites are like their textural equivalents, granular igneous rocks, in being mosaics of interlocking crystals of roughly equal size.
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The same structural features, sometimes less easily recognized, are found in igneous and metamorphic rocks.
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Though igneous rocks are not layered, as sediments are, they too have characteristics that place them in time.
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Thus it is very well developed on fine-grained basic igneous and metamorphic rocks.
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Which are these hills of igneous rocks?