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{%type%} Definitions

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n. - A dark coarse-grained igneous rock consisting principally of olivine.

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Usage examples (39)
  • C peridotite and dunite the upper mantle is composed of ultramafic rock called peridotite which is mostly olivines and pyroxenes.
  • It is a unique type of rock, peridotite, which is normally found only much deeper in the earth, but which juts up to the mantel in the Atlantic massif.
  • The approach consists of drilling into a layer of peridotite which is fractured and heated.
  • The upper one, from 67. 0m to 70. 3m is a medium grained, dark grey-green to grey, lineated, biotitized, foliated metagabbroic peridotite which is weakly garnetiferous.
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