Definition of dunite in English:

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dunite

Pronunciation: /ˈdʌnʌɪt/

noun

[mass noun] Geology
A green to brownish coarse-grained igneous rock consisting largely of olivine.
Example sentences
  • The lowermost rocks are serpentinized dunite and harzburgite, which are best exposed in the NE of the ophiolite.
  • Its lower part displays alternating bands of peridotite, pyroxenite, and dunite, but dunite is dominant throughout most (and especially the upper part) of the unit.
  • In the field, the boundary between crustal units and mantle units is marked by a zone of sheared serpentinite, which overlies more massive largely serpentinized, harzburgite and dunite.

Origin

Mid 19th century: from the name of Dun Mountain, New Zealand, + -ite1.

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