peridotite


Also found in: Thesaurus, Encyclopedia, Wikipedia.

per·i·do·tite

 (pĕr′ĭ-dō-tīt′, pə-rĭd′ə-)
n.
Any of various coarse-grained igneous rocks that consist mainly of olivine and pyroxene and are believed to be a main constituent of the earth's mantle.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

peridotite

(ˌpɛrɪˈdəʊtaɪt)
n
(Minerals) a dark coarse-grained ultrabasic plutonic igneous rock consisting principally of olivine
[C19: from French, from peridot]
peridotitic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

per•i•do•tite

(ˈpɛr ɪˌdoʊ taɪt, pəˈrɪd əˌtaɪt)

n.
a coarsely granular igneous rock composed chiefly of olivine admixed with various other minerals.
[1895–1900; < French; see peridot, -ite1]
per`i•do•tit′ic (-ˈtɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

peridotite

A coarse-grained igneous rock, mainly of olivine and pyroxene, such as dunite.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.peridotite - a dark coarse-grained igneous rock consisting principally of olivine
igneous rock - rock formed by the solidification of molten magma
kimberlite - a rare type of peridotite that sometimes contains diamonds; found in South Africa and Siberia
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
They placed marine sediment samples in a vessel with a rock called peridotite that is the most common kind of rock found in the part of the mantle where diamonds form.
For example, xenoliths in Eastern Australian basalts are a good source of mantle peridotite. (It is a good idea to refer to all olivine-rich mantle rock as peridotite rather than using a more detailed classification.)
They found that the best explanation for the speeds actually observed underground versus those predicted in their virtual rock models was that 1 to 2 percent of the roots of the cratons was made up of diamonds, while the rest was made up of peridotite (the main type of rock in Earth's upper mantle) and a little bit of eclogite rocks (from the ocean's crust).
The carbon-capturing formations here, consisting largely of a rock called peridotite, are in a slice of oceanic crust and the mantle layer below it which was thrust up on land by tectonic forces nearly 100 million years ago.
The carbon-capturing formations here, consisting largely of a rock called peridotite, are in a slice of oceanic crust and the mantle layer below it that was thrust up on land by tectonic forces nearly 100 million years ago.
it is the obdurate physical (and chemical) adversity of things such as peridotite bedrock which often drives life to its most surprising transformations" (Wallace, 1983)
It develops on shallow lithosoils, poor in nutrients, on a various geological substrates: peridotite (lustrous schists) in the Cap Corse, rhyolite in the Scandola Nature Reserve or granodiorite in the Fango.
Tang, "Iron isotope variations in spinel peridotite xenoliths from North China Craton: Implications for mantle metasomatism," Contributions to Mineralogy and Petrology, vol.
This descends from the northern slopes of the Tablelands to flow across Trout River Gulch over a prominent alluvial fan composed almost entirely of coarse peridotite rubble material (Fig.
The geological substrate is peridotite. The soil horizon is shallow with loamy sand texture and pH around 7.5 (Monokrousos et al.
Major element and trace element analyses of selected schist, schist sediment, peridotite and pyroxenite samples are given in Table 2.