peridotite

noun

pe·​ri·​do·​tite pə-ˈri-də-ˌtīt How to pronounce peridotite (audio)
: any of a group of granular igneous rocks composed of ferromagnesian minerals and especially olivine
peridotitic adjective

Examples of peridotite in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
As the National Academies report explains, carbon-dioxide–rich fluids injected into basalt or peridotite formations (two kinds of igneous rock that make up much of the earth’s mantle) react with the rock, converting the dissolved carbon dioxide into solid carbon-containing minerals. Fred Krupp, Foreign Affairs, 12 Feb. 2019 For example, scientists are studying how the surface-level peridotite in Oman’s rock formations reacts with the air and absorbs large amounts of carbon. Fred Krupp, Foreign Affairs, 12 Feb. 2019 Different layers of the mantle are made up of different rock types, and one of the most common is an igneous rock high in silica content called peridotite. Riley Black, Smithsonian Magazine, 24 July 2024 The team drilled down an astonishing 4,160 ft (1,268 m) into the peridotite, and recovered 71% of the rock. Michael Irving, New Atlas, 9 Aug. 2024 In the case of peridotite, geologists have found that very old remnants from Earth’s mantle are much less oxidized than those of the modern mantle. Riley Black, Smithsonian Magazine, 24 July 2024 This movement stripped the upper crust from the rising peak, exposing swaths of its peridotite core. Quanta Magazine, 4 Jan. 2024 A bit taller than Mount Rainier, this submarine mountain is largely made of peridotite, a type of rock that dominates the upper mantle. Quanta Magazine, 4 Jan. 2024 The upper mantle below that is made up of peridotite and spans 217 miles. Tree Meinch, Discover Magazine, 23 June 2023

Word History

Etymology

French péridotite, from péridot

First Known Use

1882, in the meaning defined above

Time Traveler
The first known use of peridotite was in 1882

Dictionary Entries Near peridotite

Cite this Entry

“Peridotite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peridotite. Accessed 19 Nov. 2024.

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