: a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite
Examples of basalt in a Sentence
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In addition to steatite, sedimentary stones and basalt were also carved for pipes.
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Matthew Wills, JSTOR Daily, 14 June 2025
What the Dutch scientists did was to look at the ratios of ruthenium and tungsten isotopes found in oceanic basalts and picrites from Hawaii, Baffin Island, Galápagos, and La Réunion islands.
—David Szondy
june 07, New Atlas, 7 June 2025
Some metals like chromium and nickel can derive from weathering of basalt, a type of volcanic rock quite common worldwide, and some metamorphic rocks.
—David Bressan, Forbes.com, 28 May 2025
Flashback: Constructed in 1866, the 32-foot pyramid was built from basalt taken from a ledge on the north side of what is now Oswego Lake and could withstand temperatures of up to 2,800° Fahrenheit.
—Meira Gebel, Axios, 17 Jan. 2025
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Matthew Wills, JSTOR Daily, 14 June 2025
What the Dutch scientists did was to look at the ratios of ruthenium and tungsten isotopes found in oceanic basalts and picrites from Hawaii, Baffin Island, Galápagos, and La Réunion islands.
—David Szondy
june 07, New Atlas, 7 June 2025
Some metals like chromium and nickel can derive from weathering of basalt, a type of volcanic rock quite common worldwide, and some metamorphic rocks.
—David Bressan, Forbes.com, 28 May 2025
Flashback: Constructed in 1866, the 32-foot pyramid was built from basalt taken from a ledge on the north side of what is now Oswego Lake and could withstand temperatures of up to 2,800° Fahrenheit.
—Meira Gebel, Axios, 17 Jan. 2025
See All Example Sentences for basalt
Cite this Entry
“Basalt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basalt. Accessed 30 Jun. 2025.
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: a dark gray to black usually fine-grained igneous rock
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