: 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 the past, rock quarries would didn't have much use for the basalt rock dust that was a waste product of their mining process.
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Julia Jacobo, ABC News, 22 Apr. 2025
Rocks like limestone and basalt naturally absorb carbon dioxide from the air.
—Julia Jacobo, ABC News, 22 Apr. 2025
By analyzing basalt fragments retrieved from this region, the scientists discovered that these rocks share a similar composition to low-titanium basalts previously collected by NASA's Apollo missions to the moon's near side.
—Andrew Jones, Space.com, 18 Mar. 2025
No visit to southern Martinique would be complete without seeing the spectacular Diamond Rock, a 574-foot-high basalt island off the shore of the Grande Anse du Diamant, an idyllic sandy beach.
—Martinique Tourism Authority, Miami Herald, 7 Mar. 2025
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Julia Jacobo, ABC News, 22 Apr. 2025
Rocks like limestone and basalt naturally absorb carbon dioxide from the air.
—Julia Jacobo, ABC News, 22 Apr. 2025
By analyzing basalt fragments retrieved from this region, the scientists discovered that these rocks share a similar composition to low-titanium basalts previously collected by NASA's Apollo missions to the moon's near side.
—Andrew Jones, Space.com, 18 Mar. 2025
No visit to southern Martinique would be complete without seeing the spectacular Diamond Rock, a 574-foot-high basalt island off the shore of the Grande Anse du Diamant, an idyllic sandy beach.
—Martinique Tourism Authority, Miami Herald, 7 Mar. 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 9 Jun. 2025.
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: a dark gray to black usually fine-grained igneous rock
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