: 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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Tucked away in south-central Washington, about 145 miles southeast of Seattle, the Yakima Valley stretches across fertile farmland framed by rolling hills, basalt ridges, and the winding Yakima River.
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Vivian Chung, Travel + Leisure, 14 May 2026
According to the team, basalt naturally contains iron and aluminum alongside calcium.
—Neetika Walter, Interesting Engineering, 14 May 2026
The falls are fed by underground springs flowing through porous volcanic basalt in the Cascade Range, creating the appearance that water is emerging directly from the cliff face itself.
—Corey Schmidt, Sacbee.com, 6 May 2026
Instead, the data point to a surface dominated by basalt, a dark volcanic rock rich in iron and magnesium commonly found on the moon and Mercury, the researchers say.
—Sharmila Kuthunur, Space.com, 4 May 2026
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Vivian Chung, Travel + Leisure, 14 May 2026
According to the team, basalt naturally contains iron and aluminum alongside calcium.
—Neetika Walter, Interesting Engineering, 14 May 2026
The falls are fed by underground springs flowing through porous volcanic basalt in the Cascade Range, creating the appearance that water is emerging directly from the cliff face itself.
—Corey Schmidt, Sacbee.com, 6 May 2026
Instead, the data point to a surface dominated by basalt, a dark volcanic rock rich in iron and magnesium commonly found on the moon and Mercury, the researchers say.
—Sharmila Kuthunur, Space.com, 4 May 2026
See All Example Sentences for basalt
Cite this Entry
“Basalt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basalt. Accessed 20 May. 2026.
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: a dark gray to black usually fine-grained igneous rock
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