volcanic ash

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

One especially noticeable blue-black patch in the rougher section of the valley is believed to be volcanic ash that was later redistributed by Martian winds, as seen in the accompanying 3D perspective views.

From Science Daily • May 15, 2026

"It is known that volcanoes emit methane during eruptions, but until now it was not known that volcanic ash is also capable of partially cleaning up this pollution," he adds.

From Science Daily • May 10, 2026

The results showed that the eggshells could be dated with an accuracy of about five percent when compared with ages determined from volcanic ash layers.

From Science Daily • Dec. 21, 2025

For seven weeks, the team will slowly melt the hard-won ice, releasing ancient dust, volcanic ash, and even tiny marine algae called diatoms that were locked inside when water turned to ice.

From BBC • Jul. 17, 2025

A textbook example occurred after the eruption in 1980 of Mount St. Helens, in southern Washington State, which inundated more than two hundred square miles with magma, volcanic ash, and mud.

From "1491" by Charles C. Mann