volcanic ash

American  

noun

Geology.

1. ash.

---

Etymology

Origin of volcanic ash

First recorded in 1790–1800

Example Sentences

Their evidence suggests that volcanic activity around 1345 caused temperatures to drop sharply over consecutive years because of the release of volcanic ash and gases which blocked out some sunlight.

From BBC

Modern Science Meets Ancient Stone: Using volcanic ash dating, magnetic patterns preserved in ancient sediments, chemical analyses of rock, and microscopic plant traces, the researchers reconstructed an environmental timeline that connects early toolmaking to major climatic transformations.

From Science Daily

Many football fans will be aware of the story of the volcanic ash cloud that scuppered Robert Lewandowski's potential move to Blackburn Rovers - but there was another club in England the striker wishes he had joined.

From BBC

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

It is a reference to the volcanic ash that helped preserve its bones in an ancient riverbed.

From BBC