ignimbrite
noun
ig·nim·brite
ˈig-nəm-ˌbrīt 
: a hard rock formed by solidification of chiefly fine deposits of volcanic ash
Examples of ignimbrite in a Sentence
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Several geologists consulted by The New York Times said that an Iranian survey of the Fordo area, published in 2020 in Geopersia, an academic journal from the University of Tehran, indicates that the rock there consists largely of ignimbrite, a type of volcanic rock.
—
Samuel Granados,
New York Times,
20 Aug. 2025
Its largest eruption put down a 200m thick layer of ignimbrite—a frozen foam of volcanic ash, rock, and gas—over much of the central north island.
—
Chris Lee,
Ars Technica,
16 Oct. 2017
The Valley of 10,000 Smokes, showing the extensive erosion through the ignimbrite deposited in the 1912 eruption of Katmai, Alaska.
—
Erik Klemetti,
Discover Magazine,
20 May 2011
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Samuel Granados,
New York Times,
20 Aug. 2025
Its largest eruption put down a 200m thick layer of ignimbrite—a frozen foam of volcanic ash, rock, and gas—over much of the central north island.
—
Chris Lee,
Ars Technica,
16 Oct. 2017
The Valley of 10,000 Smokes, showing the extensive erosion through the ignimbrite deposited in the 1912 eruption of Katmai, Alaska.
—
Erik Klemetti,
Discover Magazine,
20 May 2011
Cite this Entry
“Ignimbrite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ignimbrite. Accessed 5 Jul. 2026.
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