volcanic tuff

American  

noun

1. tuff.

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Etymology

Origin of volcanic tuff

First recorded in 1805–15

Example Sentences

See Examples For:

volcanic tuff

The petroglyphs can be found on volcanic tuff formations formed over 760,000 years ago when a large eruption released hot ash that settled over the region.

From Los Angeles Times ● Mar. 11, 2025

The river tracks a diverse landscape from the southern edge of the Rocky Mountains through rugged basalt hillsides, layers of volcanic tuff, and the red and yellow cliffs made famous by painter Georgia O’Keeffe.

From Seattle Times ● Sep. 18, 2021

Since the 1980s, Smith Rock has been a sport-climbing mecca for climbers from all over the world, with more than 1,800 routes, some of them permanently bolted, up the volcanic tuff face.

From Washington Post ● Oct. 26, 2017

The evidence includes a small box made from volcanic tuff, or consolidated ash, which was found next to the bones and is inscribed with John's name and his feast day in Ancient Greek.

From Reuters ● Jun. 15, 2012

The kindly, generous twilight, so unlike the swift shrift of the Florida levels, still lingers; and presently, amid bits of syenite, volcanic tuff and scoria, she has found this nodule of amygdaloid.

From Lippincott's Magazine of Popular Literature and Science Volume 12, No. 31, October, 1873 by Various