volcanic tuff

American  

noun

1. tuff.

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Etymology

Origin of volcanic tuff

First recorded in 1805–15

Example Sentences

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

Fish Slough, a National Natural Landmark on the eastern edge of the tablelands, includes vivid petroglyphs chipped into bizarrely eroded volcanic tuff formations that overlook a verdant desert oasis laced with meandering spring-fed creeks.

From Los Angeles Times • Jul. 19, 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 visible land was of black or chocolate-brown, being composed of volcanic tuff, basalts, and granite.

From South with Scott by Mountevans, Edward Ratcliffe Garth Russell Evans, baron