American Heritage® Dictionary of the English Language, Fourth Edition
- n. A volcanic rock formed by the welding together of tuff material from an explosive volcanic eruption.
- From Latin ignis ("fire") + imbris ("shower; stormcloud") + -ite. (Wiktionary)
- Latin ignis, fire + imber, imbr-, rain + -ite1. (American Heritage® Dictionary of the English Language, Fourth Edition)
“A little info for your brain: The Cappadocia region is largely underlain by sedimentary rocks formed in lakes and streams, and ignimbrite deposits erupted from ancient volcanoes approximately 9 to 3 million years ago late Miocene to Pliocene epochs.”
“Past eruptions from the Taupo cauldera and other northern volcanic centers formed a number of large upland ignimbrite plateaus.”
“It would fall into the 17 to 34 m.y. old category of central Nevada ash-flow tuffs (part of the Mid-Tertiary ignimbrite flare-up), and is probably in the 22 to 25 m.y. old range (that's my guess based on work in the region quite a while ago - the rocks haven't aged too much since then).”
“Some of the calderas erupting the large-volume ash-flow tuffs of Nevada are truly huge, as can be seen in the last link and in this one, where the debatable subject is whether the ignimbrite flare-up had anything to do with regional extreme extension in Nevada.”
“These small ridges are composed of mostly fresh, ignimbrite cobbles and reveal little pedogenic development.”
“Much later, talking it over with Fred LaRoux, I'd learn that this was ignimbrite, volcanic ashes left behind by ancient eruptions that had been compacted over time to form a substance much like concrete.”
“In parts of China, houses were built of bricks carved from ignimbrite quarries, but in northern Italy the opposite approach had been taken, with homes and shops being excavated within tuff deposits.”
“The inner 7. 5-kilometer-wide caldera, which was formed during emplacement of the Bali (or Ubud) ignimbrite, has been dated at about 23670 and 28500 years ago.”
“40Ar/39Ar dating that an ignimbrite overlying the artefact layers at Wolo Sege was erupted 1.02”
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