Ignimbrite
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Ignimbrite is a type of volcanic rock, consisting of a typically welded tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly
Ignimbrite from Java, Indonesia
The caprock in this photo is the ignimbrite layer of the Rattlesnake Formation in Oregon.
Rheomorphic flow structures in a welded ignimbrite, Isle of Lipari, Italy
A block of ignimbrite
Tuff
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Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash lithifies into solid rock. Rock that contains greater than 75% as
Ignimbrite
…Ignimbrite is a type of volcanic rock, consisting of a typically welded tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by…
Tuff from the Guadalupe Formation in Luzon, Philippines
Cliff face of welded tuff pockmarked with holes — some natural, some man-made — from Bandelier National Monument, New Mexico
Etruscan tuff blocks from a tomb at Banditaccia, Italy
A house constructed of tuff blocks in Rieden, Rhineland-Palatinate, in the Volcanic Eifel region, Germany