ignimbrite
Sign in to savethumb|Rocks from the Bishop tuff from California, United States, uncompressed with [[pumice on left; compressed with fiamme on right]] thumb|The caprock in this photo is the ignimbrite layer of the [[Rattlesnake Formation in Oregon.]]
~17 min read
Encyclopedic overview
14 sectionsContents
- Deposition
- ''En masse'' model
- Rheomorphic flow model
- Petrology
- Mineralogy
- Geochemistry
- Alteration
- Welding
- Morphology and occurrence
- Distribution
- Use
- See also
- References
- Further reading
thumb|Rocks from the Bishop tuff from California, United States, uncompressed with [[pumice on left; compressed with fiamme on right]] thumb|The caprock in this photo is the ignimbrite layer of the [[Rattlesnake Formation in Oregon.]]
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 being denser than the surrounding atmosphere. New Zealand geologist Patrick Marshall (1869–1950) coined the term ignimbrite from the Latin igni- [fire] and imbri- [rain].
Excerpted from Wikipedia’s “ignimbrite” article, available under the CC BY-SA 4.0 licence.