Fiamme

From Wikipedia, the free encyclopedia

Fiamme are fragments of hot volcanic ejecta, generally pumice, that have been deformed by compaction in a pyroclastic flow deposit. The name fiamme comes from the Italian word for flame.

Fiamme are formed from hot, relatively low viscosity, high porosity fragments of volcanic glass which have been erupted from a volcano. These fragments accumulate on the ground and flatten via compaction from subsequent deposits of hot volcanic ash layers. Fiamme are associated with pyroclastic flow deposits. The lithified product is a welded tuff.

[edit] See also

• Tuff and volcanic rock
• Agglomerate and ignimbrite
• List of rock textures
• Rock microstructure

[edit] External links

• Example image and explanation of fiamme structures