Amazing structures in this aftermath image of the #PyroclasticFlow of the 1991 Mt. Pinatubo eruption - an almost perfect reverse inspiration/reference for a #GenerativeDesign project I did in 2012 (second image)
Photo credits: Chris Newhall, U.S. Geological Survey
https://en.wikipedia.org/wiki/File:Pinatubo_-_pyroclastic_fall.jpg
An ignimbrite is a rock formed from hot pyroclastic flows. The groundmass is primarily flattened glass shards from pumice that are pulverized during eruption. Ignimbrites can contain flattened lens-shaped clasts, called fiamme (Italian for flame) of other material, usually pumice. Ignimbrites can have a variety of colors and clast materials and sizes. They are beautiful, but you wouldn’t want to be too close as they are being formed! See more at the link below!
Sand Atlas Ignimbrite: https://www.sandatlas.org/ignimbrite/