Encyclopedia > Volcanic ash

Article Content

Volcanic ash

Volcanic ash is low-density solidified rocky material ejected from a volcanic vent into the air.

Volcanic ash looks similar to the ash resulting from the combustion of wood, but it is not a product of combustion. When the volcanic ash rains down to the ground, it forms a layer of tuff.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Shoreham, New York

... them, 74.5% are married couples living together, 8.3% have a female householder with no husband present, and 13.1% are non-families. 11.0% of all households are made up of ...