1. Education

Pyroclastic Texture

Igneous Rock Textures

By

Rocks with pyroclastic ("PY-ro-CLAS-tic") texture are made of pieces of volcanic material created in an explosive eruption, like this welded tuff.
Volcanic bits and pieces
Photo (c) 2006 Andrew Alden, licensed to About.com (fair use policy)
Top Related Searches

©2014 About.com. All rights reserved.