Fig. 15.
Examples of fractures from other ignimbrites: a, b the Acatlán ignimbrite (Central Mexico, photographs courtesy of M. Branney), c a La Pacana Caldera ignimbrite, and d block and ash flow deposit from Tumisa volcano, northern Chile
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.