Figure 14.9
Bombs and blocks. (A) This volcanic bomb was found in the Pinacate Volcanic Field in northwestern Sonora, Mexico. Its typical streamlined shape is the result of airflow around it as it cooled in flight. (B) The flanks of Licancabur volcano, near the town of San Pedro de Atacama in central Chile, are littered with blocks that once made up the volcano, but were torn from it during an eruption.(A. © Peter L. Kresan; B. © Paul Harris/AWL Images/Getty Images)