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Photo glossary of volcano terms


Photograph by J. Lowenstern
 Ancient pillow lava
These pillow basalts were either erupted from a vent beneath water or flowed into water. The lava deposit was subsequently uplifted by tectonic activity.

 

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U.S. Department of the Interior, U.S. Geological Survey, Menlo Park, California, USA
URL http://volcanoes.usgs.gov/Products/Pglossary/ancientseq.html
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Last modification: Monday, 04-Sep-2000 22:27:33 EDT (SRB)