Scanning electron microscope photo of glass shards in ash sample. Variety of shard types: pumiceous and chunky bubble-wall junction shards from the Putah Tuff (Member of the Tehama formation), 3.3 Ma. Source: Sonoma Volcanics, Calif.
Date: 2000
Volcano(es):
Photographer: Robert, Oscarson
URL: avo.alaska.edu/image/view/6345
Credit: Image courtesy of U.S. Geological Survey.
Use Restriction: Please cite the photographer and the U.S. Geological Survey when using this image.
Full Resolution.
Volcano(es):
Photographer: Robert, Oscarson
URL: avo.alaska.edu/image/view/6345
Credit: Image courtesy of U.S. Geological Survey.
Use Restriction: Please cite the photographer and the U.S. Geological Survey when using this image.
Full Resolution.
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