Category:Volcanic ash

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A micrograph of volcanic ash in the Lassen volcanic area in Northern California - Image by The U.S. Geological Survey (USGS)

Bits of pulverized rock and glass created by volcanic eruptions

Media in category "Volcanic ash"

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Volcanic Ash USGS Micrograph of Rockland Ash.jpg 200 × 120; 13 KB

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Volcanoes