Volcanic ash, SEM

Volcanic ash, SEM

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Caption: Coloured scanning electron micrograph (SEM) of ash from Alaska, USA. Volcanic ash consists of rock, minerals and volcanic glass fragments. It is created during explosive eruptions by the shattering of large rocks and the separation of molten rock into tiny pieces. Magnification: 10,670x @ 10um wide.

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Keywords: alaskan geology, ash, coloured, earth science, geology, geothermal, mineral, rock, scanning electron micrograph, scanning electron microscope, science, seismic activity, sem, stratovolcano, tectonic activity, volcanic ash, volcano rocks, volcanology

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