File:Volcanic ash.jpg
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Volcanic ash collected in Randle, Washington, located about 40 km NNE of Mount St. Helens. The north edge of the eruption cloud of May 18, 1980, passed over Randle and deposited between 1 and 2 cm of ash on the community. At the same distance along the axis of the eruption cloud, however, about 7 cm of ash and larger-sized tepra fell to the ground.
Photo: SEM image of a single ash grain erupted by Mount St. Helens on May 18,1980
Public domain image from here:[1]
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:53, June 7, 2007 | | 350 × 219 (25 kilobytes) | SharonS (Talk | contribs) |
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