File:Volcanic ash (April 2009 eruption of Mt. Redoubt, Aleutian Volcanic Arc, Alaska, USA).jpg
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| Description |
English: Alaska's Aleutian Volcanic Arc consists of dozens of volcanoes, all formed by subduction of the Pacific Plate beneath the North American Plate. This volcanic ash sample is from Mt. Redoubt, a ~900,000 year old andesitic-dacitic-basaltic stratovolcano. Redoubt had an explosive ash eruption in April 2009. The tephra is composed of pulverized porphyritic andesite. This sample is from a distal airfall ash deposit.
Locality of source volcano: Mt. Redoubt, far-northeastern Aleutian Range, western side of the Cook Inlet, Lake Clark National Park, Kenai B-8 1:63,360 USGS topographic quadrangle, ~105 miles southwest of the city of Anchorage, southern Alaska, USA (60° 29’ 07" North latitude, 152° 44' 39" West longitude) Provenance: collected at the town of Anchor Point, Alaska (~92 kilometers south-southeast of Mt. Redoubt) See info. at: en.wikipedia.org/wiki/Mount_Redoubt and en.wikipedia.org/wiki/2009_Mount_Redoubt_eruptive_activity |
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| Source | https://www.flickr.com/photos/47445767@N05/51016956468/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/51016956468. It was reviewed on 11 March 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:12, 11 March 2021 | | 3,281 × 2,683 (6.11 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51016956468/ with UploadWizard |
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