File:Hornblende andesite ash (18 August 1992 eruption of Mt. Spurr's Crater Peak Vent, Aleutian Volcanic Arc, southern Alaska, USA).jpg
Original file (3,072 × 2,016 pixels, file size: 2.27 MB, MIME type: image/jpeg)
Captions
Captions
Summary[edit]
.jpg&action=edit§ion=1){kind=link}
| Description |
English: Hornblende andesite volcanic ash (field of view ~5.1 centimeters across) - on 18 August 1992, Mt. Spurr, had a 3.5-hour long, subplinian ash eruption. Ash coated the city of Anchorage. The eruption came from the Crater Peak Vent, a satellite eruptive center. Crater Peak Vent is a basaltic-andesitic cone located just south of Mt. Spurr’s summit.
Several Aleutian Arc volcanoes periodically threaten cities and towns in the Anchorage area of southern Alaska, USA. The Aleutian Volcanic Arc consists of dozens of volcanoes, all formed by subduction of the Pacific Plate beneath the North American Plate. Mt. Spurr, in the northeastern Aleutian Volcanic Arc, is a 10-20,000 year old andesitic, subduction zone stratovolcano that formed after the collapse of a Late Pleistocene volcano (“ancestral Spurr Volcano”). Spurr Volcano had ash eruptions in 1953 and 1992. For additional information on the 1953 and 1992 eruptions, see: Wilcox (1953) - Preliminary Report of the Eruption of Mount Spurr Volcano, Alaska, July 9, 1953, and the Ashfall in the Anchorage Area. 25 pp. Keith (1995) - The 1992 eruptions of Crater Peak Vent, Mount Spurr Volcano, Alaska. U.S. Geological Survey Bulletin 2139. 223 pp. |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/15013198006/ |
| Author | James St. John |
Licensing[edit]
.jpg&action=edit§ion=2){kind=link}
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
|
This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/15013198006. It was reviewed on 19 June 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:32, 19 June 2022 | | 3,072 × 2,016 (2.27 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/15013198006/ with UploadWizard |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
.jpg&oldid=826894968){kind=link}