File:Breadcrust bomb near Novarupta, Valley of Ten Thousand Smokes, Memorial Day Weekend 2010 079 (13542972664).jpg
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| Description |
According to the USGS, "A breadcrust bomb is a volcanic bomb with a cracked and checkered surface, sometimes resembling the surface of a loaf of bread. The cracks develop when the outer surface of a partially molten lava fragment cools to form a brittle surface and then subsequently cracks as the hot interior expands due to the continued growth of gas bubbles." This bomb has been broken by frost wedging. NPS photo by M. Fitz. |
| Date | |
| Source | Breadcrust bomb near Novarupta, Valley of Ten Thousand Smokes, Memorial Day Weekend 2010 079 |
| Author | Katmai National Park and Preserve |
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This image was originally posted to Flickr by KatmaiNPS at https://flickr.com/photos/99350217@N03/13542972664. It was reviewed on 16 November 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
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This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 22:06, 16 November 2015 | | 3,648 × 2,736 (3.32 MB) | Holly Cheng (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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