File:Caldera Demonstration Model webmd.webm
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Caldera_Demonstration_Model_webmd.webm (WebM audio/video file, VP8/Vorbis, length 2 min 12 s, 640 × 360 pixels, 310 kbps overall, file size: 4.89 MB)
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Summary
| Description |
English: A caldera is a large, usually circular volcanic depression formed when magma is withdrawn or erupted from a shallow underground magma reservoir. It is often difficult to visualize how calderas form. This simple experiment using flour, a balloon, tubing, and a bicycle pump, provides a helpful visualization for caldera formation. |
| Date | |
| Source | http://gallery.usgs.gov/videos/333 |
| Author | U.S. Geological Survey |
Licensing
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This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:56, 5 May 2015 | 2 min 12 s, 640 × 360 (4.89 MB) | AmmarBanafea | User created page with UploadWizard |
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