File:Pahoehoe Lava, Thomas A. Jaggar Museum, Hawaiʻi Volcanoes National Park, Hawaii (4528745573).jpg
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Summary[edit]
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| Description |
Pāhoehoe is basaltic lava that has a smooth, billowy, undulating, or ropy surface. These surface features are due to the movement of very fluid lava under a congealing surface crust. The Hawaiian word was introduced as a technical term in geology by Clarence Dutton. A pāhoehoe flow typically advances as a series of small lobes and toes that continually break out from a cooled crust. It also forms lava tubes where the minimal heat loss maintains low viscosity. The surface texture of pāhoehoe flows varies widely, displaying all kinds of bizarre shapes often referred to as lava sculpture. With increasing distance from the source, pāhoehoe flows may change into ʻaʻā flows in response to heat loss and consequent increase in viscosity. Pahoehoe lavas typically have a temperature of 1100 to 1200 °C. The rounded texture makes pāhoehoe a poor radar reflector, and is difficult to see from an orbiting satellite (dark on Magellan picture). en.wikipedia.org/wiki/Lava#P.C4.81hoehoe en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_... |
| Date | |
| Source | Pahoehoe Lava, Thomas A. Jaggar Museum, Hawaiʻi Volcanoes National Park, Hawaii |
| Author | Ken Lund from Reno, Nevada, USA |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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- 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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This image was originally posted to Flickr by Ken Lund at https://flickr.com/photos/75683070@N00/4528745573. It was reviewed on 9 January 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 03:41, 9 January 2017 | | 2,816 × 2,112 (1.95 MB) | Holly Cheng (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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