Meidob Vulkanfeld
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NASA Space Shuttle image (http://eol.jsc.nasa.gov/)
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640 x 466 Pixel (38126 Bytes)
Popis:
The dark-colored area in the center of this Space Shuttle view is the alkaline Meidob volcanic field in western Sudan. This broad volcanic field covers an area of 5000 sq km with nearly 700 Pliocene-to-Holocene vents. The margins of the field are dominated by basaltic scoria cones and associated lava flows, but trachytic-phonolitic lava domes, tuff rings, and maars, concentrated along the central E-W-trending axis of the volcanic field, are among the youngest features. The latest dated eruptions took place about 5000 years ago.
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This file is in the public domain in the United States because it was created by the Image Science & Analysis Laboratory, of the NASA Johnson Space Center. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA media use guidelines or Conditions of Use of Astronaut Photographs).
Photo source: STS073-713-87.
Licence:
Public domain
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