Bechar Basin, Algeria - related image preview

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Bechar Basin, Algeria - related image preview

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Bechar Basin, Algeria - related image preview


Bechar Basin, Algeria

The Béchar Basin of northwest Algeria formed as layers of sedimentary rocks from the Paleozoic Era (250-540 million years ago) folded and cracked during collisions of Africa and Europe during the Tertiary Period (2-65 million years ago). In this photograph of part of the basin captured by astronauts, dark brown to tan folded ridges of these Paleozoic sedimentary layers extend across the image from top to bottom.

Featured astronaut photograph ISS015-E-15323 was acquired June 27, 2007, by the Expedition 15 crew with a Kodak 760C digital camera using a 70 mm lens. The image is provided by the ISS Crew Earth Observations experiment and the Image Science & Analysis Laboratory, Johnson Space Center. The image in this article has been cropped and enhanced to improve contrast. The International Space Station Program supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth.

Published August 6, 2007
Data acquired June 27, 2007

ISS > Digital Camera
Astronaut Photography