File:Tibesti Range, Chad (ASTER).jpg
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Size of this preview: 634 × 600 pixels. Other resolutions: 254 × 240 pixels | 507 × 480 pixels | 812 × 768 pixels | 1,082 × 1,024 pixels | 2,165 × 2,048 pixels | 3,598 × 3,404 pixels.
Original file (3,598 × 3,404 pixels, file size: 3.75 MB, MIME type: image/jpeg)
Captions
Captions
Shown here are deeply incised canyons on the southwest slope of the Yega Volcano located in the southwest part of the Tibesti Volcanic Range, in northern Chad.
Summary
[edit]| Description |
English: Shown here are deeply incised canyons on the southwest slope of the Yega Volcano located in the southwest part of the Tibesti Volcanic Range, in northern Chad. Characteristic steep-walled theater-headed canyons form as overlying relatively soft Tarso Voon ignimbrites are stripped back over more resistant basement schists, through the action of groundwater seepage and surface runoff during infrequent storms, or during previous eras of wetter climate. Such differential erodability very likely also played a part in the formation of ancient complex ramified canyon networks on Mars of similar scale and appearance, and may reflect the former presence of more abundant supplies of near-surface water during warmer periods on Mars in its distant past. The ASTER image was acquired on 12 Jan 2003, covers an area of 51 x 54 km, and is centered near 20.3 degrees north latitude, 17.1 degrees east longitude. |
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| Date | Taken on 12 January 2003 | ||
| Source |
Tibesti Range, Chad (direct link)
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| Author | NASA/METI/AIST/Japan Space Systems, and U.S./Japan ASTER Science Team |
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| Object location |  | View this and other nearby images on: OpenStreetMap |  |
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This media is a product of the Terra mission Credit and attribution belongs to the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) team, NASA/METI/AIST/Japan Space Systems |
Licensing
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 19:17, 7 May 2023 | | 3,598 × 3,404 (3.75 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://asterweb.jpl.nasa.gov/gallery/images/tibesti.jpg via Commons:Spacemedia |
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