File:Intrusions air mountains nasa.jpg

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Intrusions_air_mountains_nasa.jpg ‎(400 × 372 pixels, file size: 95 KB, MIME type: image/jpeg)

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English: In Africa, Precambrian mountains often stand out in stark relief as topographic highs midst lowlands covered by sand. Such mountains are found in parts of the Sahara Desert. Here are the Aïr Mountains in Niger, consisting of peralkaline granite intrusions which appear dark (unusual since most granitic masses are light-toned in the field).
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Author NASA / Landsat

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Public domain 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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current19:02, 27 May 2008Thumbnail for version as of 19:02, 27 May 2008400 × 372 (95 KB)T L Miles (talk | contribs){{Information |Description=In Africa, Precambrian mountains often stand out in stark relief as topographic highs midst lowlands covered by sand. Such mountains are found in parts of the Sahara Desert. Here are the Air Mountains in Niger, consisting of per

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