Weird Places: Mauritania's Eye of the Sahara

Explore the origins of one of the coolest geologic formations in the world, West Africa's Richat Structure.

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Sources:
http://www.amusingplanet.com/2012/05/richat-structure-eye-of-sahara.html
http://www.lpi.usra.edu/publications/slidesets/geology/sgeo/slide_13.html
http://apod.nasa.gov/apod/ap130519.html
http://www.livescience.com/29906-eye-of-africa-peers-up-from-the-sand.html
http://bibvir.uqac.ca/theses/030084214/030084214.pdf
http://daac.gsfc.nasa.gov/geomorphology/GEO_2/GEO_PLATE_T-31.shtml
http://geology.gsapubs.org/content/33/8/665.short
http://articles.adsabs.harvard.edu/full/2001M%26PSA..36R.125M