Eyes of the desert: as it appeared?

The desert has eyes! At least one. And that's what we lead today. The eye of Sahara or richat structure is a geological formation in the Mauritanian part of the Sahara desert. Formation is a series of concentric rings and reaches a diameter of about 50 kilometers.

About how and why a structure richat, there have been many theories. Some of them affected (and affect still) the realm of fantasy. With the scientific position of the Eyes of the Desert was considered to be an ancient meteor crater. However, this theory does not explain the flat and smooth bottom formation. According to the most reliable and the most widespread version, the richat structure formed overlying dome-shaped rocks. Over time, under the influence of erosion, they were "cut off", forming on the surface of concentric rings.

The age of the sedimentary rocks of the "older" rings, located in the center, about 2.5 billion years. Age "youngster", forming the last lap is 480 million years old.

Look at the picture of the richat structure: the eye can see, watching the space from the surface of the Earth?

Translated by «Yandex.Translator»