All articles tagged with #eye of the sahara
NASA’s Earth Observatory reveals, via Landsat 9 and Landsat 8 imagery, that Mauritania's Richat Structure—the Eye of the Sahara—is not an impact crater but a giant, multi-layered dome formed by an ancient igneous intrusion uplifted during the Cretaceous and sculpted by differential erosion, producing the concentric rings visible from space and offering insights into Earth's tectonic and erosional history.
NASA’s Eye of the Sahara, the Richat Structure in Mauritania, is a 40-km-wide circular geologic dome formed by an igneous intrusion and differential erosion, not an impact crater. A Landsat 8/9 mosaic highlights concentric ridges (cuestas) and the orange-gray color differences that reflect diverse rock types, set on the Adrar Plateau amid wind-sculpted dunes and ancient river channels. First described in the 1930s and popularized after early spaceflight imagery, the feature’s striking “bull’s-eye” shape is a striking example of how geological forces shape the landscape.
The Eye of the Sahara, also known as the Richat Structure, is a massive, concentric rock formation in Mauritania visible from space. Initially thought to be a meteor impact site, it was later found to be shaped by tectonic uplift and erosion. The structure, which spans 25 to 31 miles in diameter, holds geological and archaeological significance, revealing ancient human tools and various rock types. Despite myths linking it to Atlantis, scientific evidence debunks such claims.