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The Richat Structure is a deeply eroded, slightly elliptical dome with a diameter of 40 kilometres (25 mi). The sedimentary rock exposed in this dome ranges in age from Late Proterozoic within the center of the dome to Ordovician sandstone around its edges.
Richat Structure, Mauritania The Richat Structure in Mauritania has also been proposed as the site of Atlantis. [ 56 ] This structure is generally considered to be a deeply eroded domal structure that overlies a still-buried alkaline igneous intrusion . [ 57 ]
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The Richat Structure in the Sahara Desert of Mauritania. Once considered to be an impact structure, it is now classified as a geologic dome uplifted by an underlying igneous intrusion. Structural dome on Baffin Island, seen in a planation surface. Oblique aerial photo of Upheaval Dome, Utah.
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To the east beyond Ouadane is the distinctive Richat Structure, an uplifted and then heavily eroded dome of strata approximately 40 km across and whose concentric rings resemble an impact crater when observed from space. The Adrar region is home to a small human population, centered on the town of Atar.
Richat Structure by Shuttle Radar Topography Mission (SRTM). Instead of being a meteorite impact, the landform is more likely to be a collapsed dome fold structure.. Remote sensing is used in the geological sciences as a data acquisition method complementary to field observation, because it allows mapping of geological characteristics of regions without physical contact with the areas being ...
The Richat Structure in Mauritania is not an impact crater, but rather a eroded anticline. It is 50km across, and shown in here in a topographic reconstruction (scaled 6:1 on the vertical axis) from sattelite photos. False coloring as follows: bedrock=brown, sand=yellow/white, vegetation=green, salty sediments=blue