This prominent circular feature, known as the Richat Structure, in the Sahara desert of Mauritania is often noted by astronauts because it forms a conspicuous 50-kilometer-wide (30-mile-wide) bull’s-eye on the otherwise rather featureless expanse of the desert. Initially mistaken for a possible impact crater, it is now known to be an eroded circular anticline (structural dome) of layered sedimentary rocks. It has since captured some of the weirdest and unsolved mysteries of the world. Extensive sand dunes occur in this region and the interaction of bedrock topography, wind, and moving sand is evident in this scene. During my recent exploration of the Richat Structure I was looking for megaliths. That peak captures some sand on its windward side, but mostly deflects the wind and sand around its sides, creating a sand-barren streak that continues far downwind. Also known as the Eye of the Sahara, the structure measures 40 kilometers (roughly 25 miles) in diameter. large dome of molten rock uplifting and shaped by the forces of water and wind. NASA Satellite Captures Image of Meteor Over the Bering Sea, Manicouagan Crater – The Earth’s Largest Impact Crater Visible from Space, Review | The Selected Letters of Cassiodorus: A Sixth-Century Sourcebook. Note especially how the dune field ends abruptly short of the cliffs at the far right as wind from the northeast (lower right) apparently funnels around the cliff point, sweeping clean areas near the base of the cliff. Other sources mention a large island in the Atlantic Ocean, at some … This prominent circular feature in the Sahara desert of Mauritania has attracted attention since the earliest space missions because it forms a conspicuous bull's-eye in the otherwise rather featureless expanse of the desert. The Richat Structure in central Mauritania is a stunning geological structure 50 kilometres across (Wikipedia entry).Once thought to be an impact crater, it is actually a sedimentary formation that has eroded flat over many eons. The image shows the Adrar plateau on the left side with darker sedimentary rocks. Study Finds Staggering Decline in Marine Fishery Biomass, Three of Colorado’s Wildfires are the Largest in Recorded History for the State, Rapid Growth Shortens Trees’ Lifespans – and Adds to the Climate Crisis. Check out photos of my other 3D prints. Land. Sand Dunes, Marzuq Sand Sea, Southwest Libya, NASA Goddard Space Differential erosion of resistant layers of quartzite has created high-relief circular cuestas. This structure is a deeply eroded, slightly elliptical, 40 km in diameter dome. The Richat Structure. So both the Richat Structure and Souss Massa might have been washed over by a tsunami and nuclear war – which could have altered some of Plato’s clues, for example the distance to the ocean. by the Advanced Visible and Near Infrared Radiometer on Japan’s ALOS satellite. Some shading of the elevation model was included to further highlight the topographic features. This view was generated from a Landsat satellite image draped over an elevation model produced by the Shuttle Radar Topography Mission (SRTM). The view uses a 6-times vertical exaggeration to greatly enhance topographic expression. The magnificence of this natural phenomenon was captured on November 23, 2010 by the Advanced Visible and Near Infrared Radiometer on Japan’s ALOS satellite. The sedimentary rocks comprising this structure dip outward at 10°–20°. The image shows the Adrar plateau on the left side with darker sedimentary rocks. Tuesday, 19th July 2005 by Alex Turnbull. Despite the dry and inhospitable look of this region of the Sahara Desert the southern part of the Richat Structure shows the presence of vegetation in the form of trees and bushes as well as temporary lakes; a result of the rainy season that occurred a few weeks before the picture was captured. It was originally though to have been caused by a meteor strike, but scientists now believe it was formed by a large dome of molten rock uplifting and shaped by the forces of water and wind. The Richat structure is indeed ringed by mountains to the north. Despite the dry and inhospitable look of this region of the Sahara Desert the southern part of the Richat Structure shows the presence of vegetation in the form of trees and bushes as well as temporary lakes; a result of the rainy season that occurred a few weeks before the picture was captured. The Richat Structure, also known as the Eye of the Sahara and Guelb er Richat, is a prominent circular feature in the Sahara desert near Ouadane, west–central Mauritania. Also known as the Eye of the Sahara, the structure measures 40 kilometers (roughly 25 miles) in diameter. Flight Center. Human Presence. The Richat Structure, a geologic wonder viewable from space, is a striking circular feature found in the Sahara Desert in Mauritania. A fracking-fueled demand for round and durable sand has triggered a mining boom in the western part of the state. Many people believe it is also the site of Atlantis. The Richat Structure, also known as the Eye of the Sahara and Guelb er Richat, is a prominent circular feature in the Sahara near Ouadane, west–central Mauritania. Note also the small isolated peak within the dune field. Latitude: 21° 07' 17.80" NLongitude: -11° 24' 7.77" W, Satellite map of Richat Structure in Google Maps. Because of its’ circular formation, it is also known as the “Eye of Africa” and the “Eye of the Sahara”. The Richat Structure is a fascinating, circular area located in the Sahara’s Adrar Plateau in Mauritania. Layers of dunes march across a sand sea in the east-central Tenéré Desert of Niger in this astronaut photo from December 1, 2009. Image of the Day There is no positive evidence to directly tie the two together or of an ancient civilisation in the Richat, but it is in the right place, matches the geography of Plato’s Atlantis, and … This prominent circular feature, known as the Richat Structure, in the Sahara desert of Mauritania is often noted by astronauts because it forms a conspicuous 50-kilometer-wide (30-mile-wide) bull’s-eye on the otherwise rather featureless expanse of the desert. Described by some as looking like an outsized fossil in the desert, the structure has a diameter of almost 30 miles. Namibia’s sea of sand is bounded on its northern side by the impermanent Kuiseb River. resistant quartzite rocks which form the ridges. The Richat Structure, a geologic wonder viewable from space, is a striking circular feature found in the Sahara Desert in Mauritania. Interactive 3D View If you would like a custom relief map, contact me through my website or through Shapeways. Google Maps was created in 2005 to open up the world to people from their computer.. The Richat Structure, also known as the Eye of the Sahara and Guelb er Richat, is a prominent circular feature in the Sahara desert near Ouadane, west–central Mauritania.This structure is a deeply eroded, slightly elliptical, 40 km in diameter dome. Image of the Day In the video, mention is made of geologic surveys which show that the mountains to the north of the Eye of the Sahara had waterfalls falling from them when the Sahara desert was not yet a desert, which would be fairly noteworthy. For vertical scale, note that the height of the mesa ridge in the back center of the view is about 285 meters (about 935 feet) tall. Caitlin Dempsey | October 10, 2019May 6, 2014 | Physical Geography. The Richat structure in Mauritania is the closest known match to Plato’s description of Atlantis. 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. The lower portion of the images shows the erg (sand dunes). Land Sedimentary rock is found between the ridges. The lower portion of the images shows the erg (sand dunes). Sedimentary rock is found between the ridges. This astronaut photograph shows classic large and small sand masses of the central Sahara Desert, where wind is a more powerful land-shaping agent than water. Image of the Day Land. A geologic dome, the Richat Structure has concentric bands of resistant quartzite rocks which form the ridges. Colors of the scene were enhanced by use of a combination of visible and infrared bands, which helps to differentiate bedrock (browns), sand (yellow, some white), minor vegetation in drainage channels (green), and salty sediments (bluish whites). Explore Richat Structure in Mauritania as it appears on Google Maps and Bing Maps as well as pictures, stories and other notable nearby locations on VirtualGlobetrotting.com.

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