Millions of years have passed since the sediments on top of Member III were deposited and later uplifted (probably starting in Oligocene/Miocene) and exposed to weathering and erosion by wind, sand and water.
Let's look at the history of sediment deposition now. The limestone formations constituting the Sphinx and its surrounding enclosure are usually subdivided into three members (member, part of the formation), as shown in the diagram below.
The actual age of the Great Sphinx in Egypt is long under discussion. Some experts believe that an analysis of weathering and erosion can help fix a date, but does geological investigation and observation back up these theories? Jørn Christiansen does not think so.
An amazing discovery has been made by a Spanish-Italian archaeological team in Egypt – an ancient reproduction of the legendary Tomb of Osiris, the god of the dead in Egyptian mythology, was found in the necropolis of Sheikh Abd el-Qurna, on the West Bank at Thebes.