sentences:  These paleomagnetic results corroborated previous studies suggesting that north Africa did not shift in latitude from 210 to 110 million years ago and extended this period to 85 million years.Nubian Sandstone was deposited under a tropical to subtropical climate and formed under a variety of continental conditions, including eolian merging intermittently into shallow marine.The Nubian Sandstone complex has a thickness varying from under 500 m to over 3000 m, resting on the Precambrian basement.