- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
A physiographic discussion of the Nile River and its course in Anglo-Egyptian Sudan. The low-lying physiographic features of the area are associated with lower Tertiary "lake beds." Very little vertical river erosion below the level of the lake beds has teken place.