NORTH DAKOTA STATE UNIVERSITY - FARGO, N D
An earthflow represents the down-slope movement of water-saturated, clay-rich materials. Unlike a slump, little or no rotation of the mass is involved (many slumps, however, terminate in earthflows). Instead, the mass moves along a shear surface that generally parallels the slope surface. The base of the earthflow is usually a lobate landform.
This small earthflow is on the north side of N.D. Highway 46, just east of the Sheyenne River bridge. It was initiated in Cretaceous shales exposed in an oversteepened highway cut.