surname, attested from late 12c., probably meaning bald head; cf. Wyclif Stye up, ballard, where Coverdale translates Come vp here thou balde heade [2 Kg.2:23-24, where God kills 42 children for making fun of Elijah's lack of hair.]
A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or rock layers moves a short distance down a slope. Movement is characterized by sliding along a concave-upward or planar surface. Comments.
WASTING: SLUMP. In the Fargo-Moorhead region, three types of mass wasting impact slopes bordering the Red River and its tributaries. Two of these, creep and earthflow, generally induce low levels of property damage. Slump, in contrast, can result in major and rapid slope retreat. Slump is common where clay-rich materials are exposed along a steep slope. Such oversteepend slopes naturally occur on the outside of meanders along the Red River.