Slump (geology)

[4] The upper surface of the blocks are rotated backwards, forming depressions which may accumulate water to create ponds or swampy areas.

Addition of water and loss of sediment cohesion at the toe may transform slumping material into an earthflow.

Slumps frequently form due to removal of a slope base, either from natural or manmade processes.

Slumps may also occur underwater along the margins of continents and islands, resulting from tidal action or a large seismic event.

The underwater terrain which encompasses the Hawaiian Islands gains its unusual hummocky topography from the many slumps that have taken place for millions of years.

One of the largest known slumps occurred on the south-eastern edge of the Agulhas Bank south of Africa in the Pliocene or more recently.

It is a composite slump with proximal and distal allochthonous sediment masses separated by a large glide plane scar.

The slump that destroyed Thistle, Utah , by creating an earthen dam that flooded the area
Bentonite Clay along the valley of the Little Missouri River in Theodore Roosevelt National Park (North Unit)
The tilted mounds in slump formations formed when the streams that cut into the cliffs over-steepened them. Heavy Moisture led to land slides of blocks of overhanging earth. Thus the slumps retained their original layering sequence