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A rotational slump occurs when a slump block, composed of sediment or rock, slides along a concave-upward slip surface with rotation about an axis parallel to the slope. [3] Rotational movement causes the original surface of the block to become less steep, and the top of the slump is rotated backward.
Tilted block faulting, also called rotational block faulting, is a mode of structural evolution in extensional tectonic events, a result of tectonic plates stretching apart. [ 1 ] [ 2 ] When the upper lithospheric crust experiences extensional pressures, the brittle crust fractures, creating detachment faults . [ 3 ]
It can also be significant in coastal areas when sea level falls after a storm tide, or when the water level of a reservoir or even a natural lake rapidly falls. The most famous example of this is the Vajont failure, when a rapid decline in lake level contributed to the occurrence of a landslide that killed over 2000 people.
Animation of a landslide in San Mateo County, California Landslips Noire River (Rivière Noire), Saint-Alban landslide 1894, Quebec, Canada [1] [2] Landslides , also known as landslips , skyfalls or rockslides , [ 3 ] [ 4 ] [ 5 ] are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls , mudflows ...
Mass wasting, also known as mass movement, [1] is a general term for the movement of rock or soil down slopes under the force of gravity. It differs from other processes of erosion in that the debris transported by mass wasting is not entrained in a moving medium, such as water, wind, or ice.
In the past decades, this observation led to the attraction of theoretical studies towards near-field effects of the earthquake rotational loading on the structural response. [5] The results of these studies implied that the rotational components may result in significant damage of structures sensitive to high-frequency excitations, and, hence ...
2 Caused by M 7.5 earthquake, the landslide caused a megatsunami with a run-up of 524 metres (1,719 ft) in Lituya Bay. [90] 17 Aug 1959 Madison Canyon, southwestern Montana, United States 1959 Hebgen Lake earthquake: 38 MCM 28–36 Caused by M 7.2 to 7.5 earthquake. Dammed the Madison River, creating Quake Lake. [91] 22 May 1960 Riñihue Lake ...
A river bank can be divided into three zones: Toe zone, bank zone, and overbank area. The toe zone is the area which is most susceptible to erosion. [2] Because it is located in between the ordinary water level and the low water level, it is strongly affected by currents and erosional events. [2]